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DOCS-14580-Zstandard-compression-level #5577

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Jul 19, 2021
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DOCS-14580-Zstandard-compression-level #5577

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18 changes: 18 additions & 0 deletions source/reference/configuration-options.txt
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Expand Up @@ -3847,7 +3847,25 @@ LDAP Parameters

*Available starting in MongoDB 4.2.1 (and 4.0.12)*

.. setting:: storage.wiredTiger.engineConfig.zstdCompressionLevel

*Type*: integer

*Default*: 6

Specifies the level of compression applied when using
the :term:`zstd` compressor.

Values can range from 1 to 22.

The higher the specified value for ``zstdCompressionLevel``
the higher the compression which is applied.

Only applicable when
:setting:`~storage.wiredTiger.collectionConfig.blockCompressor`
is set to ``zstd``.

*Available starting in MongoDB 5.0*

.. setting:: storage.wiredTiger.collectionConfig.blockCompressor

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11 changes: 11 additions & 0 deletions source/release-notes/5.0.txt
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Expand Up @@ -398,6 +398,17 @@ Starting in MongoDB 5.0, the new parameter
the time in milliseconds to wait for any ongoing database operations to
complete before initiating a shutdown of :binary:`~bin.mongos`.

Configurable ``zstd`` Compression Level
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

MongoDB 5.0 introduces the
:setting:`~storage.wiredTiger.engineConfig.zstdCompressionLevel`
configuration file option which allows for configurable compression
levels when
:setting:`~storage.wiredTiger.collectionConfig.blockCompressor` is set
to ``zstd``.


Lock-Free Read Operations
~~~~~~~~~~~~~~~~~~~~~~~~~

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