Menu

LangGraph Checkpoint

Checkpoint Postgres

Checkpoint SQLite

LangGraph Prebuilt

LangGraph Supervisor

LangGraph Swarm

Language

Theme

Class●Since v2.0

PoolConfig

Connection pool settings for PostgreSQL connections.

Controls connection lifecycle and resource utilization:

Small pools (1-5) suit low-concurrency workloads
Larger pools handle concurrent requests but consume more resources
Setting max_size prevents resource exhaustion under load

PoolConfig()

Bases

TypedDict

Constructors

constructor

__init__

Name	Type
min_size	int
max_size	int \| None
kwargs	dict

Attributes

Minimum number of connections maintained in the pool. Defaults to 1.

max_size: int | None

Maximum number of connections allowed in the pool. None means unlimited.

Additional connection arguments passed to each connection in the pool.

Default kwargs set automatically:

autocommit: True
prepare_threshold: 0
row_factory: dict_row

View source on GitHub