https://www.youtube.com/watch?v=siV5pr44FAI

A very nice talk by @LGnome on the differences in performance by five different non-cryptographic hash functions: FNV-1A, CRC32, MurMurHash3, XXHash and CityHash32.

Key points:

• Know your inputs (small data, small variance vs large corpus of random data)
• Know your environment (implementation in C vs higher level language)
• If you have a standard library hash function, most often just use it and don't roll your own!

(via https://twitter.com/binitamshah/status/699102612608561152)