Case study
MariaDB slow queries causing SaaS dashboard timeouts
Database performance issues can make a SaaS product feel unreliable even when the application server is still online. The priority is to identify expensive queries, resource pressure and safe tuning changes without risking production data.
Context
A SaaS dashboard started timing out during normal customer use, especially when loading reports and admin views.
The application was still running, but database response times had become unpredictable and customer-facing pages were intermittently slow.
The problem
- Slow queries were affecting dashboard and reporting pages during busy periods.
- The database server showed signs of CPU and memory pressure under normal application load.
- Indexes, table sizes and query patterns needed to be reviewed before changing server configuration.
- The customer needed a practical improvement plan rather than risky trial-and-error changes.
Our approach
- Reviewed MariaDB version, server resources, configuration, table sizes, indexes and slow query output where available.
- Identified query patterns and application routes most likely to cause dashboard delays.
- Recommended safe indexing, query review and configuration changes based on the observed workload.
- Checked backup and rollback considerations before suggesting production database changes.
Practical outcomes
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