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href="https://developers-cloudflare-com.translate.goog/kv/api/list-keys/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#_top" class="astro-g2bywc46" style="--depth: 0;"> <span class="astro-g2bywc46" style="--depth: 0;">Overview</span> </a></li> <li class="astro-g2bywc46" style="--depth: 0;"><a href="https://developers-cloudflare-com.translate.goog/kv/api/list-keys/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#reference" class="astro-g2bywc46" style="--depth: 0;"> <span class="astro-g2bywc46" style="--depth: 0;">Reference</span> </a> <ul class="isMobile astro-g2bywc46" style="--depth: 1;"> <li class="astro-g2bywc46" style="--depth: 1;"><a href="https://developers-cloudflare-com.translate.goog/kv/api/list-keys/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#list-method" class="astro-g2bywc46" style="--depth: 1;"> <span class="astro-g2bywc46" style="--depth: 1;">list() method</span> </a></li> </ul></li> <li class="astro-g2bywc46" style="--depth: 0;"><a href="https://developers-cloudflare-com.translate.goog/kv/api/list-keys/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#guidance" class="astro-g2bywc46" style="--depth: 0;"> <span class="astro-g2bywc46" style="--depth: 0;">Guidance</span> </a> <ul class="isMobile astro-g2bywc46" style="--depth: 1;"> <li class="astro-g2bywc46" style="--depth: 1;"><a href="https://developers-cloudflare-com.translate.goog/kv/api/list-keys/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#list-by-prefix" class="astro-g2bywc46" style="--depth: 1;"> <span class="astro-g2bywc46" style="--depth: 1;">List by prefix</span> </a></li> <li class="astro-g2bywc46" style="--depth: 1;"><a href="https://developers-cloudflare-com.translate.goog/kv/api/list-keys/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#ordering" class="astro-g2bywc46" style="--depth: 1;"> <span class="astro-g2bywc46" style="--depth: 1;">Ordering</span> </a></li> <li class="astro-g2bywc46" style="--depth: 1;"><a href="https://developers-cloudflare-com.translate.goog/kv/api/list-keys/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#pagination" class="astro-g2bywc46" style="--depth: 1;"> <span class="astro-g2bywc46" style="--depth: 1;">Pagination</span> </a></li> <li class="astro-g2bywc46" style="--depth: 1;"><a href="https://developers-cloudflare-com.translate.goog/kv/api/list-keys/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#optimizing-storage-with-metadata-for-list-operations" class="astro-g2bywc46" style="--depth: 1;"> <span class="astro-g2bywc46" style="--depth: 1;">Optimizing storage with metadata for list() operations</span> </a></li> </ul></li> <li class="astro-g2bywc46" style="--depth: 0;"><a href="https://developers-cloudflare-com.translate.goog/kv/api/list-keys/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#other-methods-to-access-kv" class="astro-g2bywc46" style="--depth: 0;"> <span class="astro-g2bywc46" style="--depth: 0;">Other methods to access KV</span> </a></li> </ul> </div> </details> </nav> </mobile-starlight-toc> <script type="module" src="/_astro/MobileTableOfContents.astro_astro_type_script_index_0_lang.C181hMzK.js"></script> </div> <div class="right-sidebar-panel sl-hidden lg:sl-block astro-pb3aqygn"> <div class="sl-container astro-pb3aqygn"> <starlight-toc data-min-h="2" data-max-h="3"> <nav aria-labelledby="starlight__on-this-page"> <h2 id="starlight__on-this-page">On this page</h2> <ul class="astro-g2bywc46" style="--depth: 0;"> <li class="astro-g2bywc46" style="--depth: 0;"><a href="https://developers-cloudflare-com.translate.goog/kv/api/list-keys/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#_top" class="astro-g2bywc46" style="--depth: 0;"> <span class="astro-g2bywc46" style="--depth: 0;">Overview</span> </a></li> <li class="astro-g2bywc46" style="--depth: 0;"><a href="https://developers-cloudflare-com.translate.goog/kv/api/list-keys/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#reference" class="astro-g2bywc46" style="--depth: 0;"> <span class="astro-g2bywc46" style="--depth: 0;">Reference</span> </a> <ul class="astro-g2bywc46" style="--depth: 1;"> <li class="astro-g2bywc46" style="--depth: 1;"><a href="https://developers-cloudflare-com.translate.goog/kv/api/list-keys/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#list-method" class="astro-g2bywc46" style="--depth: 1;"> <span class="astro-g2bywc46" style="--depth: 1;">list() method</span> </a></li> </ul></li> <li class="astro-g2bywc46" style="--depth: 0;"><a href="https://developers-cloudflare-com.translate.goog/kv/api/list-keys/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#guidance" class="astro-g2bywc46" style="--depth: 0;"> <span class="astro-g2bywc46" style="--depth: 0;">Guidance</span> </a> <ul class="astro-g2bywc46" style="--depth: 1;"> <li class="astro-g2bywc46" style="--depth: 1;"><a href="https://developers-cloudflare-com.translate.goog/kv/api/list-keys/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#list-by-prefix" class="astro-g2bywc46" style="--depth: 1;"> <span class="astro-g2bywc46" style="--depth: 1;">List by prefix</span> </a></li> <li class="astro-g2bywc46" style="--depth: 1;"><a href="https://developers-cloudflare-com.translate.goog/kv/api/list-keys/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#ordering" class="astro-g2bywc46" style="--depth: 1;"> <span class="astro-g2bywc46" style="--depth: 1;">Ordering</span> </a></li> <li class="astro-g2bywc46" style="--depth: 1;"><a