langgraph_agent_toolkit.core.memory.postgres module

class langgraph_agent_toolkit.core.memory.postgres.PostgresMemoryBackend

Bases: BaseMemoryBackend

PostgreSQL memory backend.

validate_config()

Validate that all required PostgreSQL configuration is present.

Return type:

bool

static get_connection_string()

Build the PostgreSQL connection string from settings.

Return type:

str

get_saver()

Yield a PostgreSQL saver in an asynchronous context.

Yields:

AsyncPostgresSaver – Database saver.

Return type:

AsyncGenerator[CoordinatedPostgresSaver, None]

get_store()

Yield a PostgreSQL store in an asynchronous context.

Yields:

AsyncPostgresStore – Database store.

Return type:

AsyncGenerator[CoordinatedPostgresStore, None]

get_checkpoint_saver()

Initialize and return a PostgreSQL saver.

Return type:

AbstractAsyncContextManager[CoordinatedPostgresSaver]

get_lock_pool()

Create a separate pool for long-running conversation locks.

get_memory_store()

Initialize and return a PostgreSQL store.

Return type:

AbstractAsyncContextManager[CoordinatedPostgresStore]