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Format</span></a><li class="theme-doc-sidebar-item-link theme-doc-sidebar-item-link-level-3 menu__list-item"><a class=menu__link tabindex=0 href=/docs/0.16/guide/xlang/troubleshooting><span title=Troubleshooting class=linkLabel_WmDU>Troubleshooting</span></a></ul><li class="theme-doc-sidebar-item-link theme-doc-sidebar-item-link-level-2 menu__list-item"><a class=menu__link tabindex=0 href=/docs/0.16/guide/serialization><span title="GraalVM Guide" class=linkLabel_WmDU>GraalVM Guide</span></a><li class="theme-doc-sidebar-item-link theme-doc-sidebar-item-link-level-2 menu__list-item"><a class=menu__link tabindex=0 href=/docs/0.16/guide/development><span title=Development class=linkLabel_WmDU>Development</span></a></ul></ul></nav></div></div></aside><main class=docMainContainer_TBSr><div class="container padding-top--md padding-bottom--lg"><div class=row><div class="col docItemCol_VOVn"><div class="theme-doc-version-banner alert alert--warning margin-bottom--md" role=alert><div>This is documentation for <!-- -->Apache Fory™<!-- --> <b>0.16</b>, which is no longer actively maintained.</div><div class=margin-top--md>For up-to-date documentation, see the <b><a href=/docs/guide/xlang/>latest version</a></b> (<!-- -->1.3.0<!-- -->).</div></div><div class=docItemContainer_Djhp><article><nav class="theme-doc-breadcrumbs breadcrumbsContainer_Z_bl" aria-label=Breadcrumbs><ul class=breadcrumbs><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 /></svg></a><li class=breadcrumbs__item><span class=breadcrumbs__link>Guide</span><li class="breadcrumbs__item breadcrumbs__item--active"><span class=breadcrumbs__link>Cross Language</span></ul></nav><span class="theme-doc-version-badge badge badge--secondary">Version: 0.16</span><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"><header><h1>Cross-Language Serialization Guide</h1></header><p>Apache Fory™ xlang (cross-language) serialization enables seamless data exchange between different programming languages. Serialize data in one language and deserialize it in another without manual data conversion. You can use either direct native types (no IDL) or a schema-first Fory IDL workflow.</p> |
| <h2 class="anchor anchorTargetStickyNavbar_Vzrq" id=features>Features<a href=#features class=hash-link aria-label="Direct link to Features" title="Direct link to Features" translate=no></a></h2> |
| <ul> |
| <li class=""><strong>No IDL Required</strong>: Serialize objects directly with native language types</li> |
| <li class=""><strong>Multi-Language Support</strong>: Java, Python, C++, Go, Rust, JavaScript all interoperate seamlessly</li> |
| <li class=""><strong>Reference Support</strong>: Shared and circular references work across language boundaries</li> |
| <li class=""><strong>Schema Evolution</strong>: Forward/backward compatibility when class definitions change</li> |
| <li class=""><strong>Zero-Copy</strong>: Out-of-band serialization for large binary data</li> |
| <li class=""><strong>High Performance</strong>: JIT compilation and optimized binary protocol</li> |
| </ul> |
| <h2 class="anchor anchorTargetStickyNavbar_Vzrq" 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> |
| <table><thead><tr><th>Language<th>Status<th>Package<tbody><tr><td>Java<td>✅<td><code>org.apache.fory:fory-core</code><tr><td>Python<td>✅<td><code>pyfory</code><tr><td>C++<td>✅<td>Bazel/CMake build<tr><td>Go<td>✅<td><code>github.com/apache/fory/go/fory</code><tr><td>Rust<td>✅<td><code>fory</code> crate<tr><td>JavaScript<td>✅<td><code>@apache-fory/fory</code></table> |
| <h2 class="anchor anchorTargetStickyNavbar_Vzrq" id=when-to-use-xlang-mode>When to Use Xlang Mode<a href=#when-to-use-xlang-mode class=hash-link aria-label="Direct link to When to Use Xlang Mode" title="Direct link to When to Use Xlang Mode" translate=no></a></h2> |
| <p><strong>Use xlang mode when:</strong></p> |
| <ul> |
| <li class="">Building multi-language microservices</li> |
| <li class="">Creating polyglot data pipelines</li> |
| <li class="">Sharing data between frontend (JavaScript) and backend (Java/Python/Go)</li> |
| </ul> |
| <p><strong>Use language-native mode when:</strong></p> |
| <ul> |
| <li class="">All serialization/deserialization happens in the same language</li> |
| <li class="">Maximum performance is required (native mode is faster)</li> |
| <li class="">You need language-specific features (Python pickle compatibility, Java serialization hooks)</li> |
| </ul> |