href="https://developers-cloudflare-com.translate.goog/kv/api/list-keys/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#pagination" class="astro-g2bywc46" style="--depth: 1;"> <span class="astro-g2bywc46" style="--depth: 1;">Pagination</span> </a></li> <li class="astro-g2bywc46" style="--depth: 1;"><a href="https://developers-cloudflare-com.translate.goog/kv/api/list-keys/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#optimizing-storage-with-metadata-for-list-operations" class="astro-g2bywc46" style="--depth: 1;"> <span class="astro-g2bywc46" style="--depth: 1;">Optimizing storage with metadata for list() operations</span> </a></li> </ul></li> <li class="astro-g2bywc46" style="--depth: 0;"><a href="https://developers-cloudflare-com.translate.goog/kv/api/list-keys/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#other-methods-to-access-kv" class="astro-g2bywc46" style="--depth: 0;"> <span class="astro-g2bywc46" style="--depth: 0;">Other methods to access KV</span> </a></li> </ul> </nav> </starlight-toc> <script type="module" src="/_astro/TableOfContents.astro_astro_type_script_index_0_lang.CKWWgpjV.js"></script><br><feedback-prompt class="not-content astro-x6kpz2mu"> <div id="feedback-thumbs" class="astro-x6kpz2mu"> <h2 class="astro-x6kpz2mu">Was this helpful?</h2> <div class="not-content astro-x6kpz2mu"> <svg width="1em" height="1em" viewbox="0 0 24 24" class="astro-x6kpz2mu" data-icon="material-symbols:thumb-up-outline-rounded"> <title>Yes</title><use 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href="https://developers-cloudflare-com.translate.goog/products/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB" class="c-breadcrumbs__link is-index"> Products </a> <span class="c-breadcrumbs__separator" aria-hidden="true"> <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewbox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="astro-couag5ji"> <polyline points="9 18 15 12 9 6" class="astro-couag5ji"></polyline> </svg></span></li> <li class="c-breadcrumbs__crumb has-ellipsis"><button type="button" aria-label="Show hidden navigation" class="c-breadcrumbs__truncated-button"> … </button> <span class="c-breadcrumbs__separator" aria-hidden="true"> </span></li> <li class="c-breadcrumbs__crumb"><a href="https://developers-cloudflare-com.translate.goog/kv/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB" class="c-breadcrumbs__link"> KV </a> <span class="c-breadcrumbs__separator" aria-hidden="true"> <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewbox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="astro-couag5ji"> <polyline points="9 18 15 12 9 6" class="astro-couag5ji"></polyline> </svg></span></li> <li class="c-breadcrumbs__crumb"><a href="https://developers-cloudflare-com.translate.goog/kv/api/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB" class="c-breadcrumbs__link"> Workers Binding API </a> <span class="c-breadcrumbs__separator" aria-hidden="true"> <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewbox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="astro-couag5ji"> <polyline points="9 18 15 12 9 6" class="astro-couag5ji"></polyline> </svg></span></li> <li class="c-breadcrumbs__crumb"><a href="https://developers-cloudflare-com.translate.goog/kv/api/list-keys/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB" class="c-breadcrumbs__link is-current" aria-current="location"> List keys </a></li> </ol> </nav> </astro-breadcrumbs> <script type="application/ld+json">{"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"/products/","name":"Products"}},{"@type":"ListItem","position":2,"item":{"@id":"/kv/","name":"KV"}},{"@type":"ListItem","position":3,"item":{"@id":"/kv/api/","name":"Workers Binding API"}},{"@type":"ListItem","position":4,"item":{"@id":"/kv/api/list-keys/","name":"List keys"}}]}</script> <script type="module">class t extends HTMLElement{constructor(){super(),this.isManualToggle=!1,this.breadcrumbs=null,this.mainBemClass=null,this.totalWidth=0,this.resizeObserver=null,this.handleTruncatedButtonClick=()=>{this.breadcrumbs?.classList.remove("is-truncated"),this.isManualToggle=!0},this.mainBemClass=this.dataset.mainBemClass||null;const e=this.dataset.id;!("truncated"in this.dataset)||!e||(this.breadcrumbs=document.getElementById(e),this.initializeCrumbs(),this.setupResizeObserver())}initializeCrumbs(){this.breadcrumbs?.querySelectorAll(`.${this.mainBemClass}__crumb`)?.forEach(s=>{this.totalWidth+=s.offsetWidth})}setupResizeObserver(){this.resizeObserver=new ResizeObserver(e=>{e.forEach(s=>{this.checkOverflow(s.target.clientWidth)})}),this.breadcrumbs&&this.resizeObserver.observe(this.breadcrumbs)}connectedCallback(){this.showHiddenCrumbs()}disconnectedCallback(){this.resizeObserver&&this.breadcrumbs&&(this.resizeObserver.unobserve(this.breadcrumbs),this.resizeObserver.disconnect())}toggleTruncated(e){this.breadcrumbs?.classList.toggle("is-truncated",e)}showHiddenCrumbs(){const e=this.breadcrumbs?.querySelector(`.${this.mainBemClass}__truncated-button`);e?.removeEventListener("click",this.handleTruncatedButtonClick),e?.addEventListener("click",this.handleTruncatedButtonClick.bind(this))}checkOverflow(e){const 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reduce)");t||n?this.#h():e.addEventListener("transitionend",this.#h,{once:!0})}#h=()=>{if(!this.#t)return;const{dialog:t,image:e}=this.#t;document.body.classList.remove(this.#e.transition),e.classList.remove(this.#e.source),t.parentElement?.remove(),document.body.style.overflow=this.#t.body.overflow,document.body.style.width=this.#t.body.width,document.querySelector("header")?.style.setProperty("padding-inline-end","var(--sl-nav-pad-x)"),this.