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But, lazy beans are..." template="web-share-button"> </web-share-wrapper> <template id="web-share-button"> <a href="#" class="dropdown-link-row crayons-link crayons-link--block">Share Post via...</a> </template> <a href="/report-abuse" class="crayons-link crayons-link--block">Report Abuse</a> </div> </div> </div> </div> </aside> <main id="main-content" class="crayons-layout__content grid gap-4"> <div class="article-wrapper"> <article class="crayons-card crayons-article mb-4" id="article-show-container" data-article-id="475761" data-article-slug="lazy-beans-in-spring-1j0" data-author-id="363362" data-author-name="eidher" data-author-username="eidher" data-co-author-ids="" data-path="/eidher/lazy-beans-in-spring-1j0" data-pin-path="/stories/feed/pinned_article" data-pinned-article-id="" data-published="true" data-scheduled="false" lang=en > <header class="crayons-article__header" id="main-title"> <div class="crayons-article__header__meta"> <div class="flex s:items-start flex-col s:flex-row"> <div id="action-space" class="crayons-article__actions mb-4 s:mb-0 s:order-last"></div> <div class="flex flex-1 mb-5 items-start"> <div class="relative"> <a href="/eidher"><img class="radius-full align-middle" src="https://media2.dev.to/dynamic/image/width=50,height=50,fit=cover,gravity=auto,format=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F363362%2F3fad91dc-9a48-4c3c-91a8-05e3b4561bd1.jpeg" width="40" height="40" alt="eidher" /></a> </div> <div class="pl-3 flex-1"> <a href="/eidher" class="crayons-link fw-bold">eidher</a> <p class="fs-xs color-base-60"> Posted on <time datetime="2020-10-05T02:48:27Z" class="date">Oct 5, 2020</time> • Edited on <time datetime="2023-02-20T17:13:02Z" class="date">Feb 20, 2023</time> </p> </div> </div> </div> <div class="multiple_reactions_engagement"> <span class="reaction_engagement_like hidden"> <img 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</span> </span> <span class="reaction_engagement_fire hidden"> <img src="https://assets.dev.to/assets/fire-f60e7a582391810302117f987b22a8ef04a2fe0df7e3258a5f49332df1cec71e.svg" width="24" height="24" /> <span id="reaction_engagement_fire_count"> </span> </span> </div> <h1 class=" fs-3xl m:fs-4xl l:fs-5xl fw-bold s:fw-heavy lh-tight mb-2 short"> Lazy Beans in Spring </h1> <div class="spec__tags flex flex-wrap"> <a class="crayons-tag " style=" --tag-bg: rgba(59, 73, 223, 0.10); --tag-prefix: #3b49df; --tag-bg-hover: rgba(59, 73, 223, 0.10); --tag-prefix-hover: #3b49df; " href="/t/lazy"><span class="crayons-tag__prefix">#</span>lazy</a> <a class="crayons-tag " style=" --tag-bg: rgba(59, 73, 223, 0.10); --tag-prefix: #3b49df; --tag-bg-hover: rgba(59, 73, 223, 0.10); --tag-prefix-hover: #3b49df; " href="/t/spring"><span class="crayons-tag__prefix">#</span>spring</a> <a class="crayons-tag " style=" --tag-bg: rgba(126, 72, 16, 0.10); --tag-prefix: #7e4810; --tag-bg-hover: rgba(126, 72, 16, 0.10); --tag-prefix-hover: #7e4810; " href="/t/java"><span class="crayons-tag__prefix">#</span>java</a> <a class="crayons-tag " style=" --tag-bg: rgba(59, 73, 223, 0.10); --tag-prefix: #3b49df; --tag-bg-hover: rgba(59, 73, 223, 0.10); --tag-prefix-hover: #3b49df; " href="/t/beans"><span class="crayons-tag__prefix">#</span>beans</a> </div> </div> </header> <div class="crayons-article__main "> <nav class="series-switcher crayons-card crayons-card--secondary"> <header class="crayons-card__header"> <h2 class="crayons-subtitle-2"> <a href="/eidher/series/21942">Spring Framework (24 Part Series)</a> </h2> </header> <div class="series-switcher__list"> <a href="/eidher/dependency-injection-using-spring-ckk" class="crayons-link crayons-link--contentful series-switcher__link " data-preload-image="" title="Published Sep 27 '20"> <span class="series-switcher__num">1</span> <span class="series-switcher__title">Spring Configuration</span> </a> <a href="/eidher/external-properties-in-spring-4hb4" class="crayons-link crayons-link--contentful series-switcher__link " data-preload-image="" title="Published Oct 3 '20"> <span class="series-switcher__num">2</span> <span class="series-switcher__title">External Properties in Spring</span> </a> <a href="/eidher/profiles-in-spring-490p" class="crayons-link crayons-link--contentful series-switcher__link series-switcher__link--active series-switcher__link--inbetween" data-preload-image="" id="collection-link-inbetween" data-no-instant title="View more"> <span class="series-switcher__num">...