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Displaying posts with tag: MySQL 5.7.4 DMR (reset)

Semi-Sync replication performance in MySQL 5.7.4 DMR
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I was interested to hear about semi-sync replication improvements in MySQL’s 5.7.4 DMR release and decided to check it out.  I previously blogged about poor semi-sync performance and was pretty disappointed from semi-sync’s performance across WAN distances back then, particularly with many client threads.

The Test

The basic environment of these tests was:

  • AWS EC2 m3.medium instances
  • Master in us-east-1, slave in us-west-1 …
  [Read more...]
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