#t=void 0,this.#o instanceof HTMLElement&&this.#o.focus()};#w(t,e){if(Object.hasOwn(this.dataset,"hideCaption")||(t=t?.trim()??"",t.length===0))return;const n=document.createElement("figcaption");n.ariaHidden="true",n.textContent=t,e.append(n)}#f(t){const e=t.getBoundingClientRect(),n=this.#y(t),i=n?window.innerWidth:t.naturalWidth,r=n?window.innerHeight:t.naturalHeight,d=Math.min(window.innerWidth,i),s=Math.min(window.innerHeight,r),l=Math.min(d/i,s/r),a=(n?window.innerWidth:t.naturalWidth)*l,c=(n?window.innerHeight:t.naturalHeight)*l,h=(window.innerHeight-c)/2,u=(window.innerWidth-a)/2,o=t.cloneNode(!0);o.removeAttribute("id"),o.style.position="absolute",o.style.width=`${a}px`,o.style.height=`${c}px`,o.style.top=`${h}px`,o.style.left=`${u}px`,o.style.transform="";const m=e.width/a,p=e.height/c,g=(-u+(e.width-a)/2+e.left)/m,v=(-h+(e.height-c)/2+e.top)/p;return o.style.transform=`scale(${m}, ${p}) translate3d(${g}px, ${v}px, 0)`,o.dataset[this.#r]=o.style.transform,t.parentElement?.tagName==="PICTURE"&&t.currentSrc&&(o.src=t.currentSrc),o}#y(t){return t.currentSrc.toLowerCase().endsWith(".svg")}});</script> <div class="sl-markdown-content astro-cedpceuv"> <p>To list all the keys in your KV namespace, call the <code dir="auto">list()</code> method of the <a href="https://developers-cloudflare-com.translate.goog/kv/concepts/kv-bindings/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB">KV binding</a> on any <a href="https://developers-cloudflare-com.translate.goog/kv/concepts/kv-namespaces/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB">KV namespace</a> you have bound to your Worker code:</p> <div class="expressive-code"> <link rel="stylesheet" href="/_astro/ec.jmw5e.css"> <script type="module" src="/_astro/ec.8zarh.js"></script> <figure class="frame not-content"> <figcaption class="header"></figcaption> <pre data-language="js"><code> <div class="ec-line"> <div class="code"> <span style="--0:#EEFFFF;--1:#00268F">env</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#EEFFFF;--1:#00268F">NAMESPACE</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">list</span><span style="--0:#EEFFFF;--1:#62676A">()</span><span style="--0:#89DDFF;--1:#007474">;</span> </div> </div></code></pre> <div class="copy"> <button title="Copy to clipboard" data-copied="Copied!" data-code="env.NAMESPACE.list();"> <div></div></button> </div> </figure> </div> <p>The <code dir="auto">list()</code> method returns a promise you can <code dir="auto">await</code> on to get the value.</p> <div tabindex="-1" class="heading-wrapper level-h4"> <h4 id="example">Example</h4><a class="anchor-link" href="https://developers-cloudflare-com.translate.goog/kv/api/list-keys/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#example"><span aria-hidden="true" class="anchor-icon"> <svg width="16" height="16" viewbox="0 0 24 24"> <path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z" /> </svg></span></a> </div> <p>An example of listing keys from within a Worker:</p> <div class="expressive-code"> <figure class="frame not-content"> <figcaption class="header"></figcaption> <pre data-language="js"><code> <div class="ec-line"> <div class="code"> <span style="--0:#EE9080;--1:#8F1500">export</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#EE9080;--1:#8F1500">default</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">{</span> </div> </div> <div class="ec-line"> <div class="code"> <span class="indent"> </span><span style="--0:#EE9080;--1:#8F1500">async</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#57C78F;--1:#00783C">fetch</span><span style="--0:#89DDFF;--1:#007474">(</span><span style="--0:#B59EE1;--1:#7C008F">request</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#B59EE1;--1:#7C008F">env</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#B59EE1;--1:#7C008F">ctx</span><span style="--0:#89DDFF;--1:#007474">)</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">{</span> </div> </div> <div class="ec-line"> <div class="code"> <span class="indent"> </span><span style="--0:#EE9080;--1:#8F1500">try</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">{</span> </div> </div> <div class="ec-line"> <div class="code"> <span class="indent"> </span><span style="--0:#EE9080;--1:#8F1500">const</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EEFFFF;--1:#00268F">value</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">=</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">await</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EEFFFF;--1:#00268F">env</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#EEFFFF;--1:#00268F">NAMESPACE</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">list</span><span style="--0:#EE9080;--1:#32008F">()</span><span style="--0:#89DDFF;--1:#007474">;</span> </div> </div> <div class="ec-line"> <div class="code"> </div> </div> <div class="ec-line"> <div class="code"> <span class="indent"> </span><span style="--0:#EE9080;--1:#8F1500">return</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#EE9080;--1:#8F1500">new</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#57C78F;--1:#00783C">Response</span><span style="--0:#EEFFFF;--1:#62676A">(</span><span style="--0:#EEFFFF;--1:#00268F">JSON</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">stringify</span><span style="--0:#EEFFFF;--1:#62676A">(</span><span style="--0:#EEFFFF;--1:#00268F">value</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#EEFFFF;--1:#00268F">keys</span><span