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...

ClickHouse Scaling and Sharding Best Practices

February 6, 2026 Sucahyo Ardy Prasetiyo

Introduction to MariaDB Vector Search

December 29, 2025 Ashraf Sharif

How ClusterControl Saved Christmas – Part 6

December 18, 2025 Cassel Moschetto

How ClusterControl Saved Christmas – Part 5

December 16, 2025 Cassel Moschetto

How ClusterControl Saved Christmas – Part 4

December 12, 2025 Cassel Moschetto

How ClusterControl Saved Christmas – Part 3

December 9, 2025 Cassel Moschetto

How ClusterControl Saved Christmas – Part 2

December 5, 2025 Cassel Moschetto

How ClusterControl Saved Christmas – Part 1

December 2, 2025 Cassel Moschetto