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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>0.15</b>, which is no longer actively maintained.</div><div class=margin-top--md>For up-to-date documentation, see the <b><a href=/docs/introduction/features>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><a class=breadcrumbs__link href=/docs/0.15/introduction/overview><span>Introduction</span></a><li class="breadcrumbs__item breadcrumbs__item--active"><span class=breadcrumbs__link>Features</span></ul></nav><span class="theme-doc-version-badge badge badge--secondary">Version: 0.15</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>Features</h1></header><h2 class="anchor anchorTargetStickyNavbar_Vzrq" id=core-capabilities>Core Capabilities<a href=#core-capabilities class=hash-link aria-label="Direct link to Core Capabilities" title="Direct link to Core Capabilities" translate=no>​</a></h2>
<h3 class="anchor anchorTargetStickyNavbar_Vzrq" id=-high-performance-serialization>🚀 High-Performance Serialization<a href=#-high-performance-serialization class=hash-link aria-label="Direct link to 🚀 High-Performance Serialization" title="Direct link to 🚀 High-Performance Serialization" translate=no>​</a></h3>
<p>Apache Fory™ delivers exceptional performance through advanced optimization techniques:</p>
<ul>
<li class=""><strong>JIT Compilation</strong>: Runtime code generation for Java eliminates virtual method calls and inlines hot paths</li>
<li class=""><strong>Static Code Generation</strong>: Compile-time code generation for Rust, C++, and Go delivers peak performance without runtime overhead</li>
<li class=""><strong>Zero-Copy Operations</strong>: Direct memory access without intermediate buffer copies; row format enables random access and partial serialization</li>
<li class=""><strong>Intelligent Encoding</strong>: Variable-length compression for integers and strings; SIMD acceleration for arrays (Java 16+)</li>
<li class=""><strong>Meta Sharing</strong>: Class metadata packing reduces redundant type information across serializations</li>
</ul>
<h3 class="anchor anchorTargetStickyNavbar_Vzrq" id=-cross-language-serialization>🌍 Cross-Language Serialization<a href=#-cross-language-serialization class=hash-link aria-label="Direct link to 🌍 Cross-Language Serialization" title="Direct link to 🌍 Cross-Language Serialization" translate=no>​</a></h3>
<p>The <strong><a class="" href=/docs/0.15/specification/xlang_serialization_spec>xlang serialization format</a></strong> enables seamless data exchange across programming languages:</p>
<ul>
<li class=""><strong>Automatic Type Mapping</strong>: Intelligent conversion between language-specific types (<a class="" href=/docs/0.15/specification/xlang_type_mapping>type mapping</a>)</li>
<li class=""><strong>Reference Preservation</strong>: Shared and circular references work correctly across languages</li>
<li class=""><strong>Polymorphism</strong>: Objects serialize/deserialize with their actual runtime types</li>
<li class=""><strong>Schema Evolution</strong>: Optional forward/backward compatibility for evolving schemas</li>
<li class=""><strong>Automatic Serialization</strong>: No IDL or schema definitions required; serialize any object directly without code generation</li>
</ul>
<h3 class="anchor anchorTargetStickyNavbar_Vzrq" id=-row-format>📊 Row Format<a href=#-row-format class=hash-link aria-label="Direct link to 📊 Row Format" title="Direct link to 📊 Row Format" translate=no>​</a></h3>
<p>A cache-friendly <strong><a class="" href=/docs/0.15/specification/row_format_spec>row format</a></strong> optimized for analytics workloads:</p>
<ul>
<li class=""><strong>Zero-Copy Random Access</strong>: Read individual fields without deserializing entire objects</li>
<li class=""><strong>Partial Operations</strong>: Selective field serialization and deserialization for efficiency</li>
