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...

A Guide to MySQL User Management

October 26, 2015 Ashraf Sharif

Updating Your MySQL Configuration

October 22, 2015 Ashraf Sharif

Optimizer Hints for Faster MySQL Query Execution

October 22, 2015 Krzysztof Ksiazek

Using Explain to Improve SQL Query Performance

October 19, 2015 Krzysztof Ksiazek

ClusterControl 1.2.11 Released

October 13, 2015 Jean-Jérôme Schmidt

An Overview of MySQL Database Indexing

October 1, 2015 Krzysztof Ksiazek