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Allow to configure a database replica

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Raphael Michel
2019-02-14 10:14:12 +01:00
parent 55841ea660
commit 7ed35e06ba
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doc/admin/config.rst
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@@ -125,6 +125,23 @@ Example::
Indicates if the database backend is a MySQL/MariaDB Galera cluster and
turns on some optimizations/special case handlers. Default: ``False``
Database replica settings
-------------------------
If you use a replicated database setup, pretix expects that the default database connection always points to the primary database node.
Routing read queries to a replica on databse layer is **strongly** discouraged since this can lead to inaccurate such as more tickets
being sold than are actually available.
However, pretix can still make use of a database replica to keep some expensive queries with that can tolerate some latency from your
primary database, such as backend search queries. The ``replica`` configuration section can have the same settings as the ``database``
section (except for the ``backend`` setting) and will default back to the ``database`` settings for all values that are not given. This
way, you just need to specify the settings that are different for the replica.
Example::
[replica]
host=192.168.0.2
URLs
----