style="--0:#EEFFFF;--1:#62676A">)</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">{</span> </div> </div> <div class="ec-line"> <div class="code"> <span class="indent"><span style="--0:#EEFFFF;--1:#62676A"> </span></span><span style="--0:#EEFFFF;--1:#62676A">status</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#B59EE1;--1:#7C008F">200</span> </div> </div> <div class="ec-line"> <div class="code"> <span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EEFFFF;--1:#62676A">)</span><span style="--0:#89DDFF;--1:#007474">;</span> </div> </div> <div class="ec-line"> <div class="code"> <span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">}</span> </div> </div> <div class="ec-line"> <div class="code"> <span class="indent"> </span><span style="--0:#EE9080;--1:#8F1500">catch</span><span style="--0:#EEFFFF;--1:#62676A"> (</span><span style="--0:#D5D7D8;--1:#8F1500">e</span><span style="--0:#EEFFFF;--1:#62676A">)</span> </div> </div> <div class="ec-line"> <div class="code"> <span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">{</span> </div> </div> <div class="ec-line"> <div class="code"> <span class="indent"> </span><span style="--0:#EE9080;--1:#8F1500">return</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#EE9080;--1:#8F1500">new</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#57C78F;--1:#00783C">Response</span><span style="--0:#EEFFFF;--1:#62676A">(</span><span style="--0:#EEFFFF;--1:#00268F">e</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#EEFFFF;--1:#00268F">message</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">{</span><span style="--0:#EEFFFF;--1:#62676A">status</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#B59EE1;--1:#7C008F">500</span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EEFFFF;--1:#62676A">)</span><span style="--0:#89DDFF;--1:#007474">;</span> </div> </div> <div class="ec-line"> <div class="code"> <span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">}</span> </div> </div> <div class="ec-line"> <div class="code"> <span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">},</span> </div> </div> <div class="ec-line"> <div class="code"> <span style="--0:#89DDFF;--1:#007474">};</span> </div> </div></code></pre> <div class="copy"> <button title="Copy to clipboard" data-copied="Copied!" data-code="export default { async fetch(request, env, ctx) { try { const value = await env.NAMESPACE.list(); return new Response(JSON.stringify(value.keys), { status: 200 }); } catch (e) { return new Response(e.message, {status: 500}); } },};"> <div></div></button> </div> </figure> </div> <div tabindex="-1" class="heading-wrapper level-h2"> <h2 id="reference">Reference</h2><a class="anchor-link" href="https://developers-cloudflare-com.translate.goog/kv/api/list-keys/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#reference"><span aria-hidden="true" class="anchor-icon"> <svg width="16" height="16" viewbox="0 0 24 24"> <path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z" /> </svg></span></a> </div> <p>The following method is provided to list the keys of KV:</p> <ul> <li><a href="https://developers-cloudflare-com.translate.goog/kv/api/list-keys/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#list-method">list()</a></li> </ul> <div tabindex="-1" class="heading-wrapper level-h3"> <h3 id="list-method"><code dir="auto">list()</code> method</h3><a class="anchor-link" href="https://developers-cloudflare-com.translate.goog/kv/api/list-keys/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#list-method"><span aria-hidden="true" class="anchor-icon"> <svg width="16" height="16" viewbox="0 0 24 24"> <path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z" /> </svg></span></a> </div> <p>To list all the keys in your KV namespace, call the <code dir="auto">list()</code> method of the <a href="https://developers-cloudflare-com.translate.goog/kv/concepts/kv-bindings/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB">KV binding</a> on any KV namespace you have bound to your Worker code:</p> <div class="expressive-code"> <figure class="frame not-content"> <figcaption class="header"></figcaption> <pre data-language="ts"><code> <div class="ec-line"> <div class="code"> <span style="--0:#EEFFFF;--1:#00268F">env</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#EEFFFF;--1:#00268F">NAMESPACE</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">list</span><span style="--0:#EEFFFF;--1:#62676A">(</span><span style="--1:#8F1500"><span style="--0:#D5D7D8">options</span><span style="--0:#EE9080">?</span></span><span style="--0:#EEFFFF;--1:#62676A">)</span> </div> </div></code></pre> <div class="copy"> <button title="Copy to clipboard" data-copied="Copied!" data-code="env.NAMESPACE.list(options?)"> <div></div></button> </div> </figure> </div> <div tabindex="-1" class="heading-wrapper level-h4"> <h4 id="parameters">Parameters</h4><a class="anchor-link" href="https://developers-cloudflare-com.translate.goog/kv/api/list-keys/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#parameters"><span aria-hidden="true" class="anchor-icon"> <svg width="16" height="16" viewbox="0 0 24 24"> <path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z" /> </svg></span></a> </div> <ul> <li><code dir="auto">options</code>: <code dir="auto">{ prefix?: string, limit?: string, cursor?: string }</code> <ul> <li>An object with attributes <code dir="auto">prefix</code> (optional), <code dir="auto">limit</code> (optional), or <code dir="auto">cursor</code> (optional). <ul> <li><code dir="auto">prefix</code> is a <code dir="auto">string</code> that represents a prefix you can use to filter all keys.