</span> <span class="series-switcher__title">20 more parts...</span> </a> <a href="/eidher/profiles-in-spring-490p" class="crayons-link crayons-link--contentful series-switcher__link series-switcher__link--hidden" data-preload-image="" title="Published Oct 3 '20"> <span class="series-switcher__num">3</span> <span class="series-switcher__title">Profiles in Spring</span> </a> <a href="/eidher/spring-expression-language-spel-32fa" class="crayons-link crayons-link--contentful series-switcher__link series-switcher__link--hidden" data-preload-image="" title="Published Oct 3 '20"> <span class="series-switcher__num">4</span> <span class="series-switcher__title">Spring Expression Language (SpEL)</span> </a> <a href="/eidher/how-spring-implements-singleton-beans-2332" class="crayons-link crayons-link--contentful series-switcher__link series-switcher__link--hidden" data-preload-image="" title="Published Oct 3 '20"> <span class="series-switcher__num">5</span> <span class="series-switcher__title">How Spring implements Singleton Beans</span> </a> <a href="/eidher/converting-explicit-into-implicit-configuration-in-spring0-316i" class="crayons-link crayons-link--contentful series-switcher__link series-switcher__link--hidden" data-preload-image="" title="Published Oct 5 '20"> <span class="series-switcher__num">6</span> <span class="series-switcher__title">Converting explicit into implicit configuration in Spring</span> </a> <a href="/eidher/autowiring-in-spring-f89" class="crayons-link crayons-link--contentful series-switcher__link series-switcher__link--hidden" data-preload-image="" title="Published Oct 5 '20"> <span class="series-switcher__num">7</span> <span class="series-switcher__title">Autowiring in Spring</span> </a> <a href="/eidher/lazy-beans-in-spring-1j0" class="crayons-link crayons-link--contentful series-switcher__link series-switcher__link--active series-switcher__link--hidden" data-preload-image="" title="Published Oct 5 '20"> <span class="series-switcher__num">8</span> <span class="series-switcher__title">Lazy Beans in Spring</span> </a> <a href="/eidher/postconstruct-and-predestroy-in-spring-2lkh" class="crayons-link crayons-link--contentful series-switcher__link series-switcher__link--hidden" data-preload-image="" title="Published Oct 6 '20"> <span class="series-switcher__num">9</span> <span class="series-switcher__title">@PostConstruct and @PreDestroy in Spring</span> </a> <a href="/eidher/stereotype-and-meta-annotations-in-spring-1klk" class="crayons-link crayons-link--contentful series-switcher__link series-switcher__link--hidden" data-preload-image="" title="Published Oct 6 '20"> <span class="series-switcher__num">10</span> <span class="series-switcher__title">Stereotype and Meta Annotations in Spring</span> </a> <a href="/eidher/spring-s-factorybean-interface-2c99" class="crayons-link crayons-link--contentful series-switcher__link series-switcher__link--hidden" data-preload-image="" title="Published Oct 6 '20"> <span class="series-switcher__num">11</span> <span class="series-switcher__title">Spring's FactoryBean Interface</span> </a> <a href="/eidher/the-spring-bean-lifecycle-2m71" class="crayons-link crayons-link--contentful series-switcher__link series-switcher__link--hidden" data-preload-image="" title="Published Oct 8 '20"> <span class="series-switcher__num">12</span> <span class="series-switcher__title">The Spring Bean Lifecycle</span> </a> <a href="/eidher/spring-aop-1dpp" class="crayons-link crayons-link--contentful series-switcher__link series-switcher__link--hidden" data-preload-image="" title="Published