May 26, 2018

High performance Python adapter for PostgreSQL

psycopg2 is a PostgreSQL database adapter for the Python programming language. It was written from scratch with the aim of being small, fast and stable. It supports the full Python DBAPI-2.0 and is thread safe.

psycopg2 is different from the other database adapter because it was designed for heavily multi-threaded applications that create and destroy lots of cursors and make a conspicuous number of concurrent INSERTs or UPDATEs. Every open Python connection keeps a pool of real UNIX or TCP/IP connections to the database. Every time a new cursor is created, a new connection does not need to be opened; instead one of the unused connections from the pool is used. That makes psycopg very fast in typical client-server applications that create a servicing thread every time a client request arrives.

WWW http// WWW https//