April 2018
Intermediate to advanced
508 pages
15h 22m
English
Content preview from PostgreSQL 10 High Performance - Third Edition
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Crash recovery and the buffer cache
If you had to write out every database change to disk immediately after it's made, the database performance would really suffer. This is particularly true on blocks that you change all the time, which would then be written very often. But, you have to be able to recover if the server crashes before things are written out completely too. Periodic database checkpoints take care of that.
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