Oct 17 '20"> <span class="series-switcher__num">13</span> <span class="series-switcher__title">Spring AOP</span> </a> <a href="/eidher/caching-in-spring-m1e" class="crayons-link crayons-link--contentful series-switcher__link series-switcher__link--hidden" data-preload-image="" title="Published Oct 17 '20"> <span class="series-switcher__num">14</span> <span class="series-switcher__title">Caching in Spring</span> </a> <a href="/eidher/spring-jdbc-4d3i" class="crayons-link crayons-link--contentful series-switcher__link series-switcher__link--hidden" data-preload-image="" title="Published Oct 18 '20"> <span class="series-switcher__num">15</span> <span class="series-switcher__title">Spring JDBC</span> </a> <a href="/eidher/spring-transaction-management-bm0" class="crayons-link crayons-link--contentful series-switcher__link series-switcher__link--hidden" data-preload-image="" title="Published Oct 24 '20"> <span class="series-switcher__num">16</span> <span class="series-switcher__title">Spring Transaction Management</span> </a> <a href="/eidher/jpa-with-spring-6il" class="crayons-link crayons-link--contentful series-switcher__link series-switcher__link--hidden" data-preload-image="" title="Published Oct 25 '20"> <span class="series-switcher__num">17</span> <span class="series-switcher__title">JPA with Spring</span> </a> <a href="/eidher/jpa-with-spring-boot-p65" class="crayons-link crayons-link--contentful series-switcher__link series-switcher__link--hidden" data-preload-image="" title="Published Nov 8 '20"> <span class="series-switcher__num">18</span> <span class="series-switcher__title">JPA with Spring Boot</span> </a> <a href="/eidher/spring-web-mvc-3adg" class="crayons-link crayons-link--contentful series-switcher__link series-switcher__link--hidden" data-preload-image="" title="Published Nov 9 '20"> <span class="series-switcher__num">19</span> <span class="series-switcher__title">Spring Web MVC</span> </a> <a href="/eidher/spring-boot-for-war-447" class="crayons-link crayons-link--contentful series-switcher__link series-switcher__link--hidden" data-preload-image="" title="Published Nov 10 '20"> <span class="series-switcher__num">20</span> <span class="series-switcher__title">Spring Boot for war</span> </a> <a href="/eidher/spring-mvc-rest-196h" class="crayons-link crayons-link--contentful series-switcher__link series-switcher__link--hidden" data-preload-image="" title="Published Nov 11 '20"> <span class="series-switcher__num">21</span> <span class="series-switcher__title">Spring MVC REST</span> </a> <a href="/eidher/reactive-spring-applications-1d47" class="crayons-link crayons-link--contentful series-switcher__link series-switcher__link--hidden" data-preload-image="" title="Published Nov 16 '20"> <span class="series-switcher__num">22</span> <span class="series-switcher__title">Reactive Spring Applications</span> </a> <a href="/eidher/spring-security-ejk" class="crayons-link crayons-link--contentful series-switcher__link " data-preload-image="" title="Published Nov 21 '20"> <span class="series-switcher__num">23</span> <span class="series-switcher__title">Spring Security</span> </a> <a href="/eidher/spring-injection-types-c6d" class="crayons-link crayons-link--contentful series-switcher__link " data-preload-image="" title="Published Jan 11 '21"> <span class="series-switcher__num">24</span> <span class="series-switcher__title">Spring Injection Types</span> </a> </div> </nav> <div class="crayons-article__body text-styles spec__body" data-article-id="475761" id="article-body"> <p>Beans are created on startup when the application context is created (eagerly). But, lazy beans are created the first time they are used. Its use is not recommended.<br> </p> <div class="highlight js-code-highlight"> <pre class="highlight java"><code><span class="nd">@Lazy</span> <span class="nd">@Component</span><span class="o">(</span><span class="s">"jdbcRepository"</span><span class="o">)</span> <span class="kd">public</span> <span class="kd">class</span> <span class="nc">JdbcRepositoryImpl</span> <span class="kd">implements</span> <span class="nc">AppRepository</span> <span class="o">{</span> <span class="o">...