<li class=""><strong>Apache Arrow Integration</strong>: Seamless conversion to columnar format for analytics pipelines</li>
<li class=""><strong>Multi-Language</strong>: Available in Java, Python, Rust and C++</li>
</ul>
<h3 class="anchor anchorTargetStickyNavbar_Vzrq" id=-security--production-readiness>🔒 Security & Production-Readiness<a href=#-security--production-readiness class=hash-link aria-label="Direct link to 🔒 Security & Production-Readiness" title="Direct link to 🔒 Security & Production-Readiness" translate=no>​</a></h3>
<p>Enterprise-grade security and compatibility:</p>
<ul>
<li class=""><strong>Class Registration</strong>: Whitelist-based deserialization control (enabled by default)</li>
<li class=""><strong>Depth Limiting</strong>: Protection against recursive object graph attacks</li>
<li class=""><strong>Configurable Policies</strong>: Custom class checkers and deserialization policies</li>
<li class=""><strong>Platform Support</strong>: Java 8-24, GraalVM native image, multiple OS platforms</li>
</ul>
<h2 class="anchor anchorTargetStickyNavbar_Vzrq" id=java-features>Java Features<a href=#java-features class=hash-link aria-label="Direct link to Java Features" title="Direct link to Java Features" translate=no>​</a></h2>
<h3 class="anchor anchorTargetStickyNavbar_Vzrq" id=-high-performance>🚀 High Performance<a href=#-high-performance class=hash-link aria-label="Direct link to 🚀 High Performance" title="Direct link to 🚀 High Performance" translate=no>​</a></h3>
<ul>
<li class=""><strong>JIT Code Generation</strong>: Highly-extensible JIT framework generates serializer code at runtime using async multi-threaded compilation, delivering 20-170x speedup through:<!-- -->
<ul>
<li class="">Inlining variables to reduce memory access</li>
<li class="">Inlining method calls to eliminate virtual dispatch overhead</li>
<li class="">Minimizing conditional branching</li>
<li class="">Eliminating hash lookups</li>
</ul>
</li>
<li class=""><strong>Zero-Copy</strong>: Direct memory access without intermediate buffer copies; row format supports random access and partial serialization</li>
<li class=""><strong>Variable-Length Encoding</strong>: Optimized compression for integers, longs</li>
<li class=""><strong>Meta Sharing</strong>: Cached class metadata reduces redundant type information</li>
<li class=""><strong>SIMD Acceleration</strong>: Java Vector API support for array operations (Java 16+)</li>
</ul>
<h3 class="anchor anchorTargetStickyNavbar_Vzrq" id=-drop-in-replacement>🔧 Drop-in Replacement<a href=#-drop-in-replacement class=hash-link aria-label="Direct link to 🔧 Drop-in Replacement" title="Direct link to 🔧 Drop-in Replacement" translate=no>​</a></h3>
<ul>
<li class=""><strong>100% JDK Serialization Compatible</strong>: Supports <code>writeObject</code>/<code>readObject</code>/<code>writeReplace</code>/<code>readResolve</code>/<code>readObjectNoData</code>/<code>Externalizable</code></li>
<li class=""><strong>Java 8-24 Support</strong>: Works across all modern Java versions including Java 17+ records</li>
<li class=""><strong>GraalVM Native Image</strong>: AOT compilation support without reflection configuration</li>
</ul>
<h3 class="anchor anchorTargetStickyNavbar_Vzrq" id=-advanced-features>🔄 Advanced Features<a href=#-advanced-features class=hash-link aria-label="Direct link to 🔄 Advanced Features" title="Direct link to 🔄 Advanced Features" translate=no>​</a></h3>
<ul>
<li class=""><strong>Reference Tracking</strong>: Automatic handling of shared and circular references</li>
<li class=""><strong>Schema Evolution</strong>: Forward/backward compatibility for class schema changes</li>
<li class=""><strong>Polymorphism</strong>: Full support for inheritance hierarchies and interfaces</li>
