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alert--warning margin-bottom--md" role=alert><div>This is unreleased documentation for <!-- -->Apache Fory™<!-- --> <b>dev</b> version.</div><div class=margin-top--md>For up-to-date documentation, see the <b><a href=/docs/guide/java/advanced_features>latest version</a></b> (<!-- -->1.5.0<!-- -->).</div></div><div class=docItemContainer_Djhp><article><span class="theme-doc-version-badge badge badge--secondary">Version: dev</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>Advanced Features</h1></header><p>This page covers advanced Java Fory features that are not part of first-use serialization. |
| Java native-mode zero-copy serialization is documented in <a class="" href=/docs/next/guide/java/native_serialization>Native Serialization</a>, and deep |
| copy semantics are documented in <a class="" href=/docs/next/guide/java/object_copy>Object Copy</a>.</p> |
| <h2 class="anchor anchorTargetStickyNavbar_Vzrq" id=memory-allocation-customization>Memory Allocation Customization<a href=#memory-allocation-customization class=hash-link aria-label="Direct link to Memory Allocation Customization" title="Direct link to Memory Allocation Customization" translate=no></a></h2> |
| <p>Fory provides a <code>MemoryAllocator</code> interface that allows you to customize how memory buffers are allocated and grown during serialization operations. This can be useful for performance optimization, memory pooling, or debugging memory usage.</p> |
| <h3 class="anchor anchorTargetStickyNavbar_Vzrq" id=memoryallocator-interface>MemoryAllocator Interface<a href=#memoryallocator-interface class=hash-link aria-label="Direct link to MemoryAllocator Interface" title="Direct link to MemoryAllocator Interface" translate=no></a></h3> |
| <p>The <code>MemoryAllocator</code> interface defines two key methods:</p> |
| <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>public</span><span class="token plain"> </span><span class="token keyword" style=color:#00009f>interface</span><span class="token plain"> </span><span class="token class-name">MemoryAllocator</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 comment" style=color:#999988;font-style:italic>/**</span><br/></div><div class=token-line style=color:#393A34><span class="token comment" style=color:#999988;font-style:italic> * Allocates a new MemoryBuffer with the specified initial capacity.</span><br/></div><div class=token-line style=color:#393A34><span class="token comment" style=color:#999988;font-style:italic> */</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token class-name">MemoryBuffer</span><span class="token plain"> </span><span class="token function" style=color:#d73a49>allocate</span><span class="token punctuation" style=color:#393A34>(</span><span class="token keyword" style=color:#00009f>int</span><span class="token plain"> initialCapacity</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 comment" style=color:#999988;font-style:italic>/**</span><br/></div><div class=token-line style=color:#393A34><span class="token comment" style=color:#999988;font-style:italic> * Grows an existing buffer to accommodate the new capacity.</span><br/></div><div class=token-line style=color:#393A34><span class="token comment" style=color:#999988;font-style:italic> * The implementation must grow the buffer in-place by modifying</span><br/></div><div class=token-line style=color:#393A34><span class="token comment" style=color:#999988;font-style:italic> * the existing buffer instance.</span><br/></div><div class=token-line style=color:#393A34><span class="token comment" style=color:#999988;font-style:italic> */</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>void</span><span class="token plain"> </span><span class="token function" style=color:#d73a49>grow</span><span class="token punctuation" style=color:#393A34>(</span><span class="token class-name">MemoryBuffer</span><span class="token plain"> buffer</span><span class="token punctuation" style=color:#393A34>,</span><span class="token plain"> </span><span class="token keyword" style=color:#00009f>int</span><span class="token plain"> newCapacity</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><br/></div></code></pre></div></div> |
| <h3 class="anchor anchorTargetStickyNavbar_Vzrq" id=using-custom-memory-allocators>Using Custom Memory Allocators<a href=#using-custom-memory-allocators class=hash-link aria-label="Direct link to Using Custom Memory Allocators" title="Direct link to Using Custom Memory Allocators" translate=no></a></h3> |
| <p>You can set a global memory allocator that will be used by all <code>MemoryBuffer</code> instances:</p> |
