SQLAlchemy error MySQL server has gone away

Question

Error OperationalError: (OperationalError) (2006, \'MySQL server has gone away\') i\'m already received this error when i coded project on Flask, but i cant underst

Answer 1

I just faced the same problem, which is solved with some effort. Wish my experience be helpful to others.

Fallowing some suggestions, I used connection pool and set pool_recycle less than wait_timeout, but it still doesn't work.

Then, I realized that global session maybe just use the same connection and connection pool didn't work. To avoid global session, for each request generate a new session which is removed by Session.remove() after processing.

Finally, all is well.