52 lines
1.6 KiB
Plaintext
52 lines
1.6 KiB
Plaintext
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[[modules-http]]
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== HTTP
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The http module allows to expose *elasticsearch* APIs
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over HTTP.
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The http mechanism is completely asynchronous in nature, meaning that
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there is no blocking thread waiting for a response. The benefit of using
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asynchronous communication for HTTP is solving the
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http://en.wikipedia.org/wiki/C10k_problem[C10k problem].
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When possible, consider using
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http://en.wikipedia.org/wiki/Keepalive#HTTP_Keepalive[HTTP keep alive]
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when connecting for better performance and try to get your favorite
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client not to do
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http://en.wikipedia.org/wiki/Chunked_transfer_encoding[HTTP chunking].
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[float]
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=== Settings
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The following are the settings the can be configured for HTTP:
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[cols="<,<",options="header",]
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|=======================================================================
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|Setting |Description
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|`http.port` |A bind port range. Defaults to `9200-9300`.
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|`http.max_content_length` |The max content of an HTTP request. Defaults
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to `100mb`
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|`http.max_initial_line_length` |The max length of an HTTP URL. Defaults
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to `4kb`
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|`http.compression` |Support for compression when possible (with
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Accept-Encoding). Defaults to `false`.
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|`http.compression_level` |Defines the compression level to use.
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Defaults to `6`.
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|=======================================================================
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It also shares the uses the common
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<<modules-network,network settings>>.
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[float]
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=== Disable HTTP
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The http module can be completely disabled and not started by setting
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`http.enabled` to `false`. This make sense when creating non
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<<modules-node,data nodes>> which accept HTTP
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requests, and communicate with data nodes using the internal
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<<modules-transport,transport>>.
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