<li class=""><strong>Deep Copy</strong>: Efficient deep cloning of complex object graphs with reference preservation</li>
<li class=""><strong>Security</strong>: Class registration and configurable deserialization policies</li>
</ul>
<h2 class="anchor anchorTargetStickyNavbar_Vzrq" id=python-features>Python Features<a href=#python-features class=hash-link aria-label="Direct link to Python Features" title="Direct link to Python Features" translate=no>​</a></h2>
<h3 class="anchor anchorTargetStickyNavbar_Vzrq" id=-flexible-serialization-modes>🔧 <strong>Flexible Serialization Modes</strong><a href=#-flexible-serialization-modes class=hash-link aria-label="Direct link to -flexible-serialization-modes" title="Direct link to -flexible-serialization-modes" translate=no>​</a></h3>
<ul>
<li class=""><strong>Python native Mode</strong>: Full Python compatibility, drop-in replacement for pickle/cloudpickle</li>
<li class=""><strong>Cross-Language Mode</strong>: Optimized for multi-language data exchange</li>
<li class=""><strong>Row Format</strong>: Zero-copy row format for analytics workloads</li>
</ul>
<h3 class="anchor anchorTargetStickyNavbar_Vzrq" id=-versatile-serialization-features>🎯 Versatile Serialization Features<a href=#-versatile-serialization-features class=hash-link aria-label="Direct link to 🎯 Versatile Serialization Features" title="Direct link to 🎯 Versatile Serialization Features" translate=no>​</a></h3>
<ul>
<li class=""><strong>Shared/circular reference support</strong> for complex object graphs in both Python-native and cross-language modes</li>
<li class=""><strong>Polymorphism support</strong> for customized types with automatic type dispatching</li>
<li class=""><strong>Schema evolution</strong> support for backward/forward compatibility when using dataclasses in cross-language mode</li>
<li class=""><strong>Out-of-band buffer support</strong> for zero-copy serialization of large data structures like NumPy arrays and Pandas DataFrames, compatible with pickle protocol 5</li>
</ul>
<h3 class="anchor anchorTargetStickyNavbar_Vzrq" id=-blazing-fast-performance>⚡ <strong>Blazing Fast Performance</strong><a href=#-blazing-fast-performance class=hash-link aria-label="Direct link to -blazing-fast-performance" title="Direct link to -blazing-fast-performance" translate=no>​</a></h3>
<ul>
<li class=""><strong>Extremely fast performance</strong> compared to other serialization frameworks</li>
<li class=""><strong>Runtime code generation</strong> and <strong>Cython-accelerated</strong> core implementation for optimal performance</li>
</ul>
<h3 class="anchor anchorTargetStickyNavbar_Vzrq" id=-compact-data-size>📦 Compact Data Size<a href=#-compact-data-size class=hash-link aria-label="Direct link to 📦 Compact Data Size" title="Direct link to 📦 Compact Data Size" translate=no>​</a></h3>
<ul>
<li class=""><strong>Compact object graph protocol</strong> with minimal space overhead—up to 3× size reduction compared to pickle/cloudpickle</li>
<li class=""><strong>Meta packing and sharing</strong> to minimize type forward/backward compatibility space overhead</li>
</ul>
<h3 class="anchor anchorTargetStickyNavbar_Vzrq" id=️-security--safety>🛡️ <strong>Security & Safety</strong><a href=#️-security--safety class=hash-link aria-label="Direct link to ️-security--safety" title="Direct link to ️-security--safety" translate=no>​</a></h3>
<ul>
<li class=""><strong>Strict mode</strong> prevents deserialization of untrusted types by type registration and checks.</li>
<li class=""><strong>Reference tracking</strong> for handling circular references safely</li>
</ul>
<h2 class="anchor anchorTargetStickyNavbar_Vzrq" id=rust-features>Rust Features<a href=#rust-features class=hash-link aria-label="Direct link to Rust Features" title="Direct link to Rust Features" translate=no>​</a></h2>
