DjangoMySQLGunicorn

MySQL connection timeout causes 'server has gone away' errors during traffic spikes

critical
Connection ManagementUpdated Nov 12, 2025(via Exa)
Sources
Intermittent Database Connection Errors and Slow Page Loads on My Django Website - Deployment - Django Forumforum.djangoproject.com
Technologies:
Djangosubject
MySQLThe root cause of this issue originates in MySQL
GunicornGunicorn metrics correlate with this issue and help confirm diagnosis
How to detect:

Intermittent 'OperationalError: MySQL server has gone away' errors, especially during moderate traffic spikes. Pages take up to 10 seconds to load. Issues persist even after increasing CONN_MAX_AGE and wait_timeout.

Recommended action:

Decrease CONN_MAX_AGE or set it to 0 to prevent persistent connections from idling too long or being unexpectedly closed by MySQL. Gather logs from all sources (Gunicorn, syslog, MySQL, application) to identify system-level interference patterns during traffic spikes.