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class="vector-toc-numb">3</span> <span>Voci correlate</span> </div> </a> <ul id="toc-Voci_correlate-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Indice" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Mostra/Nascondi l'indice" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet 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mw-list-item"><a href="https://az.wikipedia.org/wiki/Miqyaslanabilm%C9%99" title="Miqyaslanabilmə - azerbaigiano" lang="az" hreflang="az" data-title="Miqyaslanabilmə" data-language-autonym="Azərbaycanca" data-language-local-name="azerbaigiano" class="interlanguage-link-target"><span>Azərbaycanca</span></a></li><li class="interlanguage-link interwiki-bg mw-list-item"><a href="https://bg.wikipedia.org/wiki/%D0%9C%D0%B0%D1%89%D0%B0%D0%B1%D0%B8%D1%80%D1%83%D0%B5%D0%BC%D0%BE%D1%81%D1%82" title="Мащабируемост - bulgaro" lang="bg" hreflang="bg" data-title="Мащабируемост" data-language-autonym="Български" data-language-local-name="bulgaro" class="interlanguage-link-target"><span>Български</span></a></li><li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/Escalabilitat" title="Escalabilitat - catalano" lang="ca" hreflang="ca" data-title="Escalabilitat" data-language-autonym="Català" data-language-local-name="catalano" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/%C5%A0k%C3%A1lovatelnost" title="Škálovatelnost - ceco" lang="cs" hreflang="cs" data-title="Škálovatelnost" data-language-autonym="Čeština" data-language-local-name="ceco" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-da mw-list-item"><a href="https://da.wikipedia.org/wiki/Skalerbarhed" title="Skalerbarhed - danese" lang="da" hreflang="da" data-title="Skalerbarhed" data-language-autonym="Dansk" data-language-local-name="danese" class="interlanguage-link-target"><span>Dansk</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Skalierbarkeit" title="Skalierbarkeit - tedesco" lang="de" hreflang="de" data-title="Skalierbarkeit" data-language-autonym="Deutsch" data-language-local-name="tedesco" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Scalability" title="Scalability - inglese" lang="en" hreflang="en" data-title="Scalability" data-language-autonym="English" data-language-local-name="inglese" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/Escalabilidad" title="Escalabilidad - spagnolo" lang="es" hreflang="es" data-title="Escalabilidad" data-language-autonym="Español" data-language-local-name="spagnolo" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-et mw-list-item"><a href="https://et.wikipedia.org/wiki/Skaleeritavus" title="Skaleeritavus - estone" lang="et" hreflang="et" data-title="Skaleeritavus" data-language-autonym="Eesti" data-language-local-name="estone" class="interlanguage-link-target"><span>Eesti</span></a></li><li class="interlanguage-link interwiki-eu mw-list-item"><a href="https://eu.wikipedia.org/wiki/Eskalabilitate" title="Eskalabilitate - basco" lang="eu" hreflang="eu" data-title="Eskalabilitate" data-language-autonym="Euskara" data-language-local-name="basco" class="interlanguage-link-target"><span>Euskara</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D9%85%D9%82%DB%8C%D8%A7%D8%B3%E2%80%8C%D9%BE%D8%B0%DB%8C%D8%B1%DB%8C" title="مقیاس‌پذیری - persiano" lang="fa" hreflang="fa" data-title="مقیاس‌پذیری" data-language-autonym="فارسی" data-language-local-name="persiano" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/Extensibilit%C3%A9" title="Extensibilité - francese" lang="fr" hreflang="fr" data-title="Extensibilité" data-language-autonym="Français" data-language-local-name="francese" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-he mw-list-item"><a href="https://he.wikipedia.org/wiki/%D7%A1%D7%99%D7%9C%D7%95%D7%9E%D7%99%D7%95%D7%AA" title="סילומיות - ebraico" lang="he" hreflang="he" data-title="סילומיות" data-language-autonym="עברית" data-language-local-name="ebraico" class="interlanguage-link-target"><span>עברית</span></a></li><li