April 2010
Intermediate to advanced
276 pages
6h 16m
English
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Replication safety tricks
MySQL replication in anything but an extremely simple setup with one master handling every single "write". A guarantee of no writes being made to other nodes is highly prone to a couple of failures. In this recipe, we look at the most common causes of replication failure that can be prevented with some useful tricks.
This section shows how to solve auto increment problems in multi-master setups, and also how to prevent the data on MySQL servers, which you wish should remain read-only, from being changed (a common cause of a broken replication link). Auto-increment is the single largest cause of problems.
It is not difficult to see that it is not possible to have more than one server handling asynchronous writes when auto-increments ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.