<h3 class="anchor anchorTargetStickyNavbar_Vzrq" id=-why-apache-fory-rust>🚀 Why Apache Fory™ Rust?<a href=#-why-apache-fory-rust class=hash-link aria-label="Direct link to 🚀 Why Apache Fory™ Rust?" title="Direct link to 🚀 Why Apache Fory™ Rust?" translate=no>​</a></h3>
<ul>
<li class=""><strong>🔥 Blazingly Fast</strong>: Zero-copy deserialization and optimized binary protocols</li>
<li class=""><strong>🌍 Cross-Language</strong>: Seamlessly serialize/deserialize data across Java, Python, C++, Go, JavaScript, and Rust</li>
<li class=""><strong>🎯 Type-Safe</strong>: Compile-time type checking with derive macros</li>
<li class=""><strong>🔄 Circular References</strong>: Automatic tracking of shared and circular references with <code>Rc</code>/<code>Arc</code> and weak pointers</li>
<li class=""><strong>🧬 Polymorphic</strong>: Serialize trait objects with <code>Box&lt;dyn Trait></code>, <code>Rc&lt;dyn Trait></code>, and <code>Arc&lt;dyn Trait></code></li>
<li class=""><strong>📦 Schema Evolution</strong>: Compatible mode for independent schema changes</li>
<li class=""><strong>⚡ Two Modes</strong>: Object graph serialization and zero-copy row-based format</li>
</ul>
<h3 class="anchor anchorTargetStickyNavbar_Vzrq" id=object-graph-serialization>Object Graph Serialization<a href=#object-graph-serialization class=hash-link aria-label="Direct link to Object Graph Serialization" title="Direct link to Object Graph Serialization" translate=no>​</a></h3>
<p>Automatic serialization of complex object graphs, preserving the structure and relationships between objects. The <code>#[derive(ForyObject)]</code> macro generates efficient serialization code at compile time, eliminating runtime overhead:</p>
<ul>
<li class="">Nested struct serialization with arbitrary depth</li>
<li class="">Collection types (Vec, HashMap, HashSet, BTreeMap)</li>
<li class="">Enum type support</li>
<li class="">Optional fields with <code>Option&lt;T></code></li>
<li class="">Automatic handling of primitive types and strings</li>
<li class="">Efficient binary encoding with variable-length integers</li>
</ul>
<h3 class="anchor anchorTargetStickyNavbar_Vzrq" id=shared-and-circular-references>Shared and Circular References<a href=#shared-and-circular-references class=hash-link aria-label="Direct link to Shared and Circular References" title="Direct link to Shared and Circular References" translate=no>​</a></h3>
<p>Automatically tracks and preserves reference identity for shared objects using <code>Rc&lt;T></code> and <code>Arc&lt;T></code>. When the same object is referenced multiple times, Fory serializes it only once and uses reference IDs for subsequent occurrences. This ensures:</p>
<ul>
<li class=""><strong>Space efficiency</strong>: No data duplication in serialized output</li>
<li class=""><strong>Reference identity preservation</strong>: Deserialized objects maintain the same sharing relationships</li>
<li class=""><strong>Circular reference support</strong>: Use <code>RcWeak&lt;T></code> and <code>ArcWeak&lt;T></code> to break cycles</li>
</ul>
<h3 class="anchor anchorTargetStickyNavbar_Vzrq" id=trait-object-serialization>Trait Object Serialization<a href=#trait-object-serialization class=hash-link aria-label="Direct link to Trait Object Serialization" title="Direct link to Trait Object Serialization" translate=no>​</a></h3>
<p>Polymorphic serialization through trait objects, enabling dynamic dispatch and type flexibility. This is essential for plugin systems, heterogeneous collections, and extensible architectures. Supported trait object types:</p>
<ul>
<li class=""><code>Box&lt;dyn Trait></code> - Owned trait objects</li>
<li class=""><code>Rc&lt;dyn Trait></code> - Reference-counted trait objects</li>
<li class=""><code>Arc&lt;dyn Trait></code> - Thread-safe reference-counted trait objects</li>