class="interlanguage-link interwiki-hi mw-list-item"><a href="https://hi.wikipedia.org/wiki/%E0%A4%AE%E0%A4%BE%E0%A4%AA%E0%A4%A8%E0%A5%80%E0%A4%AF%E0%A4%A4%E0%A4%BE" title="मापनीयता - hindi" lang="hi" hreflang="hi" data-title="मापनीयता" data-language-autonym="हिन्दी" data-language-local-name="hindi" class="interlanguage-link-target"><span>हिन्दी</span></a></li><li class="interlanguage-link interwiki-hu mw-list-item"><a href="https://hu.wikipedia.org/wiki/Sk%C3%A1l%C3%A1zhat%C3%B3s%C3%A1g" title="Skálázhatóság - ungherese" lang="hu" hreflang="hu" data-title="Skálázhatóság" data-language-autonym="Magyar" data-language-local-name="ungherese" class="interlanguage-link-target"><span>Magyar</span></a></li><li class="interlanguage-link interwiki-id mw-list-item"><a href="https://id.wikipedia.org/wiki/Skalabilitas" title="Skalabilitas - indonesiano" lang="id" hreflang="id" data-title="Skalabilitas" data-language-autonym="Bahasa Indonesia" data-language-local-name="indonesiano" class="interlanguage-link-target"><span>Bahasa Indonesia</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E3%82%B9%E3%82%B1%E3%83%BC%E3%83%A9%E3%83%93%E3%83%AA%E3%83%86%E3%82%A3" title="スケーラビリティ - giapponese" lang="ja" hreflang="ja" data-title="スケーラビリティ" data-language-autonym="日本語" data-language-local-name="giapponese" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%ED%99%95%EC%9E%A5%EC%84%B1" title="확장성 - coreano" lang="ko" hreflang="ko" data-title="확장성" data-language-autonym="한국어" data-language-local-name="coreano" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-nl mw-list-item"><a href="https://nl.wikipedia.org/wiki/Schaalbaarheid" title="Schaalbaarheid - olandese" lang="nl" hreflang="nl" data-title="Schaalbaarheid" data-language-autonym="Nederlands" data-language-local-name="olandese" class="interlanguage-link-target"><span>Nederlands</span></a></li><li class="interlanguage-link interwiki-no mw-list-item"><a href="https://no.wikipedia.org/wiki/Skalerbarhet" title="Skalerbarhet - norvegese bokmål" lang="nb" hreflang="nb" data-title="Skalerbarhet" data-language-autonym="Norsk bokmål" data-language-local-name="norvegese bokmål" class="interlanguage-link-target"><span>Norsk bokmål</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/Skalowalno%C5%9B%C4%87" title="Skalowalność - polacco" lang="pl" hreflang="pl" data-title="Skalowalność" data-language-autonym="Polski" data-language-local-name="polacco" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Escalabilidade" title="Escalabilidade - portoghese" lang="pt" hreflang="pt" data-title="Escalabilidade" data-language-autonym="Português" data-language-local-name="portoghese" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ro mw-list-item"><a href="https://ro.wikipedia.org/wiki/Scalabilitate" title="Scalabilitate - rumeno" lang="ro" hreflang="ro" data-title="Scalabilitate" data-language-autonym="Română" data-language-local-name="rumeno" class="interlanguage-link-target"><span>Română</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%9C%D0%B0%D1%81%D1%88%D1%82%D0%B0%D0%B1%D0%B8%D1%80%D1%83%D0%B5%D0%BC%D0%BE%D1%81%D1%82%D1%8C" title="Масштабируемость - russo" lang="ru" hreflang="ru" data-title="Масштабируемость" data-language-autonym="Русский" data-language-local-name="russo" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-sl mw-list-item"><a href="https://sl.wikipedia.org/wiki/Nadgradljivost" title="Nadgradljivost - sloveno" lang="sl" hreflang="sl" data-title="Nadgradljivost" data-language-autonym="Slovenščina" data-language-local-name="sloveno" class="interlanguage-link-target"><span>Slovenščina</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%9C%D0%B0%D1%81%D1%88%D1%82%D0%B0%D0%B1%D0%BE%D0%B2%D0%BD%D1%96%D1%81%D1%82%D1%8C" title="Масштабовність - ucraino" lang="uk" hreflang="uk" data-title="Масштабовність" data-language-autonym="Українська" 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decoding="async" width="18" height="18" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/b/bc/Nota_disambigua.svg/27px-Nota_disambigua.svg.png 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/b/bc/Nota_disambigua.svg/36px-Nota_disambigua.svg.png 2x" data-file-width="200" data-file-height="200" /></span></span> <span class="hatnote-text"><a href="/wiki/Aiuto:Disambiguazione" title="Aiuto:Disambiguazione">Disambiguazione</a> – Se stai cercando scalabilità di un'azienda, vedi <b><a href="/wiki/Scalabilit%C3%A0_(economia)" title="Scalabilità (economia)">Scalabilità (economia)</a></b>.