What is the functional purpose of database sharding technology?

Database sharding is a method of horizontally partitioning data into parts (shards) that are stored on different servers or nodes. The main functional purpose of sharding is to increase the scalability and performance of the system by distributing the load and data volume.

Advantages of sharding:

• Reducing the load on a single server
• Parallel processing of requests to different shards
• Ability to store large volumes of data exceeding the capacity of a single server

For example, in a distributed system with millions of users, data can be divided based on geographic location or by a range of identifiers to enable faster and more reliable query processing.