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class="docItemContainer_Djhp"><article><nav class="theme-doc-breadcrumbs breadcrumbsContainer_Z_bl" aria-label="Breadcrumbs"><ul class="breadcrumbs" itemscope="" itemtype="https://schema.org/BreadcrumbList"><li class="breadcrumbs__item"><a aria-label="Home page" class="breadcrumbs__link" href="/"><svg viewBox="0 0 24 24" class="breadcrumbHomeIcon_YNFT"><path d="M10 19v-5h4v5c0 .55.45 1 1 1h3c.55 0 1-.45 1-1v-7h1.7c.46 0 .68-.57.33-.87L12.67 3.6c-.38-.34-.96-.34-1.34 0l-8.36 7.53c-.34.3-.13.87.33.87H5v7c0 .55.45 1 1 1h3c.55 0 1-.45 1-1z" fill="currentColor"></path></svg></a></li><li class="breadcrumbs__item"><span class="breadcrumbs__link">RPC</span><meta itemprop="position" content="1"></li><li itemscope="" itemprop="itemListElement" itemtype="https://schema.org/ListItem" class="breadcrumbs__item breadcrumbs__item--active"><span class="breadcrumbs__link" itemprop="name">Overview</span><meta itemprop="position" content="2"></li></ul></nav><div class="tocCollapsible_ETCw theme-doc-toc-mobile tocMobile_ITEo"><button type="button" class="clean-btn tocCollapsibleButton_TO0P">On this page</button></div><div class="theme-doc-markdown markdown"><h1>Overview</h1>
<p>ActiveJ RPC is a lightweight and easy-to-use Java library for developing <strong>high-load distributed applications</strong> and Memcached-like solutions. It <strong>overcomes the overheads</strong> of using JSON or XML encoding over HTTP. ActiveJ RPC is powered by one of the fastest JVM serializers (<a href="/serializer">ActiveJ Serializer</a>), runs on TCP, supports request pipelining and has itw own <strong>high-performance binary streaming protocol</strong>. Along with that, ActiveJ RPC uses Datastream module for asynchronous data processing and back-pressure control. It also has built-in commonly used RPC <strong>strategies and high fault tolerance</strong>.</p>
<h2 class="anchor anchorWithStickyNavbar_LWe7" id="why-activej-rpc">Why ActiveJ RPC?<a href="#why-activej-rpc" class="hash-link" aria-label="Direct link to Why ActiveJ RPC?" title="Direct link to Why ActiveJ RPC?"></a></h2>
<ul>
<li>Performance of up to ~15M requests per second on a single CPU core</li>
<li>A simple API for defining client and server message handlers</li>
<li>A wide range of RPC strategies (first available, round-robin, rendezvous hashing, etc.) that can be easily combined</li>
<li>Custom fast data streaming protocol</li>
<li>Utilizes ActiveJ's <strong><a href="/async-io/datastream">Datastream</a>, <a href="/async-io/net">Net</a></strong> and <strong><a href="/serializer">Serializer</a></strong> modules to achieve high performance</li>
<li>Fault tolerance with reconnections to fallback and replica servers</li>
<li>Built-in support for message pipelining</li>
<li>Ideal for near-real-time servers with application-specific business logic</li>
<li>Tested in a high-load production environment</li>
</ul>
<h2 class="anchor anchorWithStickyNavbar_LWe7" id="asynchronous-binary-rpc-protocol-with-extensive-cloud-strategies">Asynchronous binary RPC protocol with extensive cloud strategies<a href="#asynchronous-binary-rpc-protocol-with-extensive-cloud-strategies" class="hash-link" aria-label="Direct link to Asynchronous binary RPC protocol with extensive cloud strategies" title="Direct link to Asynchronous binary RPC protocol with extensive cloud strategies"></a></h2>
<p>ActiveJ RPC features highly optimized flexible server and client implementations, as well as predefined cloud strategies. Even <strong>complex, scalable solutions</strong> such as <strong>high-performance microservices or Memcached-like</strong> servers can be conveniently built with these technologies.</p>