<li class=""><code>Vec&lt;Box&lt;dyn Trait>></code>, <code>HashMap&lt;K, Box&lt;dyn Trait>></code> - Collections of trait objects</li>
</ul>
<h3 class="anchor anchorTargetStickyNavbar_Vzrq" id=schema-evolution>Schema Evolution<a href=#schema-evolution class=hash-link aria-label="Direct link to Schema Evolution" title="Direct link to Schema Evolution" translate=no>​</a></h3>
<p>Schema evolution in <strong>Compatible mode</strong>, allowing serialization and deserialization peers to have different type definitions. This enables independent evolution of services in distributed systems without breaking compatibility:</p>
<ul>
<li class="">Add new fields with default values</li>
<li class="">Remove obsolete fields (skipped during deserialization)</li>
<li class="">Change field nullability (<code>T</code> ↔ <code>Option&lt;T></code>)</li>
<li class="">Reorder fields (matched by name, not position)</li>
<li class="">Type-safe fallback to default values for missing fields</li>
</ul>
<h3 class="anchor anchorTargetStickyNavbar_Vzrq" id=custom-serializers>Custom Serializers<a href=#custom-serializers class=hash-link aria-label="Direct link to Custom Serializers" title="Direct link to Custom Serializers" translate=no>​</a></h3>
<p>For types that don't support <code>#[derive(ForyObject)]</code>, implement the <code>Serializer</code> trait manually. This is useful for:</p>
<ul>
<li class="">External types from other crates</li>
<li class="">Types with special serialization requirements</li>
<li class="">Legacy data format compatibility</li>
<li class="">Performance-critical custom encoding</li>
</ul>
<h3 class="anchor anchorTargetStickyNavbar_Vzrq" id=row-based-serialization>Row-Based Serialization<a href=#row-based-serialization class=hash-link aria-label="Direct link to Row-Based Serialization" title="Direct link to Row-Based Serialization" translate=no>​</a></h3>
<p>High-performance <strong>row format</strong> for zero-copy deserialization. Unlike traditional object serialization that reconstructs entire objects in memory, row format enables <strong>random access</strong> to fields directly from binary data without full deserialization.</p>
<ul>
<li class=""><strong>Zero-copy access</strong>: Read fields without allocating or copying data</li>
<li class=""><strong>Partial deserialization</strong>: Access only the fields you need</li>
<li class=""><strong>Memory-mapped files</strong>: Work with data larger than RAM</li>
<li class=""><strong>Cache-friendly</strong>: Sequential memory layout for better CPU cache utilization</li>
<li class=""><strong>Lazy evaluation</strong>: Defer expensive operations until field access</li>
</ul>
<h2 class="anchor anchorTargetStickyNavbar_Vzrq" id=scala-features>Scala Features<a href=#scala-features class=hash-link aria-label="Direct link to Scala Features" title="Direct link to Scala Features" translate=no>​</a></h2>
<h3 class="anchor anchorTargetStickyNavbar_Vzrq" id=supported-types>Supported Types<a href=#supported-types class=hash-link aria-label="Direct link to Supported Types" title="Direct link to Supported Types" translate=no>​</a></h3>
<p>Apache Fory™ supports all scala object serialization:</p>
<ul>
<li class=""><code>case</code> class serialization supported</li>
<li class=""><code>pojo/bean</code> class serialization supported</li>
<li class=""><code>object</code> singleton serialization supported</li>
<li class=""><code>collection</code> serialization supported</li>
<li class="">other types such as <code>tuple/either</code> and basic types are all supported too.</li>
</ul>
<p>Scala 2 and 3 are both supported.</p>
<h3 class="anchor anchorTargetStickyNavbar_Vzrq" id=scala-class-default-values-support>Scala Class Default Values Support<a href=#scala-class-default-values-support class=hash-link aria-label="Direct link to Scala Class Default Values Support" title="Direct link to Scala Class Default Values Support" translate=no>​</a></h3>
