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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">Server Module Languages</span></li><li class="breadcrumbs__item breadcrumbs__item--active"><span class="breadcrumbs__link">Overview</span></li></ul></nav><div class="tocCollapsible_dqme theme-doc-toc-mobile tocMobile_Z34P"><button type="button" class="clean-btn tocCollapsibleButton_QMSE">On this page</button></div><div class="theme-doc-markdown markdown"><header><h1>Server Module Overview</h1></header>
<p>Server modules are the core of a SpacetimeDB application. They define the structure of the database and the server-side logic that processes and handles client requests. These functions are called reducers and are transactional, meaning they ensure data consistency and integrity. Reducers can perform operations such as inserting, updating, and deleting data in the database.</p>
<p>In the following sections, we&#x27;ll cover the basics of server modules and how to create and deploy them.</p>
<h2 class="anchor anchorWithStickyNavbar_wKCU" id="supported-languages">Supported Languages<a href="#supported-languages" class="hash-link" aria-label="Direct link to Supported Languages" title="Direct link to Supported Languages" translate="no">​</a></h2>
<h3 class="anchor anchorWithStickyNavbar_wKCU" id="rust">Rust<a href="#rust" class="hash-link" aria-label="Direct link to Rust" title="Direct link to Rust" translate="no">​</a></h3>
<p>Rust is the only fully supported language for server modules. Rust is a great option for server modules because it is fast, safe, and has a small runtime.</p>
<ul>
<li><a href="/modules/rust">Rust Module Reference</a></li>
<li><a href="/modules/rust/quickstart">Rust Module Quickstart Guide</a></li>
</ul>
<h3 class="anchor anchorWithStickyNavbar_wKCU" id="c">C<a href="#c" class="hash-link" aria-label="Direct link to C" title="Direct link to C" translate="no">​</a></h3>
<p>We have C# support available. C# can be a good choice for developers who are already using Unity or .net for their client applications.</p>
<ul>
<li><a href="/modules/c-sharp">C# Module Reference</a></li>
<li><a href="/modules/c-sharp/quickstart">C# Module Quickstart Guide</a></li>
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