Python & Sqlalchemy - Connection pattern -> Disconnected from the remote server randomly

Question

I\'m using a python for my backend API server. My backend connect to a DISTANT Postgres database using SQLALCHEMY (without flask-sqlalchemy because i need that connector eve

Answer 1

@skapin, I had solve the problem.As the server connect sql need a paramteter pool_pre_ping. how to fix “OperationalError: (psycopg2.OperationalError) server closed the connection unexpectedly”

from flask_sqlalchemy import SQLAlchemy as _BaseSQLAlchemy

class SQLAlchemy(_BaseSQLAlchemy):
    def apply_pool_defaults(self, app, options):
        super(SQLAlchemy, self).apply_pool_defaults(self, app, options)
        options["pool_pre_ping"] = True

db = SQLAlchemy()