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242)">}</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain" style="display:inline-block"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token annotation punctuation" style="color:rgb(248, 248, 242)">@Provides</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token class-name">IRpcClient</span><span class="token plain"> </span><span class="token function" style="color:rgb(80, 250, 123)">rpcClient</span><span class="token punctuation" style="color:rgb(248, 248, 242)">(</span><span class="token class-name">NioReactor</span><span class="token plain"> reactor</span><span class="token punctuation" style="color:rgb(248, 248, 242)">)</span><span class="token plain"> </span><span class="token punctuation" style="color:rgb(248, 248, 242)">{</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">return</span><span class="token plain"> </span><span class="token class-name">RpcClient</span><span class="token punctuation" style="color:rgb(248, 248, 242)">.</span><span class="token function" style="color:rgb(80, 250, 123)">builder</span><span class="token punctuation" style="color:rgb(248, 248, 242)">(</span><span class="token plain">reactor</span><span class="token punctuation" style="color:rgb(248, 248, 242)">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token punctuation" style="color:rgb(248, 248, 242)">.</span><span class="token function" style="color:rgb(80, 250, 123)">withMessageTypes</span><span class="token punctuation" style="color:rgb(248, 248, 242)">(</span><span class="token class-name">String</span><span class="token punctuation" style="color:rgb(248, 248, 242)">.</span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">class</span><span class="token punctuation" style="color:rgb(248, 248, 242)">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token punctuation" style="color:rgb(248, 248, 242)">.</span><span class="token function" style="color:rgb(80, 250, 123)">withStrategy</span><span class="token punctuation" style="color:rgb(248, 248, 242)">(</span><span class="token function" style="color:rgb(80, 250, 123)">server</span><span class="token punctuation" style="color:rgb(248, 248, 242)">(</span><span class="token keyword" style="color:rgb(189, 147, 249);font-style:italic">new</span><span class="token plain"> </span><span class="token class-name">InetSocketAddress</span><span class="token punctuation" style="color:rgb(248, 248, 242)">(</span><span class="token constant" style="color:rgb(189, 147, 249)">SERVICE_PORT</span><span class="token punctuation" style="color:rgb(248, 248, 242)">)</span><span class="token punctuation" style="color:rgb(248, 248, 242)">)</span><span class="token punctuation" style="color:rgb(248, 248, 242)">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token punctuation" style="color:rgb(248, 248, 242)">.</span><span class="token function" style="color:rgb(80, 250, 123)">build</span><span class="token punctuation" style="color:rgb(248, 248, 242)">(</span><span class="token punctuation" style="color:rgb(248, 248, 242)">)</span><span class="token punctuation" style="color:rgb(248, 248, 242)">;</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"></span><span class="token punctuation" style="color:rgb(248, 248, 242)">}</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg viewBox="0 0 24 24" class="copyButtonIcon_y97N"><path fill="currentColor" d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg viewBox="0 0 24 24" class="copyButtonSuccessIcon_LjdS"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div>
<div class="language-java codeBlockContainer_Ckt0 theme-code-block" style="--prism-color:#F8F8F2;--prism-background-color:#282A36"><div class="codeBlockContent_biex"><pre tabindex="0" class="prism-code language-java codeBlock_bY9V thin-scrollbar" style="color:#F8F8F2;background-color:#282A36"><code class="codeBlockLines_e6Vv"><span class="token-line" style="color:#F8F8F2"><span class="token plain">rpcClient</span><span class="token punctuation" style="color:rgb(248, 248, 242)">.