alt Hacker NewsGorilla by Facebook had this. Value is stored as delta and time as delta of delta.
Replies
lokar • yesterday at 6:17 PM
They say they are using “gorilla compression “
I’m still amazed every time I go back and read how the compression for floating point values works.
It's used in ClickHouse as well. CH supports all known compression algos and they are documented pretty well.