Resolving MySQL Index Selection Failures in High-Volume Tables
A significant production incident recent occurred involving a database table containing over 80 million records. During peak traffic, slow query logs spiked to 140,000 requests per minute, causing connection exhaustion and system-wide latency. The offending SQL statement followed this pattern:
SELECT
*
FROM
user_activity_logs
WHERE
r ...
Posted on Wed, 08 Jul 2026 16:54:42 +0000 by jamiet757