How Twitter search works

Apropos of nothing, I keep thinking about this interview my former coworker Nick Canzoneri sent me a while back. Former Twitter search engineer Nico Tonozzi discusses Twitter search stack, including some custom code they wrote for Lucene to enable updating posting lists in memory.

https://blog.twitter.com/engineering/en_us/topics/infrastructure/2020/reducing-search-indexing-latency-to-one-second