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To avoid problems with inactive DB connections, SQLAlchemy provides a `pool_pre_ping` option, that described in more detail here: http://docs.sqlalchemy.org/en/latest/core/pooling.html#disconnect-handling-pessimistic In flask environments, it's enabled by subclassing SQLAlchemy, which is what I've done here. Fixes errors like: sqlalchemy.exc.OperationalError: (_mysql_exceptions.OperationalError) (2006, 'MySQL server has gone away') which results in an Error 500 in the UI. |
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| __init__.py | ||
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| models.py | ||
| views.py | ||