Fix Slow MySQL Queries: Log, EXPLAIN & Index Optimization
You hit refresh on a slow dashboard query and watch the seconds tick. The fix isn’t a hardware upgrade—it’s a combination of logging, analysis, and index tuning that MySQL already supports, yet the default long_query_time sits at 10 seconds (CoderPad (development blog)) with the slow query log switched off (Percona (MySQL consulting)), meaning many sluggish … Read more