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docs: Change SqliteSaver to MemorySaver (#25306)

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fix: #25137

`SqliteSaver.from_conn_string()` has been changed to a `contextmanager`
method in `langgraph >= 0.2.0`, the original usage is no longer
applicable.

Refer to
<https://github.com/langchain-ai/langgraph/pull/1271#issue-2454736415>
modification method to replace `SqliteSaver` with `MemorySaver`.
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gbaian10 2024-08-13 01:45:32 +08:00 committed by GitHub
parent 1c9917dfa2
commit 5efd0fe9ae
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2 changed files with 8 additions and 8 deletions
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8
docs/docs/how_to/qa_chat_history_how_to.ipynb
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@ -721,9 +721,9 @@
"metadata": {}, "metadata": {},
"outputs": [], "outputs": [],
"source": [ "source": [
"from langgraph.checkpoint.sqlite import SqliteSaver\n", "from langgraph.checkpoint.memory import MemorySaver\n",
"\n", "\n",
"memory = SqliteSaver.from_conn_string(\":memory:\")\n", "memory = MemorySaver()\n",
"\n", "\n",
"agent_executor = create_react_agent(llm, tools, checkpointer=memory)" "agent_executor = create_react_agent(llm, tools, checkpointer=memory)"
] ]
@ -890,9 +890,9 @@
"from langchain_community.document_loaders import WebBaseLoader\n", "from langchain_community.document_loaders import WebBaseLoader\n",
"from langchain_openai import ChatOpenAI, OpenAIEmbeddings\n", "from langchain_openai import ChatOpenAI, OpenAIEmbeddings\n",
"from langchain_text_splitters import RecursiveCharacterTextSplitter\n", "from langchain_text_splitters import RecursiveCharacterTextSplitter\n",
"from langgraph.checkpoint.sqlite import SqliteSaver\n", "from langgraph.checkpoint.memory import MemorySaver\n",
"\n", "\n",
"memory = SqliteSaver.from_conn_string(\":memory:\")\n", "memory = MemorySaver()\n",
"llm = ChatOpenAI(model=\"gpt-3.5-turbo\", temperature=0)\n", "llm = ChatOpenAI(model=\"gpt-3.5-turbo\", temperature=0)\n",
"\n", "\n",
"\n", "\n",

8
docs/docs/tutorials/agents.ipynb
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@ -71,11 +71,11 @@
"from langchain_anthropic import ChatAnthropic\n", "from langchain_anthropic import ChatAnthropic\n",
"from langchain_community.tools.tavily_search import TavilySearchResults\n", "from langchain_community.tools.tavily_search import TavilySearchResults\n",
"from langchain_core.messages import HumanMessage\n", "from langchain_core.messages import HumanMessage\n",
"from langgraph.checkpoint.sqlite import SqliteSaver\n", "from langgraph.checkpoint.memory import MemorySaver\n",
"from langgraph.prebuilt import create_react_agent\n", "from langgraph.prebuilt import create_react_agent\n",
"\n", "\n",
"# Create the agent\n", "# Create the agent\n",
"memory = SqliteSaver.from_conn_string(\":memory:\")\n", "memory = MemorySaver()\n",
"model = ChatAnthropic(model_name=\"claude-3-sonnet-20240229\")\n", "model = ChatAnthropic(model_name=\"claude-3-sonnet-20240229\")\n",
"search = TavilySearchResults(max_results=2)\n", "search = TavilySearchResults(max_results=2)\n",
"tools = [search]\n", "tools = [search]\n",
@ -606,9 +606,9 @@
"metadata": {}, "metadata": {},
"outputs": [], "outputs": [],
"source": [ "source": [
"from langgraph.checkpoint.sqlite import SqliteSaver\n", "from langgraph.checkpoint.memory import MemorySaver\n",
"\n", "\n",
"memory = SqliteSaver.from_conn_string(\":memory:\")" "memory = MemorySaver()"
] ]
}, },
{ {