Why SELECT COUNT(*) FROM TABLE Is Sometimes Very Slow in MySQL or MariaDBIf you have enough experience with MySQL, it is very possible that you stumbled upon an unusually slow SELECT COUNT(*) FROM TABLE; query execution, at least occasionally. Recently, I had a chance to investigate some of these cases closer, and it stunned me what huge differences there can be depending on the circumstance given the very same table. As the problem turned out to be much more complex t
Scaling PostgreSQL with PgBouncer: You May Need a Connection Pooler