</li> <li><code dir="auto">limit</code> is the maximum number of keys returned. The default is 1,000, which is the maximum. It is unlikely that you will want to change this default but it is included for completeness.</li> <li><code dir="auto">cursor</code> is a <code dir="auto">string</code> used for paginating responses.</li> </ul></li> </ul></li> </ul> <div tabindex="-1" class="heading-wrapper level-h4"> <h4 id="response">Response</h4><a class="anchor-link" href="https://developers-cloudflare-com.translate.goog/kv/api/list-keys/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#response"><span aria-hidden="true" class="anchor-icon"> <svg width="16" height="16" viewbox="0 0 24 24"> <path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z" /> </svg></span></a> </div> <ul> <li><code dir="auto">response</code>: <code dir="auto">Promise<{ keys: { name: string, expiration?: number, metadata?: object }[], list_complete: boolean, cursor: string }></code> <ul> <li>A <code dir="auto">Promise</code> that resolves to an object containing <code dir="auto">keys</code>, <code dir="auto">list_complete</code>, and <code dir="auto">cursor</code> attributes. <ul> <li><code dir="auto">keys</code> is an array that contains an object for each key listed. Each object has attributes <code dir="auto">name</code>, <code dir="auto">expiration</code> (optional), and <code dir="auto">metadata</code> (optional). If the key-value pair has an expiration set, the expiration will be present and in absolute value form (even if it was set in TTL form). If the key-value pair has non-null metadata set, the metadata will be present.</li> <li><code dir="auto">list_complete</code> is a boolean, which will be <code dir="auto">false</code> if there are more keys to fetch, even if the <code dir="auto">keys</code> array is empty.</li> <li><code dir="auto">cursor</code> is a <code dir="auto">string</code> used for paginating responses.</li> </ul></li> </ul></li> </ul> <p>The <code dir="auto">list()</code> method returns a promise which resolves with an object that looks like the following:</p> <div class="expressive-code"> <figure class="frame not-content"> <figcaption class="header"></figcaption> <pre data-language="json"><code> <div class="ec-line"> <div class="code"> <span style="--0:#89DDFF;--1:#007474">{</span> </div> </div> <div class="ec-line"> <div class="code"> <span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">"</span><span style="--0:#C895EA;--1:#7C5B92">keys</span><span style="--0:#89DDFF;--1:#007474">"</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">[</span> </div> </div> <div class="ec-line"> <div class="code"> <span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">{</span> </div> </div> <div class="ec-line"> <div class="code"> <span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">"</span><span style="--0:#FFCB6B;--1:#7E6435">name</span><span style="--0:#89DDFF;--1:#007474">"</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">"foo"</span><span style="--0:#89DDFF;--1:#007474">,</span> </div> </div> <div class="ec-line"> <div class="code"> <span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">"</span><span style="--0:#FFCB6B;--1:#7E6435">expiration</span><span style="--0:#89DDFF;--1:#007474">"</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#8EA7ED;--1:#00268F">1234</span><span style="--0:#89DDFF;--1:#007474">,</span> </div> </div> <div class="ec-line"> <div class="code"> <span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">"</span><span style="--0:#FFCB6B;--1:#7E6435">metadata</span><span style="--0:#89DDFF;--1:#007474">"</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">{</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">"</span><span style="--0:#F78C6C;--1:#985643">someMetadataKey</span><span style="--0:#89DDFF;--1:#007474">"</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">"someMetadataValue"</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">}</span> </div> </div> <div class="ec-line"> <div class="code"> <span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">}</span> </div> </div> <div class="ec-line"> <div class="code"> <span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">],</span> </div> </div> <div class="ec-line"> <div class="code"> <span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">"</span><span style="--0:#C895EA;--1:#7C5B92">list_complete</span><span style="--0:#89DDFF;--1:#007474">"</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#EE9080;--1:#32008F">false</span><span style="--0:#89DDFF;--1:#007474">,</span> </div> </div> <div class="ec-line"> <div class="code"> <span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">"</span><span style="--0:#C895EA;--1:#7C5B92">cursor</span><span style="--0:#89DDFF;--1:#007474">"</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">"6Ck1la0VxJ0djhidm1MdX2FyD"</span> </div> </div> <div class="ec-line"> <div class="code"> <span style="--0:#89DDFF;--1:#007474">}</span> </div> </div></code></pre> <div class="copy"> <button title="Copy to clipboard" data-copied="Copied!" data-code="{ "keys": [ { "name": "foo", "expiration": 1234, "metadata": { "someMetadataKey": "someMetadataValue" } } ], "list_complete": false, "cursor": "6Ck1la0VxJ0djhidm1MdX2FyD"}"> <div></div></button> </div> </figure> </div> <p>The <code dir="auto">keys</code> property will contain an array of objects describing each key. That object will have one to three keys of its own: the <code dir="auto">name</code> of the key, and optionally the key's <code dir="auto">expiration</code> and <code dir="auto">metadata</code> values.