| <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 comment" style=color:#999988;font-style:italic>// Create a custom allocator</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token class-name">MemoryAllocator</span><span class="token plain"> customAllocator </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">MemoryAllocator</span><span class="token punctuation" style=color:#393A34>(</span><span class="token punctuation" style=color:#393A34>)</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 annotation punctuation" style=color:#393A34>@Override</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">MemoryBuffer</span><span class="token plain"> </span><span class="token function" style=color:#d73a49>allocate</span><span class="token punctuation" style=color:#393A34>(</span><span class="token keyword" style=color:#00009f>int</span><span class="token plain"> initialCapacity</span><span class="token punctuation" style=color:#393A34>)</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 comment" style=color:#999988;font-style:italic>// Add extra capacity for debugging or pooling</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>return</span><span class="token plain"> </span><span class="token class-name">MemoryBuffer</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>fromByteArray</span><span class="token punctuation" style=color:#393A34>(</span><span class="token keyword" style=color:#00009f>new</span><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 plain">initialCapacity </span><span class="token operator" style=color:#393A34>+</span><span class="token plain"> </span><span class="token number" style=color:#36acaa>100</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"> </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 annotation punctuation" style=color:#393A34>@Override</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>void</span><span class="token plain"> </span><span class="token function" style=color:#d73a49>grow</span><span class="token punctuation" style=color:#393A34>(</span><span class="token class-name">MemoryBuffer</span><span class="token plain"> buffer</span><span class="token punctuation" style=color:#393A34>,</span><span class="token plain"> </span><span class="token keyword" style=color:#00009f>int</span><span class="token plain"> newCapacity</span><span class="token punctuation" style=color:#393A34>)</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>if</span><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>(</span><span class="token plain">newCapacity </span><span class="token operator" style=color:#393A34><=</span><span class="token plain"> buffer</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>size</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><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>return</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 comment" style=color:#999988;font-style:italic>// Custom growth strategy - add 100% extra capacity</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>int</span><span class="token plain"> newSize </span><span class="token operator" style=color:#393A34>=</span><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>(</span><span class="token keyword" style=color:#00009f>int</span><span class="token punctuation" style=color:#393A34>)</span><span class="token plain"> </span><span class="token punctuation" style=color:#393A34>(</span><span class="token plain">newCapacity </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 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"> data </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 keyword" style=color:#00009f>byte</span><span class="token punctuation" style=color:#393A34>[</span><span class="token plain">newSize</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"> buffer</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>get</span><span class="token punctuation" style=color:#393A34>(</span><span class="token number" style=color:#36acaa>0</span><span class="token punctuation" style=color:#393A34>,</span><span class="token plain"> data</span><span class="token punctuation" style=color:#393A34>,</span><span class="token plain"> </span><span class="token number" style=color:#36acaa>0</span><span class="token punctuation" style=color:#393A34>,</span><span class="token plain"> buffer</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>size</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 punctuation" style=color:#393A34>;</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> buffer</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>initHeapBuffer</span><span class="token punctuation" style=color:#393A34>(</span><span class="token plain">data</span><span class="token punctuation" style=color:#393A34>,</span><span class="token plain"> </span><span class="token number" style=color:#36acaa>0</span><span class="token punctuation" style=color:#393A34>,</span><span class="token plain"> data</span><span class="token punctuation" style=color:#393A34>.