refactor: use ULIDs instead of uuids

langgraph/store/redis/__init__.py

@@ -5,7 +5,6 @@
 import asyncio
 import json
 import math
-import uuid
 from contextlib import contextmanager
 from datetime import datetime, timezone
 from typing import Any, Iterable, Iterator, Optional, Sequence, cast
@@ -14,6 +13,7 @@
 from redisvl.query import FilterQuery, VectorQuery
 from redisvl.redis.connection import RedisConnectionFactory
 from redisvl.utils.token_escaper import TokenEscaper
+from ulid import ULID
 
 from langgraph.store.base import (
     BaseStore,
@@ -223,7 +223,7 @@ def _batch_put_ops(
         # Generate IDs for PUT operations
         for _, op in put_ops:
             if op.value is not None:
-                generated_doc_id = uuid.uuid4().hex
+                generated_doc_id = str(ULID())
                 namespace = _namespace_to_text(op.namespace)
                 doc_ids[(namespace, op.key)] = generated_doc_id
 

langgraph/store/redis/aio.py

@@ -2,7 +2,6 @@
 
 import asyncio
 import json
-import uuid
 import weakref
 from contextlib import asynccontextmanager
 from datetime import datetime, timezone
@@ -13,6 +12,7 @@
 from redisvl.query import FilterQuery, VectorQuery
 from redisvl.redis.connection import RedisConnectionFactory
 from redisvl.utils.token_escaper import TokenEscaper
+from ulid import ULID
 
 from langgraph.store.base import (
     BaseStore,
@@ -398,7 +398,7 @@ async def _batch_put_ops(
         # Generate IDs for PUT operations
         for _, op in put_ops:
             if op.value is not None:
-                generated_doc_id = uuid.uuid4().hex
+                generated_doc_id = str(ULID())
                 namespace = _namespace_to_text(op.namespace)
                 doc_ids[(namespace, op.key)] = generated_doc_id
 

pyproject.toml

@@ -13,6 +13,7 @@ python = ">=3.9,<3.13"
 langgraph-checkpoint = "^2.0.10"
 redisvl = "^0.3.7"
 redis = "^5.2.1"
+python-ulid = "^3.0.0"
 
 [tool.poetry.group.dev.dependencies]
 ruff = "^0.6.2"

tests/test_async_store.py

@@ -1,6 +1,5 @@
 """Tests for AsyncRedisStore."""
 
-import uuid
 from typing import Any, AsyncGenerator, Dict, Sequence, cast
 
 import pytest
@@ -9,6 +8,7 @@
 from langchain_core.runnables import RunnableConfig
 from langchain_openai import OpenAIEmbeddings
 from redis.asyncio import Redis
+from ulid import ULID
 
 from langgraph.checkpoint.redis import AsyncRedisSaver
 from langgraph.constants import START
@@ -525,7 +525,7 @@ def call_model(
             # Store new memories if the user asks the model to remember
             if "remember" in last_message.content.lower():  # type:ignore[union-attr]
                 memory = "User name is Bob"
-                store.put(namespace, str(uuid.uuid4()), {"data": memory})
+                store.put(namespace, str(ULID()), {"data": memory})
 
             messages = [{"role": "system", "content": system_msg}]
             messages.extend([msg.model_dump() for msg in state["messages"]])

tests/test_store.py

@@ -1,4 +1,3 @@
-import uuid
 from typing import Any, Dict, Sequence, cast
 
 import pytest
@@ -7,6 +6,7 @@
 from langchain_core.runnables import RunnableConfig
 from langchain_openai import OpenAIEmbeddings
 from redis import Redis
+from ulid import ULID
 
 from langgraph.checkpoint.redis import RedisSaver
 from langgraph.graph import START, MessagesState, StateGraph
@@ -464,7 +464,7 @@ def call_model(
             # Store new memories if the user asks the model to remember
             if "remember" in last_message.content.lower():  # type:ignore[union-attr]
                 memory = "User name is Bob"
-                store.put(namespace, str(uuid.uuid4()), {"data": memory})
+                store.put(namespace, str(ULID()), {"data": memory})
 
             messages = [{"role": "system", "content": system_msg}]
             messages.extend([msg.model_dump() for msg in state["messages"]])