</span><span class="token function" style="color:rgb(80, 250, 123)">sendRequest</span><span class="token punctuation" style="color:rgb(248, 248, 242)">(</span><span class="token string" style="color:rgb(255, 121, 198)">"World"</span><span class="token punctuation" style="color:rgb(248, 248, 242)">)</span><span class="token plain"></span><br></span><span class="token-line" style="color:#F8F8F2"><span class="token plain"> </span><span class="token punctuation" style="color:rgb(248, 248, 242)">.</span><span class="token function" style="color:rgb(80, 250, 123)">whenResult</span><span class="token punctuation" style="color:rgb(248, 248, 242)">(</span><span class="token plain">response </span><span class="token operator">-></span><span class="token plain"> </span><span class="token class-name">System</span><span class="token punctuation" style="color:rgb(248, 248, 242)">.</span><span class="token plain">out</span><span class="token punctuation" style="color:rgb(248, 248, 242)">.</span><span class="token function" style="color:rgb(80, 250, 123)">println</span><span class="token punctuation" style="color:rgb(248, 248, 242)">(</span><span class="token plain">response</span><span class="token punctuation" style="color:rgb(248, 248, 242)">)</span><span class="token punctuation" style="color:rgb(248, 248, 242)">)</span><span class="token punctuation" style="color:rgb(248, 248, 242)">;</span><span class="token plain"> </span><span class="token comment" style="color:rgb(98, 114, 164)">// prints "Hello World"</span><br></span></code></pre><div class="buttonGroup__atx"><button type="button" aria-label="Copy code to clipboard" title="Copy" class="clean-btn"><span class="copyButtonIcons_eSgA" aria-hidden="true"><svg viewBox="0 0 24 24" class="copyButtonIcon_y97N"><path fill="currentColor" d="M19,21H8V7H19M19,5H8A2,2 0 0,0 6,7V21A2,2 0 0,0 8,23H19A2,2 0 0,0 21,21V7A2,2 0 0,0 19,5M16,1H4A2,2 0 0,0 2,3V17H4V3H16V1Z"></path></svg><svg viewBox="0 0 24 24" class="copyButtonSuccessIcon_LjdS"><path fill="currentColor" d="M21,7L9,19L3.5,13.5L4.91,12.09L9,16.17L19.59,5.59L21,7Z"></path></svg></span></button></div></div></div>
<h2 class="anchor anchorWithStickyNavbar_LWe7" id="add-activej-rpc-to-your-project">Add ActiveJ RPC to your project<a href="#add-activej-rpc-to-your-project" class="hash-link" aria-label="Direct link to Add ActiveJ RPC to your project" title="Direct link to Add ActiveJ RPC to your project"></a></h2>
<p>You can add ActiveJ RPC to your project by importing its Maven repository.
These docs cover the most recent release of ActiveJ RPC <strong>v6.0-beta2</strong> (see on <a href="https://github.com/activej/activej/tree/v6.0-beta2/cloud-rpc" target="_blank">Github</a> or <a href="https://mvnrepository.com/artifact/io.activej/activej-rpc" target="_blank" rel="noopener noreferrer">Maven</a>).</p></div></article><nav class="pagination-nav docusaurus-mt-lg" aria-label="Docs pages"><a class="pagination-nav__link pagination-nav__link--prev" href="/specializer/examples"><div class="pagination-nav__sublabel">Previous</div><div class="pagination-nav__label">Examples</div></a><a class="pagination-nav__link pagination-nav__link--next" href="/rpc/basic-examples"><div class="pagination-nav__sublabel">Next</div><div class="pagination-nav__label">Basic Examples</div></a></nav></div></div><div class="col col--3"><div class="tableOfContents_bqdL thin-scrollbar theme-doc-toc-desktop"><ul class="table-of-contents table-of-contents__left-border"><li><a href="#why-activej-rpc" class="table-of-contents__link toc-highlight">Why ActiveJ RPC?</a></li><li><a href="#asynchronous-binary-rpc-protocol-with-extensive-cloud-strategies" class="table-of-contents__link toc-highlight">Asynchronous binary RPC protocol with extensive cloud strategies</a></li><li><a href="#add-activej-rpc-to-your-project" class="table-of-contents__link toc-highlight">Add ActiveJ RPC to your project</a></li></ul></div></div></div></div></main></div></div></div><footer class="footer"><div class="container container-fluid"><div class="footer__bottom text--center"><div class="footer__copyright">Copyright © 2024 ActiveJ LLC. All Rights Reserved</div></div></div></footer></div>
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