Companion databases

Nikolay and Michael discuss companion databases — when and why you might want to add another database management system to your stack (or not), and some specifics for analytics, timeseries, search, and vectors. 
 
Here are some links to things they mentioned:

• Heap were using Postgres + Citus for analytics as of 2022 https://www.heap.io/blog/juggling-state-machines-incident-response-and-data-soup-a-glimpse-into-heaps-engineering-culture 
• Heap recently moved their core analytics to SingleStore (we only spotted this after recording 🤦‍♂️) https://www.heap.io/blog/heaps-next-generation-data-platform 
• Posthog moved their analytics from Postgres to Clickhouse https://posthog.com/blog/clickhouse-vs-postgres 
• Timescale https://www.timescale.com/ …

databases postgres postgresql sql technology