</span> <span class="o">}</span> </code></pre> <div class="highlight__panel js-actions-panel"> <div class="highlight__panel-action js-fullscreen-code-action"> <svg xmlns="http://www.w3.org/2000/svg" width="20px" height="20px" viewbox="0 0 24 24" class="highlight-action crayons-icon highlight-action--fullscreen-on"><title>Enter fullscreen mode</title> <path d="M16 3h6v6h-2V5h-4V3zM2 3h6v2H4v4H2V3zm18 16v-4h2v6h-6v-2h4zM4 19h4v2H2v-6h2v4z"></path> </svg> <svg xmlns="http://www.w3.org/2000/svg" width="20px" height="20px" viewbox="0 0 24 24" class="highlight-action crayons-icon highlight-action--fullscreen-off"><title>Exit fullscreen mode</title> <path d="M18 7h4v2h-6V3h2v4zM8 9H2V7h4V3h2v6zm10 8v4h-2v-6h6v2h-4zM8 15v6H6v-4H2v-2h6z"></path> </svg> </div> </div> </div> <p>When we put the @Lazy annotation over the @Configuration class, all the methods with @Bean annotation should be loaded lazily.</p> </div> </div> <section id="comments" data-follow-button-container="true" data-updated-at="2025-02-17 18:41:24 UTC" class="text-padding mb-4 border-t-1 border-0 border-solid border-base-10"> <header class="relative flex justify-between items-center mb-6"> <div class="flex items-center"> <h2 class="crayons-subtitle-1"> Top comments <span class="js-comments-count" data-comments-count="2">(2)</span> </h2> </div> <div id="comment-subscription" class="print-hidden"> <div class="crayons-btn-group"> <span class="crayons-btn crayons-btn--outlined">Subscribe</span> </div> </div> </header> <div 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class="profile-preview-card__content p-4 pt-0 branded-7 crayons-dropdown" style="--card-color: #d0752c; border-top-color: var(--card-color);" data-testid="profile-preview-card" data-repositioning-dropdown="true"> <div class="gap-4 grid"> <div class="-mt-4"> <a href="/kriska" class="flex"> <span class="crayons-avatar crayons-avatar--xl mr-2 shrink-0"> <img src="https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F270018%2Fd82bd5c9-c6fe-4719-8194-0a7a69516487.jpeg" class="crayons-avatar__image" alt="" loading="lazy" /> </span> <span class="crayons-link crayons-subtitle-2 mt-5"> Kristina Gocheva </span> </a> </div> <div class="print-hidden"> <button name="button" type="button" data-info="{"className":"User","style":"","id":270018,"name":"Kristina Gocheva"}" class="crayons-btn follow-action-button whitespace-nowrap w-100 follow-user" aria-label="Follow user: Kristina Gocheva" aria-pressed="false">Follow</button> </div> <div class="color-base-70"> 1/2 Doctor Who devotee + 1/2 Harry Potter admirer who has to work as a JAVA developer in order to survive </div> <div class="user-metadata-details"> <ul class="user-metadata-details-inner"> <li> <div class="key"> Location </div> <div class="value"> Apartment 404 somewhere in Bulgaria </div> </li> <li> <div class="key"> Education </div> <div class="value"> Computer Science </div> </li> <li> <div class="key"> Joined </div> <div class="value"> <time datetime="2019-11-12T07:40:03Z" class="date">Nov 12, 2019</time> </div> </li> </ul> </div> </div> </div> </div> <span class="color-base-30 px-2 m:pl-0" role="presentation">•</span> <a href="https://dev.to/eidher/lazy-beans-in-spring-1j0#comment-1637j" class="comment-date crayons-link crayons-link--secondary fs-s"> <time datetime="2020-10-05T06:56:59Z" class=date-short-year> Oct 5 '20 </time> </a> <div class="comment__dropdown" 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aria-label="Report Kristina Gocheva's comment as abusive or violating our code of conduct and/or terms and conditions"></li> <li class="current-user-actions"></li> </ul> </div> </div> </div> <div class=" comment__body text-styles text-styles--secondary body "> <p>You've described very briefly the lazy annotation and its effect. I would like to understand why you said that it's usages is not recommended. 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