</span></div> </div> <p>Nell'<a href="/wiki/Ingegneria_del_software" title="Ingegneria del software">ingegneria del software</a>, nelle <a href="/wiki/Telecomunicazioni" class="mw-redirect" title="Telecomunicazioni">telecomunicazioni</a>, in <a href="/wiki/Informatica" title="Informatica">informatica</a> e in altre <a href="/wiki/Materia_(didattica)" class="mw-redirect" title="Materia (didattica)">discipline</a> tra cui economia e business<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-2" class="reference"><a href="#cite_note-2"><span class="cite-bracket">[</span>2<span class="cite-bracket">]</span></a></sup>, la <b>scalabilità</b> denota la capacità di un sistema di aumentare o diminuire la potenza di erogare il servizio al quale è destinato. In genere la scalabilità di un sistema si mette in atto in funzione delle <a href="/wiki/Necessit%C3%A0" title="Necessità">necessità</a> e/o della <a href="/wiki/Disponibilit%C3%A0" title="Disponibilità">disponibilità</a>. Un sistema che gode di questa proprietà viene detto <b>scalabile</b><sup id="cite_ref-3" class="reference"><a href="#cite_note-3"><span class="cite-bracket">[</span>3<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-4" class="reference"><a href="#cite_note-4"><span class="cite-bracket">[</span>4<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-5" class="reference"><a href="#cite_note-5"><span class="cite-bracket">[</span>5<span class="cite-bracket">]</span></a></sup>. Maggiore è la facilità con cui può essere modificato un sistema nella sua capacità di erogare il servizio al quale è destinato, maggiore è la sua scalabilità. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Descrizione">Descrizione</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Scalabilit%C3%A0&veaction=edit&section=1" title="Modifica la sezione Descrizione" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Scalabilit%C3%A0&action=edit&section=1" title="Edit section's source code: Descrizione"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Complex_systems_organizational_map.jpg" class="mw-file-description"><img alt="Una mappa visiva e organizzativa di sistemi complessi suddivisi in sette sottogruppi." src="//upload.wikimedia.org/wikipedia/commons/thumb/d/de/Complex_systems_organizational_map.jpg/220px-Complex_systems_organizational_map.jpg" decoding="async" width="220" height="220" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/d/de/Complex_systems_organizational_map.jpg/330px-Complex_systems_organizational_map.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/d/de/Complex_systems_organizational_map.jpg/440px-Complex_systems_organizational_map.jpg 2x" data-file-width="1142" data-file-height="1143" /></a><figcaption>Una mappa visiva e organizzativa di sistemi complessi suddivisi in sette sottogruppi.