PgBouncer - Lightweight connection pooler for PostgreSQL

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PgBouncer is a lightweight connection pooler for PostgreSQL. It supports Session pooling, Transaction pooling, Statement pooling. It is not tied to one backend server. The destination databases can reside on different hosts. It has low memory requirements (2 kB per connection by default). This is because PgBouncer does not need to see full packets at once.

https://www.pgbouncer.org
https://github.com/pgbouncer/pgbouncer

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