• Pseudo GTID, ASCENDING

    July 29, 2015

    Pseudo GTID is a technique where we inject Globally Unique entries into MySQL, gaining GTID abilities without using GTID. It is supported by orchestrator and described in more detail here, here and here. Quick recap: we can join two slaves to replicate from one another even if they never were in parent-child relationship, based on our […]

  • What makes a MySQL server failure/recovery case?

    July 25, 2015

    Or: How do you reach the conclusion your MySQL master/intermediate-master is dead and must be recovered? This is an attempt at making a holistic diagnosis of our replication topologies. The aim is to cover obvious and not-so-obvious crash scenarios, and to be able to act accordingly and heal the topology. At Booking.com we are dealing with […]

 
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