<p>Fory supports Scala class default values during deserialization when using compatible mode. This feature enables forward/backward compatibility when case classes or regular Scala classes have default parameters.</p>
<p>When a Scala class has default parameters, the Scala compiler generates methods in the companion object (for case classes) or in the class itself (for regular Scala classes) like <code>apply$default$1</code>, <code>apply$default$2</code>, etc. that return the default values. Fory can detect these methods and use them when deserializing objects where certain fields are missing from the serialized data.</p>
<h2 class="anchor anchorTargetStickyNavbar_Vzrq" id=kotlin-features>Kotlin Features<a href=#kotlin-features class=hash-link aria-label="Direct link to Kotlin Features" title="Direct link to Kotlin Features" translate=no>​</a></h2>
<h3 class="anchor anchorTargetStickyNavbar_Vzrq" id=supported-types-1>Supported Types<a href=#supported-types-1 class=hash-link aria-label="Direct link to Supported Types" title="Direct link to Supported Types" translate=no>​</a></h3>
<ul>
<li class="">primitives: <code>Byte</code>, <code>Boolean</code>, <code>Int</code>, <code>Short</code>, <code>Long</code>, <code>Char</code>, <code>Float</code>, <code>Double</code>, <code>UByte</code>, <code>UShort</code>, <code>UInt</code>, <code>ULong</code>.</li>
<li class=""><code>Byte</code>, <code>Boolean</code>, <code>Int</code>, <code>Short</code>, <code>Long</code>, <code>Char</code>, <code>Float</code>, <code>Double</code> works out of the box with the default fory java implementation.</li>
<li class="">stdlib <code>collection</code>: <code>ArrayDeque</code>, <code>ArrayList</code>, <code>HashMap</code>,<code>HashSet</code>, <code>LinkedHashSet</code>, <code>LinkedHashMap</code>.</li>
<li class=""><code>ArrayList</code>, <code>HashMap</code>,<code>HashSet</code>, <code>LinkedHashSet</code>, <code>LinkedHashMap</code> works out of the box with the default fory java implementation.</li>
<li class=""><code>String</code> works out of the box with the default fory java implementation.</li>
<li class="">arrays: <code>Array</code>, <code>BooleanArray</code>, <code>ByteArray</code>, <code>CharArray</code>, <code>DoubleArray</code>, <code>FloatArray</code>, <code>IntArray</code>, <code>LongArray</code>, <code>ShortArray</code></li>
<li class="">all standard array types work out of the box with the default fory java implementation.</li>
<li class="">unsigned arrays: <code>UByteArray</code>, <code>UShortArray</code>, <code>UIntArray</code>, <code>ULongArray</code></li>
<li class="">from stdlib: <code>Pair</code>, <code>Triple</code>, <code>Result</code></li>
<li class="">kotlin.random: <code>Random</code></li>
<li class="">kotlin.ranges: <code>CharRange</code>, <code>CharProgression</code>, <code>IntRange</code>, <code>IntProgression</code>, <code>LongRange</code>, <code>LongProgression</code>, <code>UintRange</code>, <code>UintProgression</code>, <code>ULongRange</code>, <code>ULongProgression</code></li>
<li class="">kotlin.text: <code>Regex</code></li>
<li class="">kotlin.time: <code>Duration</code></li>
<li class="">kotlin.uuid: <code>Uuid</code></li>
</ul>
<p>Additional support is added for the following classes in kotlin:</p>
<ul>
<li class="">Unsigned primitives: <code>UByte</code>, <code>UShort</code>, <code>UInt</code>, <code>ULong</code></li>
<li class="">Unsigned array types: <code>UByteArray</code>, <code>UShortArray</code>, <code>UIntArray</code>, <code>ULongArray</code></li>
<li class="">Empty collections: <code>emptyList</code>, <code>emptyMap</code>, <code>emptySet</code></li>
<li class="">Collections: <code>ArrayDeque</code></li>
<li class="">kotlin.time: <code>Duration</code></li>
<li class="">kotlin.uuid: <code>Uuid</code></li>
</ul>