</figcaption></figure> <p>L'uso più tradizionale si riferisce alla scalabilità di <a href="/w/index.php?title=Carico_di_sistema&action=edit&redlink=1" class="new" title="Carico di sistema (la pagina non esiste)">carico</a>, ovvero alla capacità di un sistema di incrementare le proprie prestazioni (il proprio <i><a href="/wiki/Throughput" title="Throughput">throughput</a></i> nel caso di <a href="/w/index.php?title=Sistema_trasmissivo&action=edit&redlink=1" class="new" title="Sistema trasmissivo (la pagina non esiste)">sistemi trasmissivi</a>) se a tale sistema vengono fornite nuove <a href="/wiki/Risorsa_informatica" class="mw-redirect" title="Risorsa informatica">risorse</a> (per esempio, nel caso dell'<a href="/wiki/Hardware" title="Hardware">hardware</a>, maggiore potenza di <a href="/wiki/CPU" title="CPU">processore</a> o processori aggiuntivi). Quanto un determinato sistema sia scalabile dipende dalla sua <a href="/wiki/Architettura_software" class="mw-redirect" title="Architettura software">architettura software</a> e/o <a href="/wiki/Architettura_hardware" class="mw-redirect" title="Architettura hardware">architettura hardware</a>; per esempio, la presenza di uno o più <a href="/wiki/Collo_di_bottiglia_(ingegneria)" title="Collo di bottiglia (ingegneria)">colli di bottiglia</a> potrebbe rendere ininfluente l'aumento della <a href="/w/index.php?title=Potenza_di_calcolo&action=edit&redlink=1" class="new" title="Potenza di calcolo (la pagina non esiste)">potenza di calcolo</a> complessiva. Questa dipendenza dall'architettura vale anche, in termini generali, per le altre accezioni in cui si può intendere il termine "scalabile"<sup id="cite_ref-6" class="reference"><a href="#cite_note-6"><span class="cite-bracket">[</span>6<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-7" class="reference"><a href="#cite_note-7"><span class="cite-bracket">[</span>7<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-parallel_arch2_8-0" class="reference"><a href="#cite_note-parallel_arch2-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup>. </p> <div class="mw-heading mw-heading3"><h3 id="Classificazioni">Classificazioni</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Scalabilit%C3%A0&veaction=edit&section=2" title="Modifica la sezione Classificazioni" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Scalabilit%C3%A0&action=edit&section=2" title="Edit section's source code: Classificazioni"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Nel caso dei sistemi software, la scalabilità può essere intesa come capacità di crescita lungo tre dimensioni<sup id="cite_ref-parallel_arch2_8-1" class="reference"><a href="#cite_note-parallel_arch2-8"><span class="cite-bracket">[</span>8<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-9" class="reference"><a href="#cite_note-9"><span class="cite-bracket">[</span>9<span class="cite-bracket">]</span></a></sup><sup id="cite_ref-10" class="reference"><a href="#cite_note-10"><span class="cite-bracket">[</span>10<span class="cite-bracket">]</span></a></sup>. </p> <dl><dt>Scalabilità di carico</dt> <dd>Un sistema software dovrebbe aumentare le proprie prestazioni in funzione della potenza di calcolo complessiva richiesta al momento. Per i <a href="/wiki/Sistema_distribuito" title="Sistema distribuito">sistemi distribuiti</a>, di solito, l'enfasi viene posta sulla scalabilità rispetto al numero di processori invece della potenza dei singoli processori impiegati.</dd> <dt>Scalabilità geografica</dt> <dd>Un sistema geograficamente scalabile è quello che mantiene inalterata la sua <a href="/wiki/Usabilit%C3%A0" title="Usabilità">usabilità</a> e <a href="/wiki/Utilit%C3%A0" class="mw-disambig" title="Utilità">utilità</a> indipendentemente dalla <a href="/w/index.php?title=Distanza_fisica&action=edit&redlink=1" class="new" title="Distanza fisica (la pagina non esiste)">distanza fisica</a> dei suoi utenti o delle sue risorse.</dd> <dt>Scalabilità amministrativa</dt> <dd>Un sistema amministrativamente scalabile è quello che mantiene inalterata la sua <a href="/w/index.php?title=Gestibilit%C3%A0&action=edit&redlink=1" class="new" title="Gestibilità (la pagina non esiste)">gestibilità</a> indipendentemente da quante organizzazioni lo utilizzano.