| <h2 class="anchor anchorTargetStickyNavbar_Vzrq" id=quick-example>Quick Example<a href=#quick-example class=hash-link aria-label="Direct link to Quick Example" title="Direct link to Quick Example" translate=no></a></h2> |
| <h3 class="anchor anchorTargetStickyNavbar_Vzrq" id=java-producer>Java (Producer)<a href=#java-producer class=hash-link aria-label="Direct link to Java (Producer)" title="Direct link to Java (Producer)" translate=no></a></h3> |
| <div class="language-java codeBlockContainer_Ckt0 theme-code-block" style=--prism-color:#393A34;--prism-background-color:#f6f8fa><div class=codeBlockContent_QJqH><pre tabindex=0 class="prism-code language-java codeBlock_bY9V thin-scrollbar" style=color:#393A34;background-color:#f6f8fa><code class=codeBlockLines_e6Vv><div class=token-line style=color:#393A34><span class="token keyword" style=color:#00009f>import</span><span class="token plain"> </span><span class="token import namespace" style=opacity:0.7>org</span><span class="token import namespace punctuation" style=opacity:0.7;color:#393A34>.</span><span class="token import namespace" style=opacity:0.7>apache</span><span class="token import namespace punctuation" style=opacity:0.7;color:#393A34>.</span><span class="token import namespace" style=opacity:0.7>fory</span><span class="token import namespace punctuation" style=opacity:0.7;color:#393A34>.</span><span class="token import operator" style=color:#393A34>*</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token keyword" style=color:#00009f>import</span><span class="token plain"> </span><span class="token import namespace" style=opacity:0.7>org</span><span class="token import namespace punctuation" style=opacity:0.7;color:#393A34>.</span><span class="token import namespace" style=opacity:0.7>apache</span><span class="token import namespace punctuation" style=opacity:0.7;color:#393A34>.</span><span class="token import namespace" style=opacity:0.7>fory</span><span class="token import namespace punctuation" style=opacity:0.7;color:#393A34>.</span><span class="token import namespace" style=opacity:0.7>config</span><span class="token import namespace punctuation" style=opacity:0.7;color:#393A34>.</span><span class="token import operator" style=color:#393A34>*</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain" style=display:inline-block></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token keyword" style=color:#00009f>public</span><span class="token plain"> </span><span class="token keyword" style=color:#00009f>class</span><span class="token plain"> </span><span class="token class-name">Person</span><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>{</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token keyword" style=color:#00009f>public</span><span class="token plain"> </span><span class="token class-name">String</span><span class="token plain"> name</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token keyword" style=color:#00009f>public</span><span class="token plain"> </span><span class="token keyword" style=color:#00009f>int</span><span class="token plain"> age</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token punctuation" style=color:#393A34>}</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain" style=display:inline-block></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token class-name">Fory</span><span class="token plain"> fory </span><span class="token operator" style=color:#393A34>=</span><span class="token plain"> </span><span class="token class-name">Fory</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>builder</span><span class="token punctuation" style=color:#393A34>(</span><span class="token punctuation" style=color:#393A34>)</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>withLanguage</span><span class="token punctuation" style=color:#393A34>(</span><span class="token class-name">Language</span><span class="token punctuation" style=color:#393A34>.</span><span class="token constant" style=color:#36acaa>XLANG</span><span class="token punctuation" style=color:#393A34>)</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>build</span><span class="token punctuation" style=color:#393A34>(</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain">fory</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>register</span><span class="token punctuation" style=color:#393A34>(</span><span class="token class-name">Person</span><span class="token punctuation" style=color:#393A34>.