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Added documentation about the way that readwritesplit stores session commands.

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Markus Makela 2015-02-20 16:39:41 +02:00
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commit 3145ebac43
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Documentation/Getting-Started/Configuration-Guide.md
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@ -710,6 +710,8 @@ Session commands include for example:
**NOTE: if variable assignment is embedded in a write statement it is routed to _Master_ only. For example, `INSERT INTO t1 values(@myvar:=5, 7)` would be routed to _Master_ only.**
The router stores all of the executed session commands so that in case of a slave failure, a replacement slave can be chosen and the session command history can be repeated on that new slave. This means that the router stores each executed session command for the duration of the session. Applications that use long-running sessions might cause MaxScale to consume a growing amount of memory unless the sessions are closed. This can be solved by setting a connection timeout on the application side.
#### Configuring the Read/Write Split router
Read/Write Split router-specific settings are specified in the configuration file of MaxScale in its specific section. The section can be freely named but the name is used later as a reference from listener section.