Please read the previous post for a quick introduction to ProxySQL.
As stated earlier, ProxySQL is a powerful software load balancer and an open-source database protocol aware proxy for MySQL that provides high performance, high availability, and high availability.
ProxySQL’s query rewriting functionality may edit SQL statements on the fly, eliminating the requirement for the development team to rewrite queries generated by ORMs or bundled applications.
ProxySQL offers the ability to recognize reads and writes and route write traffic to the master and read traffic to the available slaves. Read traffic will be automatically diverted to a new slave server if there is a Replication delay, server breakdown, or replication breakage.
ProxySQL receives traffic from an application and routes it to the MySQL server in the backend. It distinguishes between “read” and “write” queries and sends writes to the master and reads to all three replicas. In case of a node failure, it redirects traffic to another highly available node. As a result, ProxySQL assures that no single point of failure exists. The program continues to function because ProxySQL routes traffic from the crashed server to another node. It is possible to maintain an optimal and efficient resource consumption by using an appropriate load balancing algorithm.
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