Write Amplification Explained in Backend Apps, Database Systems and SSDs
Apr 05, 2021•22 min
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Episode description
Write Amplification Is a phenomenon where the actual writes that physically happen are multiples of the actual writes desired. In this episode, I'll discuss 3 types of write amplifications and their effects on performance and lifetime of storage mediums.
0:00 intro
2:00 Application write amplification
4:30 Database write amplification
9:30 SSD Disk write amplification
16:00 SSD hates BTrees
20:00 summary
Resources
https://en.wikipedia.org/wiki/Write_amplification
https://www.cybertec-postgresql.com/en/hot-updates-in-postgresql-for-better-performance/
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