2.5 KiB
2.5 KiB
@colmmacc on Twitter: shuffle sharding
- 期号: SRE Weekly Issue #138（2018-09-09）
- 作者: Colm MacCárthaigh — AWS (thanks to Thread Reader for the thread rollup)
- 链接: https://threadreaderapp.com/thread/1034492056968736768.html?utm_source=last_week_in_AWS&utm_medium=newsletter&utm_campaign=website&utm_source=Last%20Week%20in%20AWS&utm_medium=email
简介
Colm MacCárthaigh explains how shuffle sharding improves reliability by acting like some kind of magic lever made of math.
正文
gist.github.com/colmmacc/4a39a…. Try it for Route 53's numbers. There are 2048 Route 53 virtual name servers, and each hosted zone is assigned to 4. So n = 2048, and m = 4.
en.wikipedia.org/wiki/Lottery_m…has good background on how we then come to this equation ...
