November 2021
Intermediate to advanced
386 pages
11h 13m
English
Content preview from High Performance MySQL, 4th Edition
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Chapter 9. Replication
MySQL’s built-in replication is the foundation for building large, high-performance applications on top of MySQL, using the so-called “scale-out” architecture. Replication lets you configure one or more servers as replicas of another server, keeping their data synchronized with the source copy. This is not just useful for high-performance applications—it is also the cornerstone of many strategies for high availability, scalability, disaster recovery, backups, analysis, data warehousing, and numerous other tasks.
In this chapter, our focus is less on what each feature is and more on when to use it. The official MySQL documentation is exceptionally detailed at explaining what features like semisynchronous replication, multisource replication, and so on are, and you should refer to this documentation when setting up these features.
Replication Overview
The basic problem replication solves is keeping data synchronized among database instances within the same topology. It does this by writing events that modify data or data structure to a log on a source server. Replica servers can then read ...
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