Django database/postgresql connection pool depleted

[Rafał Kośla]

Django by itself is not equipped with any tool to manage database(postgresql) connections and at some point when not provided by external tool the app itself is hitting connections to database limit which is displayed in the below error message.

Traceback (most recent call last): File "/usr/local/lib/python3.9/site-packages/django/db/backends/base/base.py", line 289, in ensure_connection self.connect() File "/usr/local/lib/python3.9/site-packages/django/utils/asyncio.py", line 26, in inner return func(*args, **kwargs) File "/usr/local/lib/python3.9/site-packages/django/db/backends/base/base.py", line 270, in connect self.connection = self.get_new_connection(conn_params) File "/usr/local/lib/python3.9/site-packages/django/utils/asyncio.py", line 26, in inner return func(*args, **kwargs) File "/usr/local/lib/python3.9/site-packages/django/db/backends/postgresql/base.py", line 275, in get_new_connection connection = self.Database.connect(**conn_params) File "/usr/local/lib/python3.9/site-packages/psycopg2/__init__.py", line 122, in connect conn = _connect(dsn, connection_factory=connection_factory, **kwasync) psycopg2.OperationalError: FATAL: remaining connection slots are reserved for non-replication superuser connections

Adding for example pgbouncer which manages connection pool resolves the issue.