44 lines
1.5 KiB
Plaintext
44 lines
1.5 KiB
Plaintext
|
[[modules-transport]]
|
||
|
|
== Transport
|
||
|
|
|
||
|
|
The transport module is used for internal communication between nodes
|
||
|
|
within the cluster. Each call that goes from one node to the other uses
|
||
|
|
the transport module (for example, when an HTTP GET request is processed
|
||
|
|
by one node, and should actually be processed by another node that holds
|
||
|
|
the data).
|
||
|
|
|
||
|
|
The transport mechanism is completely asynchronous in nature, meaning
|
||
|
|
that there is no blocking thread waiting for a response. The benefit of
|
||
|
|
using asynchronous communication is first solving the
|
||
|
|
http://en.wikipedia.org/wiki/C10k_problem[C10k problem], as well as
|
||
|
|
being the idle solution for scatter (broadcast) / gather operations such
|
||
|
|
as search in ElasticSearch.
|
||
|
|
|
||
|
|
[float]
|
||
|
|
=== TCP Transport
|
||
|
|
|
||
|
|
The TCP transport is an implementation of the transport module using
|
||
|
|
TCP. It allows for the following settings:
|
||
|
|
|
||
|
|
[cols="<,<",options="header",]
|
||
|
|
|=======================================================================
|
||
|
|
|Setting |Description
|
||
|
|
|`transport.tcp.port` |A bind port range. Defaults to `9300-9400`.
|
||
|
|
|
||
|
|
|`transport.tcp.connect_timeout` |The socket connect timeout setting (in
|
||
|
|
time setting format). Defaults to `2s`.
|
||
|
|
|
||
|
|
|`transport.tcp.compress` |Set to `true` to enable compression (LZF)
|
||
|
|
between all nodes. Defaults to `false`.
|
||
|
|
|=======================================================================
|
||
|
|
|
||
|
|
It also shares the uses the common
|
||
|
|
<<modules-network,network settings>>.
|
||
|
|
|
||
|
|
[float]
|
||
|
|
=== Local Transport
|
||
|
|
|
||
|
|
This is a handy transport to use when running integration tests within
|
||
|
|
the JVM. It is automatically enabled when using
|
||
|
|
`NodeBuilder#local(true)`.
|