[Mediawiki-l] Mediawiki clusters

[Brion Vibber]

Daniel J McDonald wrote:
> With replication, there is only one writeable node.  How do you force
> mediawiki to do reads from replica #n and writes to the master?

Code that works with the database asks the load balancer for a database
connection object that's either the master (for write or time-sensitive read
work) or a randomly selected not-too-lagged slave (for non-sensitive read work).

See LoadBalancer.php.

-- brion vibber (brion @ pobox.com)

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