</dd></dl> <p>La scalabilità di carico può esplicarsi in <b>scalabilità verticale</b> (relativa all'aumento della capacità di elaborazione di una singola macchina) e <b>scalabilità orizzontale</b> (relativa all'aggiunta di altre macchine in <a href="/w/index.php?title=Distribuzione_di_carico&action=edit&redlink=1" class="new" title="Distribuzione di carico (la pagina non esiste)">distribuzione di carico</a>). </p> <div class="mw-heading mw-heading3"><h3 id="Esempi">Esempi</h3><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Scalabilit%C3%A0&veaction=edit&section=3" title="Modifica la sezione Esempi" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Scalabilit%C3%A0&action=edit&section=3" title="Edit section's source code: Esempi"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>La <i>scalabilità</i>, nelle sue varie forme, è un <a href="/w/index.php?title=Parametro_di_qualit%C3%A0&action=edit&redlink=1" class="new" title="Parametro di qualità (la pagina non esiste)">parametro di qualità</a> determinante in numerose famiglie di applicazioni software. Sistemi di <a href="/wiki/Online_transaction_processing" title="Online transaction processing">online transaction processing</a> o <a href="/wiki/Database_management_system" title="Database management system">DBMS</a>, per esempio, sono scalabili se possono essere messi in condizione di gestire più transazioni aggiungendo processori, <a href="/wiki/Memoria_(informatica)" title="Memoria (informatica)">memoria</a> o dispositivi. In questo caso, il sistema stesso si presta a essere utilizzato in contesti molto semplici o molto complessi senza che questo richieda una sua <a href="/wiki/Progettazione_(ingegneria_del_software)" title="Progettazione (ingegneria del software)">riprogettazione</a><sup id="cite_ref-11" class="reference"><a href="#cite_note-11"><span class="cite-bracket">[</span>11<span class="cite-bracket">]</span></a></sup>. </p><p>In alcuni contesti esistono definizioni specifiche, più formali, del concetto di scalabilità; un <a href="/wiki/Protocollo_di_routing" title="Protocollo di routing">protocollo di routing</a>, per esempio, si dice scalabile se la dimensione della <a href="/wiki/Tabella_di_routing" title="Tabella di routing">tabella di routing</a> di ogni <a href="/wiki/Nodo_(informatica)" title="Nodo (informatica)">nodo</a> cresce secondo un <a href="/wiki/O-grande" title="O-grande">O</a>(log <i>N</i>), dove <i>N</i> è il numero di nodi che compongono la <a href="/wiki/Rete_di_computer" title="Rete di computer">rete</a><sup id="cite_ref-12" class="reference"><a href="#cite_note-12"><span class="cite-bracket">[</span>12<span class="cite-bracket">]</span></a></sup>. </p> <div class="mw-heading mw-heading2"><h2 id="Note">Note</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Scalabilit%C3%A0&veaction=edit&section=4" title="Modifica la sezione Note" class="mw-editsection-visualeditor"><span>modifica</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Scalabilit%C3%A0&action=edit&section=4" title="Edit section's source code: Note"><span>modifica wikitesto</span></a><span class="mw-editsection-bracket">]</span></span></div> <div class="mw-references-wrap mw-references-columns"><ol class="references"> <li id="cite_note-1"><a href="#cite_ref-1"><b>^</b></a> <span class="reference-text"><cite class="citation web" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) <a rel="nofollow" class="external text" href="https://userguiding.com/blog/scalability/"><span style="font-style:italic;">Scalability 101 - How to Run a Scalable Business</span></a>, su <span style="font-style:italic;">UserGuiding</span>, 11 gennaio 2021. <small>URL consultato il 29 ottobre 2021</small>.</cite></span> </li> <li id="cite_note-2"><a href="#cite_ref-2"><b>^</b></a> <span class="reference-text"><cite class="citation web" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) <a rel="nofollow" class="external text" href="https://www.investopedia.com/terms/s/scalability.asp"><span style="font-style:italic;">Scalability: What It Is, and How It Works</span></a>, su <span style="font-style:italic;">Investopedia</span>. <small>URL consultato il 29 ottobre 2021</small>.