<h3 class="anchor anchorTargetStickyNavbar_Vzrq" id=data-class-default-value-support>Data Class Default Value Support<a href=#data-class-default-value-support class=hash-link aria-label="Direct link to Data Class Default Value Support" title="Direct link to Data Class Default Value Support" translate=no>​</a></h3>
<p>Apache Fory™ Kotlin provides support for Kotlin data class default values during serialization and deserialization. This feature allows for backward and forward compatibility when data class schemas evolve.</p>
<p>When a Kotlin data class has parameters with default values, Apache Fory™ can:</p>
<ol>
<li class=""><strong>Detect default values</strong> using Kotlin reflection</li>
<li class=""><strong>Apply default values</strong> during deserialization when fields are missing from serialized data</li>
<li class=""><strong>Support schema evolution</strong> by allowing new fields with defaults to be added without breaking existing serialized data</li>
</ol></div><footer class="theme-doc-footer docusaurus-mt-lg"><div class="row margin-top--sm theme-doc-footer-edit-meta-row"><div class="col noPrint_WFHX"><a href=https://github.com/apache/fory-site/tree/main/docs/introduction/features.md target=_blank rel="noopener noreferrer" class=theme-edit-this-page><svg fill=currentColor height=20 width=20 viewBox="0 0 40 40" class=iconEdit_Z9Sw aria-hidden=true><g><path d="m34.5 11.7l-3 3.1-6.3-6.3 3.1-3q0.5-0.5 1.2-0.5t1.1 0.5l3.9 3.9q0.5 0.4 0.5 1.1t-0.5 1.2z m-29.5 17.1l18.4-18.5 6.3 6.3-18.4 18.4h-6.3v-6.2z"/></g></svg>Edit this page</a></div><div class="col lastUpdated_JAkA"></div></div></footer></article><nav class="docusaurus-mt-lg pagination-nav" aria-label="Docs pages"><a class="pagination-nav__link pagination-nav__link--prev" href=/docs/0.15/introduction/overview><div class=pagination-nav__sublabel>Previous</div><div class=pagination-nav__label>Overview</div></a><a class="pagination-nav__link pagination-nav__link--next" href=/docs/0.15/introduction/benchmark><div class=pagination-nav__sublabel>Next</div><div class=pagination-nav__label>Benchmark</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=#core-capabilities class="table-of-contents__link toc-highlight">Core Capabilities</a><ul><li><a href=#-high-performance-serialization class="table-of-contents__link toc-highlight">🚀 High-Performance Serialization</a><li><a href=#-cross-language-serialization class="table-of-contents__link toc-highlight">🌍 Cross-Language Serialization</a><li><a href=#-row-format class="table-of-contents__link toc-highlight">📊 Row Format</a><li><a href=#-security--production-readiness class="table-of-contents__link toc-highlight">🔒 Security & Production-Readiness</a></ul><li><a href=#java-features class="table-of-contents__link toc-highlight">Java Features</a><ul><li><a href=#-high-performance class="table-of-contents__link toc-highlight">🚀 High Performance</a><li><a href=#-drop-in-replacement class="table-of-contents__link toc-highlight">🔧 Drop-in Replacement</a><li><a href=#-advanced-features class="table-of-contents__link toc-highlight">🔄 Advanced Features</a></ul><li><a href=#python-features class="table-of-contents__link toc-highlight">Python Features</a><ul><li><a href=#-flexible-serialization-modes class="table-of-contents__link toc-highlight">🔧 <strong>Flexible Serialization Modes</strong></a><li><a href=#-versatile-serialization-features class="table-of-contents__link toc-highlight">🎯 Versatile Serialization Features</a><li><a href=#-blazing-fast-performance class="table-of-contents__link toc-highlight">⚡ <strong>Blazing Fast Performance</strong></a><li><a href=#-compact-data-size class="table-of-contents__link toc-highlight">📦 Compact Data Size</a><li><a href=#️-security--safety class="table-of-contents__link toc-highlight">🛡️ 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