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| <h1 class="title-container" > |
| Geode PDX Serialization |
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| <div class="quick-links"><ul> |
| <li><a href="#pdx-ser-portability">Portability of PDX Serializable Objects</a></li> |
| <li><a href="#pdx-ser-reduced-deserialization">Reduced Deserialization of Serialized Objects</a></li> |
| <li><a href="#pdx-ser-delta-prop">Delta Propagation with PDX Serialization</a></li> |
| <li><a href="#pdx-ser-details">PDX Serialization Details</a></li> |
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| |
| <p>Geode’s Portable Data eXchange (PDX) is a cross-language data format that can reduce the cost of distributing and serializing your objects.</p> |
| |
| <p>Geode .NET PDX serialization:</p> |
| |
| <ul> |
| <li><p>Is <a href="#pdx-ser-portability">interoperable with other languages by Geode</a> – no need to program a Java-side implementation</p></li> |
| <li><p><a href="#pdx-ser-reduced-deserialization">Reduces |
| deserialization overhead</a> by providing direct field access on servers of serialized data, |
| without full deserialization. Stores data in named fields that you can access individually, to |
| avoid the cost of deserializing the entire data object</p></li> |
| <li><p><a href="#pdx-ser-delta-prop">Works with Geode delta propagation</a></p></li> |
| </ul> |
| |
| <p>The simplest option is to use <a href="/docs/geode-native/dotnet/113/serialization/dotnet-serialization/dotnet-pdx-autoserializer.html">automatic serialization</a> by registering the Geode .NET |
| PDX reflection-based autoserializer in your application. When you have an autoserializer, |
| Geode uses it for all domain objects that are not separately treated under the IPDXSerializable interface.</p> |
| |
| <p>For greater control, you can specify individual treatment for domain objects using the <code>IPdxSerializable</code> interface. |
| Objects derived from the <code>IPdxSerializable</code> interface are not subject to autoserialization.</p> |
| |
| <h2 id="portability-of-pdx-serializable-objects"><a id="pdx-ser-portability"></a>Portability of PDX Serializable Objects</h2> |
| |
| <p>When you create an <code>IPdxSerializable</code> object, Geode stores the object’s type |
| information in a central registry. The information is passed between peers, between clients and |
| servers, and between distributed systems.</p> |
| |
| <p>This offers a notable advantage to the .NET client, which shares data with Java cache |
| servers. When using PDX serialization, clients automatically pass registry information to servers when they store an |
| <code>IPdxSerializable</code> object. Clients can run queries and functions against the data in the servers |
| without the servers needing to know anything about the stored objects. One client can store data on |
| the server to be retrieved by another client, with the server never needing to know the object |
| type. This means you can code your .NET clients to manage data using Java servers without having to |
| create Java implementations of your .NET domain objects.</p> |
| |
| <h2 id="reduced-deserialization-of-serialized-objects"><a id="pdx-ser-reduced-deserialization"></a>Reduced Deserialization of Serialized Objects</h2> |
| |
| <p>The access methods for <code>IPdxSerializable</code> objects allow you to examine specific fields of your |
| domain object without deserializing the entire object. This can reduce |
| deserialization costs significantly. Client .NET apps can run queries and execute functions against |
| the objects in the server caches without deserializing the entire object on the server side. The |
| query engine automatically recognizes PDX objects and uses only the fields it needs.</p> |
| |
| <p>Clients can execute Java functions on server data that only access parts of the domain objects by using <code>PdxInstance.</code></p> |
| |
| <p>Likewise, peers can access just the fields needed from the serialized object, keeping the object |
| stored in the cache in serialized form.</p> |
| |
| <h2 id="delta-propagation-with-pdx-serialization"><a id="pdx-ser-delta-prop"></a>Delta Propagation with PDX Serialization</h2> |
| |
| <p>You can use Geode delta propagation with PDX serialization.</p> |
| |
| <h2 id="pdx-serialization-details"><a id='pdx-ser-details'></a>PDX Serialization Details</h2> |
| |
| <p>See the following sections for details on implementing PDX serialization and autoserialization:</p> |
| |
| <ul> |
| <li><a href="/docs/geode-native/dotnet/113/serialization/dotnet-serialization/dotnet-pdx-autoserializer.html">Using the Geode PDX Autoserializer</a></li> |
| <li><a href="/docs/geode-native/dotnet/113/serialization/dotnet-serialization/serialize-using-ipdxserializable.html">Using the IPdxSerializable Interface</a></li> |
| <li><a href="/docs/geode-native/dotnet/113/serialization/dotnet-serialization/pdx-serializable-examples.html">IPdxSerializable Examples</a></li> |
| </ul> |
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