</cite></span> </li> <li id="cite_note-3"><a href="#cite_ref-3"><b>^</b></a> <span class="reference-text"><cite class="citation web" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) <a rel="nofollow" class="external text" href="https://workforce.libretexts.org/Bookshelves/Information_Technology/Information_Technology_Hardware/Advanced_Computer_Organization_Architecture_(Njoroge)/02%3A_Multiprocessing/2.01%3A_The_Amdahl%27s_law"><span style="font-style:italic;">2.1: The Amdahl's law</span></a>, su <span style="font-style:italic;">Workforce LibreTexts</span>, 5 marzo 2021. <small>URL consultato il 29 ottobre 2021</small>.</cite></span> </li> <li id="cite_note-4"><a href="#cite_ref-4"><b>^</b></a> <span class="reference-text"><cite class="citation news" style="font-style:normal">(<span style="font-weight:bolder; font-size:80%"><abbr title="inglese">EN</abbr></span>) <a rel="nofollow" class="external text" href="https://www.networkworld.com/article/3199205/why-web-scale-is-the-future.html"><span style="font-style:italic;">Why web-scale is the future</span></a>, in <span style="font-style:italic;">Network World</span>, 13 febbraio 2020. <small>URL consultato il 1º giugno 2017</small>.</cite></span> </li> <li id="cite_note-5"><a href="#cite_ref-5"><b>^</b></a> <span class="reference-text"><cite class="citation web" style="font-style:normal"> <a rel="nofollow" class="external text" href="https://www.computersemplice.it/cosa-significa-scalabilita/"><span style="font-style:italic;">Cosa significa scalabilità? – Computer semplice</span></a> <style data-mw-deduplicate="TemplateStyles:r140554517">.mw-parser-output .chiarimento{background:#ffeaea;color:#444444}.mw-parser-output .chiarimento-apice{color:#EE0700}@media screen{html.skin-theme-clientpref-night .mw-parser-output .chiarimento{background:rgba(179,36,36,0.21);color:inherit}html.skin-theme-clientpref-night .mw-parser-output .chiarimento-apice{color:#b32424}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .chiarimento{background:rgba(179,36,36,0.21);color:inherit}html.skin-theme-clientpref-os .mw-parser-output .chiarimento-apice{color:#b32424}}</style><span class="chiarimento" title="A volte può capitare che un link presente su Wikipedia non sia più raggiungibile. Se possibile ritrova il link e inserisci il collegamento corretto, comunque non rimuovere il collegamento e inserisci il template {{Collegamento interrotto}}"></span><sup class="noprint chiarimento-apice" title="A volte può capitare che un link presente su Wikipedia non sia più raggiungibile. Se possibile ritrova il link e inserisci il collegamento corretto, comunque non rimuovere il collegamento e inserisci il template {{Collegamento interrotto}}">[<i><a href="/wiki/Aiuto:Collegamenti_interrotti" title="Aiuto:Collegamenti interrotti">collegamento interrotto</a></i>]</sup>, su <span style="font-style:italic;">computersemplice.it</span>. <small>URL consultato il 29 ottobre 2021</small>.</cite></span> </li> <li id="cite_note-6"><a href="#cite_ref-6"><b>^</b></a> <span class="reference-text"><cite class="citation pubblicazione" style="font-style:normal"> Mark D. Hill, <a rel="nofollow" class="external text" href="http://digital.library.wisc.edu/1793/9676"><span style="font-style:italic;">What is scalability?</span></a>, in <span style="font-style:italic;">ACM SIGARCH Computer Architecture News</span>, vol. 18, n. 4, 1990, p. 18, <a href="/wiki/Digital_object_identifier" title="Digital object identifier">DOI</a>:<a rel="nofollow" class="external text" href="https://dx.doi.org/10.1145%2F121973.121975">10.1145/121973.121975</a>.