Scaling heavy database usage with mysql Master Slave configuration

Number of Read Replica influence on Heavy database usage overview

Results Overview

Here I’m experimenting a way to scale a web site that generates an heavy workload on the database.
The idea is to separate the reads from the insert/update sql statements in order to dispatch the reads (select) statements on serveral servers.
I’m going to use a mysql Master / Slave configuration (Read replica).

In order to fully understand the way it will work, to eliminate a maximum of PHP execution impact and to facilitate the test, I decided to use micro PHP benchs made up of simple select and insert statements.
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