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Add sqlalchemy pool_pre_ping option #4087

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Add sqlalchemy pool_pre_ping option #4087

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6 changes: 5 additions & 1 deletion aleph/core.py
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Expand Up @@ -37,7 +37,11 @@
NONE = "'none'"
log = logging.getLogger(__name__)

db = SQLAlchemy()
# This allow to prevent http 500 error when postgres session is invalid
# see: https://docs.sqlalchemy.org/en/20/core/pooling.html#disconnect-handling-pessimistic
SQLALCHEMY_ENGINE_OPTIONS = {"pool_pre_ping": True}
db = SQLAlchemy(engine_options=SQLALCHEMY_ENGINE_OPTIONS)

migrate = Migrate()
mail = Mail()
babel = Babel()
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