Slow Query Logs and Performance Tuning
When a database feels slow, guessing at the cause wastes time. Databases can record exactly which queries are taking too long, and that slow query log is the starting point for nearly all performance tuning.
This article explains how we find and fix slow queries rather than throwing hardware at the problem.
Finding the Culprits
The slow query log captures any query that exceeds a threshold, along with how often it runs. A query that takes a second but runs thousands of times is often a bigger problem than one that takes ten seconds once a day.
Common Fixes
- Add a missing index so the database stops scanning every row.
- Rewrite the query to fetch only what is needed.
- Reduce repeated calls by caching or batching.
- Adjust the schema if a structure is fighting the workload.
Measure, Change, Measure
We always confirm an improvement with real numbers before and after. Tuning by intuition alone risks fixing the wrong thing, so evidence guides every change.
If you need a hand with any of this, your Progressive Robot delivery team is ready to help. Raise a ticket from the Support area of your client portal or speak to your account manager and we will guide you through the next steps.