TelecomsXchange  HA Architecture:

What Is Sharding ?

Sharding is a scale-out approach in which database tables are partitioned, and each partition is put on a separate RDBMS server. For MySQL, this means each node is its own separate MySQL RDBMS managing its own separate set of data partitions. This data separation allows the application to distribute queries across multiple servers simultaneously, creating parallelism and thus increasing the scale of that workload. However, this data and server separation also creates challenges, including sharding key choice, schema design, and application rewrites. Additional challenges of sharding MySQL include data maintenance, infrastructure maintenance, and business challenges,.