Understand ProxySQL hostgroups: what they are, how they route MySQL traffic, common use cases, pitfalls, Galera cluster integration, and running multiple ProxySQL instances across data centers.
Learn how to use ProxySQL as a connection pooler between PHP applications and MySQL, dramatically reducing connection overhead and improving database scalability.
Master MySQL high availability from replication basics to multi-master Galera clusters, Percona XtraDB Cluster, ProxySQL query routing, backup strategies, and production monitoring with PMM.