</p> <p>The <code dir="auto">name</code> is a <code dir="auto">string</code>, the <code dir="auto">expiration</code> value is a number, and <code dir="auto">metadata</code> is whatever type was set initially. The <code dir="auto">expiration</code> value will only be returned if the key has an expiration and will be in the absolute value form, even if it was set in the TTL form. Any <code dir="auto">metadata</code> will only be returned if the given key has non-null associated metadata.</p> <p>If <code dir="auto">list_complete</code> is <code dir="auto">false</code>, there are more keys to fetch, even if the <code dir="auto">keys</code> array is empty. You will use the <code dir="auto">cursor</code> property to get more keys. Refer to <a href="https://developers-cloudflare-com.translate.goog/kv/api/list-keys/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#pagination">Pagination</a> for more details.</p> <p>Consider storing your values in metadata if your values fit in the <a href="https://developers-cloudflare-com.translate.goog/kv/platform/limits/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB">metadata-size limit</a>. Storing values in metadata is more efficient than a <code dir="auto">list()</code> followed by a <code dir="auto">get()</code> per key. When using <code dir="auto">put()</code>, leave the <code dir="auto">value</code> parameter empty and instead include a property in the metadata object:</p> <div class="expressive-code"> <figure class="frame not-content"> <figcaption class="header"></figcaption> <pre data-language="js"><code> <div class="ec-line"> <div class="code"> <span style="--0:#EE9080;--1:#8F1500">await</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#EEFFFF;--1:#00268F">NAMESPACE</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">put</span><span style="--0:#EEFFFF;--1:#62676A">(</span><span style="--0:#D5D7D8;--1:#8F1500">key</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">""</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">{</span> </div> </div> <div class="ec-line"> <div class="code"> <span class="indent"><span style="--0:#EEFFFF;--1:#62676A"> </span></span><span style="--0:#EEFFFF;--1:#62676A">metadata</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">{</span><span style="--0:#EEFFFF;--1:#62676A"> value</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#D5D7D8;--1:#8F1500">value</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">},</span> </div> </div> <div class="ec-line"> <div class="code"> <span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EEFFFF;--1:#62676A">)</span><span style="--0:#89DDFF;--1:#007474">;</span> </div> </div></code></pre> <div class="copy"> <button title="Copy to clipboard" data-copied="Copied!" data-code="await NAMESPACE.put(key, "", { metadata: { value: value },});"> <div></div></button> </div> </figure> </div> <p>Changes may take up to 60 seconds (or the value set with <code dir="auto">cacheTtl</code> of the <code dir="auto">get()</code> or <code dir="auto">getWithMetadata()</code> method) to be reflected on the application calling the method on the KV namespace.</p> <div tabindex="-1" class="heading-wrapper level-h2"> <h2 id="guidance">Guidance</h2><a class="anchor-link" href="https://developers-cloudflare-com.translate.goog/kv/api/list-keys/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#guidance"><span aria-hidden="true" class="anchor-icon"> <svg width="16" height="16" viewbox="0 0 24 24"> <path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z" /> </svg></span></a> </div> <div tabindex="-1" class="heading-wrapper level-h3"> <h3 id="list-by-prefix">List by prefix</h3><a class="anchor-link" href="https://developers-cloudflare-com.translate.goog/kv/api/list-keys/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#list-by-prefix"><span aria-hidden="true" class="anchor-icon"> <svg width="16" height="16" viewbox="0 0 24 24"> <path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z" /> </svg></span></a> </div> <p>List all the keys starting with a particular prefix.</p> <p>For example, you may have structured your keys with a user, a user ID, and key names, separated by colons (such as <code dir="auto">user:1:<key></code>). You could get the keys for user number one by using the following code:</p> <div class="expressive-code"> <figure class="frame not-content"> <figcaption class="header"></figcaption> <pre data-language="js"><code> <div class="ec-line"> <div class="code"> <span style="--0:#EE9080;--1:#8F1500">export</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#EE9080;--1:#8F1500">default</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">{</span> </div> </div> <div class="ec-line"> <div class="code"> <span class="indent"> </span><span style="--0:#EE9080;--1:#8F1500">async</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#57C78F;--1:#00783C">fetch</span><span style="--0:#89DDFF;--1:#007474">(</span><span style="--0:#B59EE1;--1:#7C008F">request</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#B59EE1;--1:#7C008F">env</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#B59EE1;--1:#7C008F">ctx</span><span style="--0:#89DDFF;--1:#007474">)</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">{</span> </div> </div> <div class="ec-line"> <div class="code"> <span class="indent"> </span><span