Have you been unhappy with the high-availability solutions for MySQL that are based on replication? At Percona, we have seen a number of problems with existing tools. Some people discussed using Heartbeat and Pacemaker instead, but the implementations were not suitable for the problems they tried to solve. Yves recently had an insight into a different approach to the problem, which can provide high availability, load balancing, and read-write splitting in one elegant solution.
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