</span><span class="token plain">length</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 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 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>// Set the custom allocator globally</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"></span><span class="token class-name">MemoryBuffer</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>setGlobalAllocator</span><span class="token punctuation" style=color:#393A34>(</span><span class="token plain">customAllocator</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 comment" style=color:#999988;font-style:italic>// All subsequent MemoryBuffer allocations will use your custom allocator</span><span class="token plain"></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 punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>withXlang</span><span class="token punctuation" style=color:#393A34>(</span><span class="token boolean" style=color:#36acaa>false</span><span class="token punctuation" style=color:#393A34>)</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"></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">someObject</span><span class="token punctuation" style=color:#393A34>)</span><span class="token punctuation" style=color:#393A34>;</span><span class="token plain"> </span><span class="token comment" style=color:#999988;font-style:italic>// Uses custom allocator</span><br/></div></code></pre></div></div> |
| <h3 class="anchor anchorTargetStickyNavbar_Vzrq" id=default-memory-allocator-behavior>Default Memory Allocator Behavior<a href=#default-memory-allocator-behavior class=hash-link aria-label="Direct link to Default Memory Allocator Behavior" title="Direct link to Default Memory Allocator Behavior" translate=no></a></h3> |
| <p>The default allocator uses the following growth strategy:</p> |
| <ul> |
| <li class="">For buffers smaller than <code>BUFFER_GROW_STEP_THRESHOLD</code> (100MB): multiply capacity by 2</li> |
| <li class="">For larger buffers: multiply capacity by 1.5 (capped at <code>Integer.MAX_VALUE - 8</code>)</li> |
| </ul> |
| <p>This provides a balance between avoiding frequent reallocations and preventing excessive memory usage.</p> |
| <h3 class="anchor anchorTargetStickyNavbar_Vzrq" id=use-cases>Use Cases<a href=#use-cases class=hash-link aria-label="Direct link to Use Cases" title="Direct link to Use Cases" translate=no></a></h3> |
| <p>Custom memory allocators are useful for:</p> |
| <ul> |
| <li class=""><strong>Memory Pooling</strong>: Reuse allocated buffers to reduce GC pressure</li> |
| <li class=""><strong>Performance Tuning</strong>: Use different growth strategies based on your workload</li> |
| <li class=""><strong>Debugging</strong>: Add logging or tracking to monitor memory usage</li> |
| <li class=""><strong>Off-heap Memory</strong>: Integrate with off-heap memory management systems</li> |
| </ul> |
| <h2 class="anchor anchorTargetStickyNavbar_Vzrq" id=logging>Logging<a href=#logging class=hash-link aria-label="Direct link to Logging" title="Direct link to Logging" translate=no></a></h2> |
| <h3 class="anchor anchorTargetStickyNavbar_Vzrq" id=forylogger>ForyLogger<a href=#forylogger class=hash-link aria-label="Direct link to ForyLogger" title="Direct link to ForyLogger" translate=no></a></h3> |
| <p>By default, Fory uses a custom logger <code>ForyLogger</code> for internal needs at <code>WARN</code> level, or <code>INFO</code> level when <code>ENABLE_FORY_DEBUG_OUTPUT=1</code> is set. Set <code>FORY_LOG_LEVEL</code> to <code>ERROR</code>, <code>WARN</code>, <code>INFO</code>, or <code>DEBUG</code> to configure the process default level before startup. <code>ForyLogger</code> builds resulting logged data into a single string and sends it directly to <code>System.out</code>. The result line layout is similar to (in Log4j notation):</p> |
| <div class="language-text codeBlockContainer_Ckt0 theme-code-block" style=--prism-color:#393A34;--prism-background-color:#f6f8fa><div class=codeBlockContent_QJqH><pre tabindex=0 class="prism-code language-text 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">%d{yyyy-MM-dd hh:mm:ss} %p %C:%L [%t] - %m%n</span><br/></div></code></pre></div></div> |
| <p>The layout can't be changed.</p> |
| <p>Example output:</p> |
| <div class="language-text codeBlockContainer_Ckt0 theme-code-block" style=--prism-color:#393A34;--prism-background-color:#f6f8fa><div class=codeBlockContent_QJqH><pre tabindex=0 class="prism-code language-text 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">2025-11-07 08:49:59 INFO CompileUnit:55 [main] - Generate code for org.apache.fory.builder.SerializedLambdaForyCodec_0 took 35 ms.</span><br/></div><div class=token-line style=color:#393A34><span class="token plain">2025-11-07 08:50:00 INFO JaninoUtils:121 [main] - Compile [SerializedLambdaForyCodec_0] take 144 ms</span><br/></div></code></pre></div></div> |
