Tag

Databases

2 articles · #Databases

Your Cache Hit Rate Looked Fine Until the Hour Mark

Redis did its job on every miss — your application just sent two hundred loaders to Postgres at once.

6 min · June 15, 2026

Pros-and-cons lists fail when Mongo needs `$lookup` for every report and Postgres JSONB rewrites the whole row on every sensor tick.

9 min · May 27, 2026