Diary of an Engineer: Delivering 45x faster percentiles using Postgres, Citus, & t-digest
The Citus Data
SEPTEMBER 19, 2020
When working on the internals of Citus , an open source extension to Postgres that transforms Postgres into a distributed database, we often get to talk with customers that have interesting challenges you won’t find everywhere. Just a few months back, I encountered an analytics workload that was a really good fit for Citus. But we had one problem: the percentile calculations on their data (over 300 TB of data) could not meet their SLA of 30 seconds.
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