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📕 What is Doublewrite buffer?
The InnoDB double write buffer helps recover from half-written pages. Whenever InnoDB flushes a page from the buffer pool, it is first written to the double write buffer. Only if the buffer is safely flushed to the disk, will InnoDB write the pages to the disk. So that when InnoDB detects the corruption from the mismatch of the checksum, it can recover from double write buffer. The PostgreSQL equivalent is full-page writes.
Safer and faster database change and version control for DBAs and Developers
Bytebase is an open source, web-based database schema change and version control tool for teams. It offers a web-based collaboration workspace to help DBAs and Developers manage the lifecycle of application database schemas.