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DOCSP-51324: Network Compression #110
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.. _kotlin-sync-compression: | ||
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======================== | ||
Compress Network Traffic | ||
======================== | ||
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.. contents:: On this page | ||
:local: | ||
:backlinks: none | ||
:depth: 1 | ||
:class: singlecol | ||
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.. facet:: | ||
:name: genre | ||
:values: reference | ||
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.. meta:: | ||
:keywords: zlib, zstandard, zstd, snappy | ||
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Overview | ||
-------- | ||
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In this guide, you can learn how to use the {+driver-short+} to enable network | ||
compression. The driver provides a connection option to compress messages, which | ||
reduces the amount of data passed over the network between MongoDB and your application. | ||
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The driver supports the following compression algorithms: | ||
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- `Snappy <https://google.github.io/snappy/>`__ | ||
- `Zlib <https://zlib.net/>`__ | ||
- `Zstandard <https://github.com/facebook/zstd/>`__ | ||
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If you specify multiple compression algorithms, the driver selects the first one | ||
in the list supported by your MongoDB instance. | ||
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.. note:: | ||
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Applications that require Snappy or Zstandard compression must | ||
add explicit dependencies for those algorithms. To learn more, | ||
see the :ref:`kotlin-sync-compression-dependencies` section of this guide. | ||
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Specify Compression Algorithms | ||
------------------------------ | ||
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You can enable compression for the connection to your MongoDB instance | ||
by specifying the algorithms in one of the following ways: | ||
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- Chain the ``compressorList()`` method to the ``MongoClientSettings.builder()`` method. | ||
- Use the ``compressors`` parameter in your connection URI. | ||
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The following examples demonstrate how to specify all available compressors | ||
while connecting to MongoDB. Select the :guilabel:`MongoClientSettings` or :guilabel:`Connection URI` | ||
tab to see the corresponding syntax: | ||
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.. include:: /includes/connect/compression-tabs.rst | ||
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Specify the Zlib Compression Level | ||
---------------------------------- | ||
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If you specify ``zlib`` as one of your compression algorithms, you can also use the | ||
``MongoCompressor.LEVEL`` property to specify a compression level. This option accepts | ||
an integer value between ``-1`` and ``9``: | ||
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- **-1:** Default compression (usually ``6``) | ||
- **0:** No compression | ||
- **1:** Fastest speed but lowest compression | ||
- **9:** Best compression but slowest speed | ||
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The following examples demonstrate how to specify a compression level for | ||
the ``zlib`` compressor. Select the :guilabel:`MongoClientSettings` or :guilabel:`Connection URI` | ||
tab to see the corresponding syntax: | ||
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.. include:: /includes/connect/zlib-level-tabs.rst | ||
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.. _kotlin-sync-compression-dependencies: | ||
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Compression Algorithm Dependencies | ||
---------------------------------- | ||
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The JDK natively supports `Zlib <https://zlib.net/>`__ compression. However, | ||
Snappy and Zstandard depend on open source Java implementations. To learn more | ||
about these implementations, see the following GitHub repositories: | ||
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- `snappy-java <https://github.com/xerial/snappy-java>`__ | ||
- `zstd-jni <https://github.com/luben/zstd-jni>`__ | ||
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API Documentation | ||
----------------- | ||
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To learn more about any of the methods or types discussed in this | ||
guide, see the following API documentation: | ||
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- `MongoClient <{+driver-api+}/-mongo-client/index.html>`__ | ||
- `createSnappyCompressor() <{+core-api+}/MongoCompressor.html#createSnappyCompressor()>`__ | ||
- `createZlibCompressor() <{+core-api+}/MongoCompressor.html#createZlibCompressor()>`__ | ||
- `createZstdCompressor() <{+core-api+}/MongoCompressor.html#createZstdCompressor()>`__ |
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