</span><span class="token keyword" style=color:#00009f>class</span><span class="token punctuation" style=color:#393A34>,</span><span class="token plain"> </span><span class="token string" style=color:#e3116c>"example.Person"</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain" style=display:inline-block></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token class-name">Person</span><span class="token plain"> person </span><span class="token operator" style=color:#393A34>=</span><span class="token plain"> </span><span class="token keyword" style=color:#00009f>new</span><span class="token plain"> </span><span class="token class-name">Person</span><span class="token punctuation" style=color:#393A34>(</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain">person</span><span class="token punctuation" style=color:#393A34>.</span><span class="token plain">name </span><span class="token operator" style=color:#393A34>=</span><span class="token plain"> </span><span class="token string" style=color:#e3116c>"Alice"</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain">person</span><span class="token punctuation" style=color:#393A34>.</span><span class="token plain">age </span><span class="token operator" style=color:#393A34>=</span><span class="token plain"> </span><span class="token number" style=color:#36acaa>30</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token keyword" style=color:#00009f>byte</span><span class="token punctuation" style=color:#393A34>[</span><span class="token punctuation" style=color:#393A34>]</span><span class="token plain"> bytes </span><span class="token operator" style=color:#393A34>=</span><span class="token plain"> fory</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>serialize</span><span class="token punctuation" style=color:#393A34>(</span><span class="token plain">person</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token comment" style=color:#999988;font-style:italic>// Send bytes to Python, Go, Rust, etc.</span><br/></div></code></pre></div></div> |
| <h3 class="anchor anchorTargetStickyNavbar_Vzrq" id=python-consumer>Python (Consumer)<a href=#python-consumer class=hash-link aria-label="Direct link to Python (Consumer)" title="Direct link to Python (Consumer)" translate=no></a></h3> |
| <div class="language-python codeBlockContainer_Ckt0 theme-code-block" style=--prism-color:#393A34;--prism-background-color:#f6f8fa><div class=codeBlockContent_QJqH><pre tabindex=0 class="prism-code language-python codeBlock_bY9V thin-scrollbar" style=color:#393A34;background-color:#f6f8fa><code class=codeBlockLines_e6Vv><div class=token-line style=color:#393A34><span class="token keyword" style=color:#00009f>import</span><span class="token plain"> pyfory</span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token keyword" style=color:#00009f>from</span><span class="token plain"> dataclasses </span><span class="token keyword" style=color:#00009f>import</span><span class="token plain"> dataclass</span><br/></div><div class=token-line style=color:#393A34><span class="token plain" style=display:inline-block></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token decorator annotation punctuation" style=color:#393A34>@dataclass</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token keyword" style=color:#00009f>class</span><span class="token plain"> </span><span class="token class-name">Person</span><span class="token punctuation" style=color:#393A34>:</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> name</span><span class="token punctuation" style=color:#393A34>:</span><span class="token plain"> </span><span class="token builtin">str</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> age</span><span class="token punctuation" style=color:#393A34>:</span><span class="token plain"> pyfory</span><span class="token punctuation" style=color:#393A34>.</span><span class="token plain">Int32Type</span><br/></div><div class=token-line style=color:#393A34><span class="token plain" style=display:inline-block></span><br/></div><div class=token-line style=color:#393A34><span class="token plain">fory </span><span class="token operator" style=color:#393A34>=</span><span class="token plain"> pyfory</span><span class="token punctuation" style=color:#393A34>.</span><span class="token plain">Fory</span><span class="token punctuation" style=color:#393A34>(</span><span class="token plain">xlang</span><span class="token operator" style=color:#393A34>=</span><span class="token boolean" style=color:#36acaa>True</span><span class="token punctuation" style=color:#393A34>)</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain">fory</span><span class="token punctuation" style=color:#393A34>.