style="--0:#EE9080;--1:#8F1500">const</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EEFFFF;--1:#00268F">value</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">=</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">await</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EEFFFF;--1:#00268F">env</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#EEFFFF;--1:#00268F">NAMESPACE</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">list</span><span style="--0:#EE9080;--1:#32008F">(</span><span style="--0:#89DDFF;--1:#007474">{</span><span style="--0:#EE9080;--1:#32008F"> prefix</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#FDDA68;--1:#A84E00">"user:1:"</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EE9080;--1:#32008F">)</span><span style="--0:#89DDFF;--1:#007474">;</span> </div> </div> <div class="ec-line"> <div class="code"> <span class="indent"> </span><span style="--0:#EE9080;--1:#8F1500">return</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#EE9080;--1:#8F1500">new</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#57C78F;--1:#00783C">Response</span><span style="--0:#EEFFFF;--1:#62676A">(</span><span style="--0:#EEFFFF;--1:#00268F">value</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#EEFFFF;--1:#00268F">keys</span><span style="--0:#EEFFFF;--1:#62676A">)</span><span style="--0:#89DDFF;--1:#007474">;</span> </div> </div> <div class="ec-line"> <div class="code"> <span class="indent"> </span><span style="--0:#89DDFF;--1:#007474">},</span> </div> </div> <div class="ec-line"> <div class="code"> <span style="--0:#89DDFF;--1:#007474">};</span> </div> </div></code></pre> <div class="copy"> <button title="Copy to clipboard" data-copied="Copied!" data-code="export default { async fetch(request, env, ctx) { const value = await env.NAMESPACE.list({ prefix: "user:1:" }); return new Response(value.keys); },};"> <div></div></button> </div> </figure> </div> <p>This will return all keys starting with the <code dir="auto">"user:1:"</code> prefix.</p> <div tabindex="-1" class="heading-wrapper level-h3"> <h3 id="ordering">Ordering</h3><a class="anchor-link" href="https://developers-cloudflare-com.translate.goog/kv/api/list-keys/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#ordering"><span aria-hidden="true" class="anchor-icon"> <svg width="16" height="16" viewbox="0 0 24 24"> <path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z" /> </svg></span></a> </div> <p>Keys are always returned in lexicographically sorted order according to their UTF-8 bytes.</p> <div tabindex="-1" class="heading-wrapper level-h3"> <h3 id="pagination">Pagination</h3><a class="anchor-link" href="https://developers-cloudflare-com.translate.goog/kv/api/list-keys/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#pagination"><span aria-hidden="true" class="anchor-icon"> <svg width="16" height="16" viewbox="0 0 24 24"> <path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z" /> </svg></span></a> </div> <p>If there are more keys to fetch, the <code dir="auto">list_complete</code> key will be set to <code dir="auto">false</code> and a <code dir="auto">cursor</code> will also be returned. In this case, you can call <code dir="auto">list()</code> again with the <code dir="auto">cursor</code> value to get the next batch of keys:</p> <div class="expressive-code"> <figure class="frame not-content"> <figcaption class="header"></figcaption> <pre data-language="js"><code> <div class="ec-line"> <div class="code"> <span style="--0:#EE9080;--1:#8F1500">const</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EEFFFF;--1:#00268F">value</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">=</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">await</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EEFFFF;--1:#00268F">NAMESPACE</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">list</span><span style="--0:#EE9080;--1:#32008F">()</span><span style="--0:#89DDFF;--1:#007474">;</span> </div> </div> <div class="ec-line"> <div class="code"> </div> </div> <div class="ec-line"> <div class="code"> <span style="--0:#EE9080;--1:#8F1500">const</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EEFFFF;--1:#00268F">cursor</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">=</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EEFFFF;--1:#00268F">value</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#EEFFFF;--1:#00268F">cursor</span><span style="--0:#89DDFF;--1:#007474">;</span> </div> </div> <div class="ec-line"> <div class="code"> </div> </div> <div class="ec-line"> <div class="code"> <span style="--0:#EE9080;--1:#8F1500">const</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EEFFFF;--1:#00268F">next_value</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">=</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EE9080;--1:#8F1500">await</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#EEFFFF;--1:#00268F">NAMESPACE</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">list</span><span style="--0:#EE9080;--1:#32008F">(</span><span style="--0:#89DDFF;--1:#007474">{</span><span style="--0:#EE9080;--1:#32008F"> cursor</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#D5D7D8;--1:#8F1500">cursor</span><span style="--0:#EE9080;--1:#32008F"> </span><span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EE9080;--1:#32008F">)</span><span style="--0:#89DDFF;--1:#007474">;</span> </div> </div></code></pre> <div class="copy"> <button title="Copy to clipboard" data-copied="Copied!" data-code="const value = await NAMESPACE.list();const cursor = value.cursor;const next_value = await NAMESPACE.list({ cursor: cursor });"> <div></div></button> </div> </figure> </div> <p>Checking for an empty array in <code dir="auto">keys</code> is not sufficient to determine whether there are more keys to fetch. Instead, use <code dir="auto">list_complete</code>.