| <h3 class="anchor anchorTargetStickyNavbar_Vzrq" id=slf4jlogger>Slf4jLogger<a href=#slf4jlogger class=hash-link aria-label="Direct link to Slf4jLogger" title="Direct link to Slf4jLogger" translate=no></a></h3> |
| <p>If a more sophisticated logger is required, configure Fory to use Slf4j via <code>LoggerFactory.useSlf4jLogging()</code>. For example, enabling Slf4j before creating Fory:</p> |
| <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>public</span><span class="token plain"> </span><span class="token keyword" style=color:#00009f>static</span><span class="token plain"> </span><span class="token keyword" style=color:#00009f>final</span><span class="token plain"> </span><span class="token class-name">ThreadSafeFory</span><span class="token plain"> </span><span class="token constant" style=color:#36acaa>FORY</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>static</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 class-name">LoggerFactory</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>useSlf4jLogging</span><span class="token punctuation" style=color:#393A34>(</span><span class="token boolean" style=color:#36acaa>true</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 constant" style=color:#36acaa>FORY</span><span class="token plain"> </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 punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>withXlang</span><span class="token punctuation" style=color:#393A34>(</span><span class="token boolean" style=color:#36acaa>false</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>buildThreadSafeFory</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"></span><span class="token punctuation" style=color:#393A34>}</span><br/></div></code></pre></div></div> |
| <p><strong>Note:</strong> Enabling Slf4j via <code>useSlf4jLogging</code> will be ignored when the application runs in a GraalVM native image.</p> |
| <h3 class="anchor anchorTargetStickyNavbar_Vzrq" id=suppress-fory-logs>Suppress Fory Logs<a href=#suppress-fory-logs class=hash-link aria-label="Direct link to Suppress Fory Logs" title="Direct link to Suppress Fory Logs" translate=no></a></h3> |
| <p>Both <code>ForyLogger</code> and <code>Slf4jLogger</code> allow controlling log output level or suppressing logs entirely. Configure logger level via <code>LoggerFactory.setLogLevel()</code>:</p> |
| <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>static</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 comment" style=color:#999988;font-style:italic>// to log only WARN and higher</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token class-name">LoggerFactory</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>setLogLevel</span><span class="token punctuation" style=color:#393A34>(</span><span class="token class-name">LogLevel</span><span class="token punctuation" style=color:#393A34>.</span><span class="token constant" style=color:#36acaa>WARN_LEVEL</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 comment" style=color:#999988;font-style:italic>// to disable logging entirely</span><span class="token plain"></span><br/></div><div class=token-line style=color:#393A34><span class="token plain"> </span><span class="token class-name">LoggerFactory</span><span class="token punctuation" style=color:#393A34>.</span><span class="token function" style=color:#d73a49>disableLogging</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"></span><span class="token punctuation" style=color:#393A34>}</span><br/></div></code></pre></div></div> |
| <p><strong>Note:</strong> Selected logging level is applied before Slf4j implementation's logger level. So if you set <code>WARN_LEVEL</code> (as in the example above) then you will not see INFO messages from Fory even if INFO is enabled in Logback.</p> |
| <h2 class="anchor anchorTargetStickyNavbar_Vzrq" id=related-topics>Related Topics<a href=#related-topics class=hash-link aria-label="Direct link to Related Topics" title="Direct link to Related Topics" translate=no></a></h2> |
| <ul> |
| <li class=""><a class="" href=/docs/next/guide/java/compression>Compression</a> - Data compression options</li> |
| <li class=""><a class="" href=/docs/next/guide/java/configuration>Configuration</a> - All ForyBuilder options</li> |
| <li class=""><a class="" href=/docs/next/guide/java/native_serialization>Native Serialization</a> - Java-only serialization, JDK hooks, and zero-copy buffers</li> |
| <li class=""><a class="" href=/docs/next/guide/java/object_copy>Object Copy</a> - Deep copy functionality</li> |
| <li class=""><a class="" href=/docs/next/guide/java/xlang_serialization>Xlang Serialization</a> - Java xlang interoperability</li> |
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