</span><span class="token plain">register_type</span><span class="token punctuation" style=color:#393A34>(</span><span class="token plain">Person</span><span class="token punctuation" style=color:#393A34>,</span><span class="token plain"> typename</span><span class="token operator" style=color:#393A34>=</span><span class="token string" style=color:#e3116c>"example.Person"</span><span class="token punctuation" style=color:#393A34>)</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain" style=display:inline-block></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token comment" style=color:#999988;font-style:italic># Receive bytes from Java</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain">person </span><span class="token operator" style=color:#393A34>=</span><span class="token plain"> fory</span><span class="token punctuation" style=color:#393A34>.</span><span class="token plain">deserialize</span><span class="token punctuation" style=color:#393A34>(</span><span class="token plain">bytes_from_java</span><span class="token punctuation" style=color:#393A34>)</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token keyword" style=color:#00009f>print</span><span class="token punctuation" style=color:#393A34>(</span><span class="token string-interpolation string" style=color:#e3116c>f"</span><span class="token string-interpolation interpolation punctuation" style=color:#393A34>{</span><span class="token string-interpolation interpolation">person</span><span class="token string-interpolation interpolation punctuation" style=color:#393A34>.</span><span class="token string-interpolation interpolation">name</span><span class="token string-interpolation interpolation punctuation" style=color:#393A34>}</span><span class="token string-interpolation string" style=color:#e3116c>, </span><span class="token string-interpolation interpolation punctuation" style=color:#393A34>{</span><span class="token string-interpolation interpolation">person</span><span class="token string-interpolation interpolation punctuation" style=color:#393A34>.</span><span class="token string-interpolation interpolation">age</span><span class="token string-interpolation interpolation punctuation" style=color:#393A34>}</span><span class="token string-interpolation string" style=color:#e3116c>"</span><span class="token punctuation" style=color:#393A34>)</span><span class="token plain"> </span><span class="token comment" style=color:#999988;font-style:italic># Alice, 30</span><br/></div></code></pre></div></div> |
| <h2 class="anchor anchorTargetStickyNavbar_Vzrq" id=fory-idl>Fory IDL<a href=#fory-idl class=hash-link aria-label="Direct link to Fory IDL" title="Direct link to Fory IDL" translate=no></a></h2> |
| <p>For schema-first projects, Fory also provides <strong>Fory IDL</strong> and code generation.</p> |
| <ul> |
| <li class="">Compiler docs: <a class="" href=/docs/0.16/compiler/>Fory IDL Overview</a></li> |
| <li class="">Best for large multi-language message contracts and long-lived schemas</li> |
| </ul> |
| <h3 class="anchor anchorTargetStickyNavbar_Vzrq" id=minimal-idl-example>Minimal IDL Example<a href=#minimal-idl-example class=hash-link aria-label="Direct link to Minimal IDL Example" title="Direct link to Minimal IDL Example" translate=no></a></h3> |
| <p>Create <code>person.fdl</code>:</p> |
| <div class="language-protobuf codeBlockContainer_Ckt0 theme-code-block" style=--prism-color:#393A34;--prism-background-color:#f6f8fa><div class=codeBlockContent_QJqH><pre tabindex=0 class="prism-code language-protobuf codeBlock_bY9V thin-scrollbar" style=color:#393A34;background-color:#f6f8fa><code class=codeBlockLines_e6Vv><div class=token-line style=color:#393A34><span class="token keyword" style=color:#00009f>package</span><span class="token plain"> example</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain" style=display:inline-block></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token keyword" style=color:#00009f>message</span><span class="token plain"> </span><span class="token class-name">Person</span><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>{</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token builtin">string</span><span class="token plain"> name </span><span class="token operator" style=color:#393A34>=</span><span class="token plain"> </span><span class="token number" style=color:#36acaa>1</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token builtin">int32</span><span class="token plain"> age </span><span class="token operator" style=color:#393A34>=</span><span class="token plain"> </span><span class="token number" style=color:#36acaa>2</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token keyword" style=color:#00009f>optional</span><span class="token plain"> </span><span class="token builtin">string</span><span class="token plain"> email </span><span class="token operator" style=color:#393A34>=</span><span class="token plain"> </span><span class="token number" style=color:#36acaa>3</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token punctuation" style=color:#393A34>}</span><br/></div></code></pre></div></div> |