</p> <p>It is possible to have an empty array in <code dir="auto">keys</code>, but still have more keys to fetch, because <a href="https://translate.google.com/website?sl=pl&tl=en&hl=en-GB&u=https://en.wikipedia.org/wiki/Tombstone_%2528data_store%2529" target="_blank" rel="noopener">recently expired or deleted keys<span> ↗</span></a> must be iterated through but will not be included in the returned <code dir="auto">keys</code>.</p> <p>When de-paginating a large result set while also providing a <code dir="auto">prefix</code> argument, the <code dir="auto">prefix</code> argument must be provided in all subsequent calls along with the initial arguments.</p> <div tabindex="-1" class="heading-wrapper level-h3"> <h3 id="optimizing-storage-with-metadata-for-list-operations">Optimizing storage with metadata for <code dir="auto">list()</code> operations</h3><a class="anchor-link" href="https://developers-cloudflare-com.translate.goog/kv/api/list-keys/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#optimizing-storage-with-metadata-for-list-operations"><span aria-hidden="true" class="anchor-icon"> <svg width="16" height="16" viewbox="0 0 24 24"> <path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z" /> </svg></span></a> </div> <p>Consider storing your values in metadata if your values fit in the <a href="https://developers-cloudflare-com.translate.goog/kv/platform/limits/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB">metadata-size limit</a>. Storing values in metadata is more efficient than a <code dir="auto">list()</code> followed by a <code dir="auto">get()</code> per key. When using <code dir="auto">put()</code>, leave the <code dir="auto">value</code> parameter empty and instead include a property in the metadata object:</p> <div class="expressive-code"> <figure class="frame not-content"> <figcaption class="header"></figcaption> <pre data-language="js"><code> <div class="ec-line"> <div class="code"> <span style="--0:#EE9080;--1:#8F1500">await</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#EEFFFF;--1:#00268F">NAMESPACE</span><span style="--0:#89DDFF;--1:#007474">.</span><span style="--0:#57C78F;--1:#00783C">put</span><span style="--0:#EEFFFF;--1:#62676A">(</span><span style="--0:#D5D7D8;--1:#8F1500">key</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#FDDA68;--1:#A84E00">""</span><span style="--0:#89DDFF;--1:#007474">,</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">{</span> </div> </div> <div class="ec-line"> <div class="code"> <span class="indent"><span style="--0:#EEFFFF;--1:#62676A"> </span></span><span style="--0:#EEFFFF;--1:#62676A">metadata</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">{</span><span style="--0:#EEFFFF;--1:#62676A"> value</span><span style="--0:#89DDFF;--1:#007474">:</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#D5D7D8;--1:#8F1500">value</span><span style="--0:#EEFFFF;--1:#62676A"> </span><span style="--0:#89DDFF;--1:#007474">},</span> </div> </div> <div class="ec-line"> <div class="code"> <span style="--0:#89DDFF;--1:#007474">}</span><span style="--0:#EEFFFF;--1:#62676A">)</span><span style="--0:#89DDFF;--1:#007474">;</span> </div> </div></code></pre> <div class="copy"> <button title="Copy to clipboard" data-copied="Copied!" data-code="await NAMESPACE.put(key, "", { metadata: { value: value },});"> <div></div></button> </div> </figure> </div> <div tabindex="-1" class="heading-wrapper level-h2"> <h2 id="other-methods-to-access-kv">Other methods to access KV</h2><a class="anchor-link" href="https://developers-cloudflare-com.translate.goog/kv/api/list-keys/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#other-methods-to-access-kv"><span aria-hidden="true" class="anchor-icon"> <svg width="16" height="16" viewbox="0 0 24 24"> <path fill="currentcolor" d="m12.11 15.39-3.88 3.88a2.52 2.52 0 0 1-3.5 0 2.47 2.47 0 0 1 0-3.5l3.88-3.88a1 1 0 0 0-1.42-1.42l-3.88 3.89a4.48 4.48 0 0 0 6.33 6.33l3.89-3.88a1 1 0 1 0-1.42-1.42Zm8.58-12.08a4.49 4.49 0 0 0-6.33 0l-3.89 3.88a1 1 0 0 0 1.42 1.42l3.88-3.88a2.52 2.52 0 0 1 3.5 0 2.47 2.47 0 0 1 0 3.5l-3.88 3.88a1 1 0 1 0 1.42 1.42l3.88-3.89a4.49 4.49 0 0 0 0-6.33ZM8.83 15.17a1 1 0 0 0 1.1.22 1 1 0 0 0 .32-.22l4.92-4.92a1 1 0 0 0-1.42-1.42l-4.92 4.92a1 1 0 0 0 0 1.42Z" /> </svg></span></a> </div> <p>You can also <a href="https://developers-cloudflare-com.translate.goog/kv/reference/kv-commands/?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB#list">list keys on the command line with Wrangler</a> or <a href="https://developers-cloudflare-com.translate.goog/api/operations/workers-kv-namespace-list-a-namespace'-s-keys?_x_tr_sl=pl&_x_tr_tl=en&_x_tr_hl=en-GB">with the REST API</a>.</p> <div class="feedback-prompt-content astro-cedpceuv"><feedback-prompt class="not-content astro-x6kpz2mu"> <div id="feedback-thumbs" class="astro-x6kpz2mu"> <h2 class="astro-x6kpz2mu">Was this helpful?</h2> <div class="not-content astro-x6kpz2mu"> <svg width="1em" height="1em" class="astro-x6kpz2mu" data-icon="material-symbols:thumb-up-outline-rounded"> <title>Yes</title><symbol id="ai:material-symbols:thumb-up-outline-rounded" viewbox="0 0 24 24"> <path fill="currentColor" d="M21 8q.8 0 1.4.6T23 10v2q0 .175-.05.375t-.1.375l-3 7.05q-.225.5-.75.85T18 21H7V8l6-5.95q.375-.375.888-.437t.987.187t.7.7t.1.925L14.55 8zM9 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