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16 Commits
Author SHA1 Message Date
Sydney RunkleandGitHub 2d3121a17c chore: drop Python 3.9 (and syntax) (#6289) 
* `strict=False` is the default, pyupgrade to min version 3.10 adds this
to be explicit w/ behavior
 2025-10-16 20:17:46 -04:00
github-actions[bot]GitHubsydney-runkleSydney Runkle
 		8b55dff7a5 chore(deps): upgrade dependencies with uv lock --upgrade (#6146) 
This PR updates the dependencies in all Python packages using `uv lock
--upgrade`.

This is an automated PR created by the UV Lock Upgrade workflow.

To make tests pass:
* linting fixes
* whitespace fixes in snapshots

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Co-authored-by: sydney-runkle <54324534+sydney-runkle@users.noreply.github.com>
Co-authored-by: Sydney Runkle <sydneymarierunkle@gmail.com>
 2025-09-14 19:36:43 -04:00
Nuno Campos 21906d2b7b Add migration for pending_sends 
- Checkpoints saved on older versions of langgraph will be compatible with langgraph 0.5 and 1.0
 2025-06-13 17:42:14 -07:00
Nuno Campos 46b652a74c Use incremental storage in memory checkpointer 
- This makes our checkpoint benchmarks more closely resemble the behavior of our prod checkpointers
- Also found and fixed a bug w multiple subgraphs in same node accidentally sharing checkpoints
 2025-03-20 16:11:36 -07:00
William FHandGitHub 3daa4ae466 Update name to InMemorySaver (#2044) 
(Keep MemorySaver around for backwards compatibility)

"MemorySaver" is ambiguous: is it saving memories? Where is it saving
memories to?

InMemorySaver aligns naming InMemoryStore as well as similar LangChain
objects (InMemoryVectorStore, etc.)
 2025-02-05 22:04:25 -08:00
Nuno CamposGitHubWilliam Fu-Hinthorn
 		886df0fa86 checkpoint: Add option to use persistent dict for in-memory checkpointer (#2439) 
- This should only be used in very specific circunstances, sqlite or
postgres adapters much more appropriate in most circunstances

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Co-authored-by: William Fu-Hinthorn <13333726+hinthornw@users.noreply.github.com>
 2024-11-18 16:04:05 +00:00
Nuno Campos 330c91f622 Update ruff 2024-08-27 10:50:39 -07:00
Nuno Campos 82db383199 Don't try to serialize exceptions 
- Store their string repr instead
 2024-08-22 21:36:27 -07:00
Nuno Campos 45e3d1a3f1 Test all checkpointers everywhere we test 1 of them 2024-08-22 13:51:38 -07:00
Vadym BardaGitHubNuno Campos
 		b37f78942d checkpoint-postgres: new library for postgres checkpointer implementation (#1236) 
* checkpoint-postgres: new library for postgres checkpointer implementation

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Co-authored-by: Nuno Campos <nuno@langchain.dev>
 2024-08-06 22:37:06 -04:00
Vadym BardaGitHubNuno Campos
 		4b2187c9a3 checkpoint: switch thread_ts -> checkpoint_id, add checkpoint_ns, change serializer protocol (#1185) 
---------

Co-authored-by: Nuno Campos <nuno@langchain.dev>
 2024-08-02 01:08:19 +00:00
William Fu-Hinthorn f5b9e463e3 Merge branch 'main' into wfh/test_pending_writes_null 2024-07-23 21:28:51 -07:00
William Fu-Hinthorn 36505d9656 Add test 2024-07-23 21:15:53 -07:00
Nuno Campos ee7cab664a Fix checkpoint put ordering issue 2024-07-22 17:52:09 -07:00
Nuno Campos 98a962661b Instead of saving an additional interrupt checkpoint, make child graphs keep a single checkpoint for each parent checkpoint 
- while the inner graph makes progress it overwrites the partial progress checkpoints, eventually keeping only one for each outer step
- implement parent_config in MemorySaver
- fix edge cases in PregelLoop
 2024-07-22 16:32:15 -07:00
vbarda 1a06d500d4 libs: add cli, sdk-py, sdk-js and move core langgraph 2024-06-17 20:37:25 -04:00