Severalnines Blog

Safe database change at fleet scale: canaries, maintenance waves, and recovery gates

November 6, 2026 Sebastian Insausti
A PostgreSQL minor update is about as boring as database maintenance gets. You stop the node, install the new binaries, and start it again. On one cluster, with someone watching, it rarely surprises anyone. Now do it on forty clusters at once. One of them pulls packages from a mirror...

Database Sharding: How Does it Work?

September 20, 2016 Krzysztof Ksiazek

Recovering your MongoDB Data

September 12, 2016 Art van Scheppingen

A Guide to MongoDB Backups

August 9, 2016 Art van Scheppingen

MongoDB Replication Lag Advisor

July 26, 2016 Art van Scheppingen