SQLAlchemy with postgres: crash sqlalchemy connection with thread parallelism,

[Ramin Farajpour Cami]

Hi, 

I'm was testing the project by fastapi + sqlalchemy, i write golang code for sending thread parallelism to the my API endpoint, I found a problem, in the sqlalchemy many requests fail, 

this is my config : 

SQLALCHEMY_DATABASE_URL = config("DATABASE_URL")
engine = create_engine(SQLALCHEMY_DATABASE_URL)
SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)

I took a video of this problem,

https://drive.google.com/file/d/1rgd_GBwRQHmiv-C-26luFfESKIByQP4U/view?usp=sharing

We do not know exactly how to solve the problem. sqlalchemy must cover many requests connection.

Thanks,

Ramin

[Jonathan Vanasco]

Please submit a "Short, Self Contained, Correct (Compilable), Example" along with any potential bug reports.

http://sscce.org/