checkpointpostgres==1.0.4

langgraph-checkpoint-postgres 1.0.4

Summary of Changes

• Added support for connection pools through psycopg_pool, enabling better resource management in high-concurrency scenarios #1452
• Improved cursor handling with consistent use of dict_row factory #1433
• Optimized writes handling by using WRITES_IDX_MAP and removing unnecessary delete operations #1436
• Enhanced search functionality with better handling of checkpoint namespace and ID #1452

Detailed Changes

langgraph.checkpoint.postgres.PostgresSaver

• Now accepts a connection pool (ConnectionPool) in addition to direct connections (Connection) #1452
• Improved cursor handling with consistent use of dict_row as row factory #1433
• Enhanced list() method to include pending writes in returned checkpoint tuples #1436
• Removed DELETE_WRITES_SQL logic from put_writes() method for more efficient handling of writes #1436

langgraph.checkpoint.postgres.aio.AsyncPostgresSaver

• Added support for AsyncConnectionPool in addition to AsyncConnection #1452
• Improved cursor handling with consistent use of dict_row as row factory #1433
• Enhanced alist() method to include pending writes in returned checkpoint tuples #1436
• Removed DELETE_WRITES_SQL logic from aput_writes() method for more efficient handling of writes #1436

langgraph.checkpoint.postgres.base.BasePostgresSaver

• Added support for WRITES_IDX_MAP to properly index writes by channel #1436
• Enhanced _search_where() method with better handling of checkpoint namespace and ID parameters #1452