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...

Linking & Creating MongoDB Joins Using SQL: Part 1

November 6, 2018 Onyancha Brian Henry

Running ProxySQL as Kubernetes Service

October 30, 2018 Ashraf Sharif

How to Cluster Your ProxySQL Load Balancers

October 26, 2018 Krzysztof Ksiazek

Choosing a Database Proxy for MySQL & MariaDB

October 25, 2018 Forrest Lymburner

A Developer’s Guide to MongoDB Sharding

October 15, 2018 Onyancha Brian Henry