Taking the Pain Out of MySQL Schema Changes

Taking the Pain Out of MySQL Schema Changes” covers the following approaches to deploying MySQL schema changes:

  1. Schema Change in Downtime
  2. Role Swap (cluster setup)
  3. pt-online-schema-change

The last one is the usage of pt-online-schema-change tool developed by Percona guys, as part of their Percona Toolkit – an Open Source set of command-line tools for MySQL.

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