| <p>Generate code:</p> |
| <div class="language-bash codeBlockContainer_Ckt0 theme-code-block" style=--prism-color:#393A34;--prism-background-color:#f6f8fa><div class=codeBlockContent_QJqH><pre tabindex=0 class="prism-code language-bash codeBlock_bY9V thin-scrollbar" style=color:#393A34;background-color:#f6f8fa><code class=codeBlockLines_e6Vv><div class=token-line style=color:#393A34><span class="token plain">foryc person.fdl </span><span class="token parameter variable" style=color:#36acaa>--lang</span><span class="token plain"> java,python,go,rust,cpp </span><span class="token parameter variable" style=color:#36acaa>--output</span><span class="token plain"> ./generated</span><br/></div></code></pre></div></div> |
| <p>This generates native language types with consistent field/type mappings across all targets.</p> |
| <h2 class="anchor anchorTargetStickyNavbar_Vzrq" id=when-to-fory-idl>When to Fory IDL<a href=#when-to-fory-idl class=hash-link aria-label="Direct link to When to Fory IDL" title="Direct link to When to Fory IDL" translate=no></a></h2> |
| <table><thead><tr><th>Option<th>Use When<th>Why<tbody><tr><td>Native xlang types (no IDL)<td>You only have a few message types and want to move quickly<td>Avoids the integration/setup cost of introducing and operating the compiler<tr><td>Fory IDL (schema-first + codegen)<td>You have many messages across multiple languages/teams/services<td>Provides a single contract, stronger consistency, and easier long-term evolution<tr><td>Hybrid (start native, move to IDL)<td>Project starts small but message count and cross-team dependency grows<td>Lets you keep early velocity, then standardize once schema complexity increases</table> |
| <h2 class="anchor anchorTargetStickyNavbar_Vzrq" id=documentation>Documentation<a href=#documentation class=hash-link aria-label="Direct link to Documentation" title="Direct link to Documentation" translate=no></a></h2> |
| <table><thead><tr><th>Topic<th>Description<tbody><tr><td><a class="" href=/docs/0.16/guide/xlang/getting_started>Getting Started</a><td>Installation and basic setup for all languages<tr><td><a class="" href=/docs/0.16/specification/xlang_type_mapping>Type Mapping</a><td>Cross-language type mapping reference<tr><td><a class="" href=/docs/0.16/guide/xlang/serialization>Serialization</a><td>Built-in types, custom types, reference handling<tr><td><a class="" href=/docs/0.16/guide/xlang/zero_copy>Zero-Copy</a><td>Out-of-band serialization for large data<tr><td><a class="" href=/docs/0.16/guide/xlang/row_format>Row Format</a><td>Cache-friendly binary format with random access<tr><td><a class="" href=/docs/0.16/guide/xlang/troubleshooting>Troubleshooting</a><td>Common issues and solutions</table> |
| <h2 class="anchor anchorTargetStickyNavbar_Vzrq" id=language-specific-guides>Language-Specific Guides<a href=#language-specific-guides class=hash-link aria-label="Direct link to Language-Specific Guides" title="Direct link to Language-Specific Guides" translate=no></a></h2> |
| <p>For language-specific details and API reference:</p> |
| <ul> |
| <li class=""><a class="" href=/docs/0.16/guide/java/cross_language>Java Cross-Language Guide</a></li> |
| <li class=""><a class="" href=/docs/0.16/guide/python/cross_language>Python Cross-Language Guide</a></li> |
| <li class=""><a class="" href=/docs/0.16/guide/cpp/cross_language>C++ Cross-Language Guide</a></li> |
| <li class=""><a class="" href=/docs/0.16/guide/rust/cross_language>Rust Cross-Language Guide</a></li> |
| </ul> |
| <h2 class="anchor anchorTargetStickyNavbar_Vzrq" id=specifications>Specifications<a href=#specifications class=hash-link aria-label="Direct link to Specifications" title="Direct link to Specifications" translate=no></a></h2> |
| <ul> |
| <li class=""><a class="" href=/docs/0.16/specification/xlang_serialization_spec>Xlang Serialization Specification</a> - Binary protocol details</li> |
| <li class=""><a class="" href=/docs/0.16/specification/xlang_type_mapping>Type Mapping Specification</a> - Complete type mapping reference</li> |
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