Hi all, I am writing a Flask API that needs to communicate with many datastores, Postgres on AWS RDS being one of them. I want to avoid Flask-SQLAlchemy (trying to reduce package dependence); I think the standard SQLAlchemy library should suffice. I have described the issue thoroughly here <https://stackoverflow.com/questions/50669231/sqlalchemy-sessions-keep-dropping-after-a-few-minutes> (code is here as well). But here is the synopsis. When I use a Session object in my app, for the first few requests, it works great. Then, if I wait for a while and fire off another request, I get a Psycopg2 error about the server closing off the connection unexpectedly. This is rather crippling. I have spent a lot of time going through SO, asked in the SQLAlchemy IRC channel, and tried many tutorials, and this seems to be a standard valid pattern, so I am not sure what is going wrong. Should I not be removing the session? Should I be using the @app.teardown_appcontext decorator (it seems that if I just remove the sessions myself as I am doing now, I shouldn't have to)? Should I be using a connection pool instead (it seems that QueuePool is enabled under the hood by default anyway)? If it helps, I am using the latest version of all packages, Python 3.6.5, and Postman to send the requests to the server, which is running at localhost:5000. Any advice would be much appreciated - thanks in advance!
Best, rvd -- SQLAlchemy - The Python SQL Toolkit and Object Relational Mapper http://www.sqlalchemy.org/ To post example code, please provide an MCVE: Minimal, Complete, and Verifiable Example. See http://stackoverflow.com/help/mcve for a full description. --- You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/sqlalchemy. For more options, visit https://groups.google.com/d/optout.
