To what extent do developers need to master the database? For example, do java developers master MySQL?
The more developers master dB, the more things you can do.
Complete business functions and understand basic SQL statements.
Do performance optimization, understand index and engine.
Do sub database and sub table, understand master-slave, and understand the separation of reading and writing.
Do security, understand authority, backup and log.
Do cloud database, understand the source code and bottleneck.
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