</cite> e <cite class="citation conferenza" style="font-style:normal"> Leticia Duboc, David S. Rosenblum e Tony Wicks, <a rel="nofollow" class="external text" href="http://discovery.ucl.ac.uk/4990/1/4990.pdf"><span style="font-style:italic;">A framework for modelling and analysis of software systems scalability</span></a> (<span style="font-weight: bolder; font-size:80%"><abbr title="documento in formato PDF">PDF</abbr></span>), <span style="font-style:italic;">Proceedings of the 28th international conference on Software engineering – ICSE '06</span>, 2006, p. 949, <a href="/wiki/Digital_object_identifier" title="Digital object identifier">DOI</a>:<a rel="nofollow" class="external text" href="https://dx.doi.org/10.1145%2F1134285.1134460">10.1145/1134285.1134460</a>, <a href="/wiki/ISBN" title="ISBN">ISBN</a> <a href="/wiki/Speciale:RicercaISBN/1595933751" title="Speciale:RicercaISBN/1595933751">1595933751</a>.</cite></span> </li> <li id="cite_note-7"><a href="#cite_ref-7"><b>^</b></a> <span class="reference-text"><cite class="citation libro" style="font-style:normal"> Kenneth Craig Laudon e Carol Guercio Traver, <span style="font-style:italic;">E-commerce: Business, Technology, Society</span>, Pearson Prentice Hall/Pearson Education, 2008, <a href="/wiki/ISBN" title="ISBN">ISBN</a> <a href="/wiki/Speciale:RicercaISBN/9780136006459" title="Speciale:RicercaISBN/9780136006459">9780136006459</a>.</cite></span> </li> <li id="cite_note-parallel_arch2-8"><span class="mw-cite-backlink"><b>^</b> <sup><i><a href="#cite_ref-parallel_arch2_8-0">a</a></i></sup> <sup><i><a href="#cite_ref-parallel_arch2_8-1">b</a></i></sup></span> <span class="reference-text"><cite class="citation libro" style="font-style:normal"> Hesham El-Rewini and Mostafa Abd-El-Barr, <a rel="nofollow" class="external text" href="https://books.google.com/books?id=7JB-u6D5Q7kC&q=parallel+architectures+scalability&pg=PA63"><span style="font-style:italic;">Advanced Computer Architecture and Parallel Processing</span></a>, John Wiley & Sons, aprile 2005, p. 66, <a href="/wiki/ISBN" title="ISBN">ISBN</a> <a href="/wiki/Speciale:RicercaISBN/978-0-471-47839-3" title="Speciale:RicercaISBN/978-0-471-47839-3">978-0-471-47839-3</a>.</cite></span> </li> <li id="cite_note-9"><a href="#cite_ref-9"><b>^</b></a> <span class="reference-text"><cite class="citation conferenza" style="font-style:normal"> Maged Michael, Jose E. Moreira, Doron Shiloach e Robert W. Wisniewski, <span style="font-style:italic;">Scale-up x Scale-out: A Case Study using Nutch/Lucene</span>, <span style="font-style:italic;">2007 IEEE International Parallel and Distributed Processing Symposium</span>, 26 marzo 2007, p. 1, <a href="/wiki/Digital_object_identifier" title="Digital object identifier">DOI</a>:<a rel="nofollow" class="external text" href="https://dx.doi.org/10.1109%2FIPDPS.2007.370631">10.1109/IPDPS.2007.370631</a>, <a href="/wiki/ISBN" title="ISBN">ISBN</a> <a href="/wiki/Speciale:RicercaISBN/978-1-4244-0909-9" title="Speciale:RicercaISBN/978-1-4244-0909-9">978-1-4244-0909-9</a>.</cite></span> </li> <li id="cite_note-10"><a href="#cite_ref-10"><b>^</b></a> <span class="reference-text"><cite class="citation web" style="font-style:normal"> <a rel="nofollow" class="external text" href="https://vitolavecchia.altervista.org/differenza-tra-scalabilita-verticale-scale-up-e-scalabilita-orizzontale-scale-out/"><span style="font-style:italic;">Differenza tra scalabilità verticale (scale up) e scalabilità orizzontale (scale out)</span></a>, su <span style="font-style:italic;">Informatica e Ingegneria Online</span>, 11 novembre 2020. <small>URL consultato il 29 ottobre 2021</small>.</cite></span> </li> <li id="cite_note-11"><a href="#cite_ref-11"><b>^</b></a> <span class="reference-text"><cite class="citation web" style="font-style:normal"> Lucio Benfante, <a rel="nofollow" class="external text" href="https://www.html.it/pag/31719/web-database-e-dbms/"><span style="font-style:italic;">DBMS: cos'è e come funziona un sistema di gestione Database</span></a>, su <span style="font-style:italic;">HTML.it</span>. <small>URL consultato il 29 ottobre 2021</small>.</cite></span> </li> <li id="cite_note-12"><a href="#cite_ref-12"><b>^</b></a> <span class="reference-text"><cite class="citation web" style="font-style:normal">(<span style="font-weight:bolder; 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