class CassandraChatMessageHistoryconst chatHistory = new CassandraChatMessageHistory({
cloud: {
secureConnectBundle: "<path to your secure bundle>",
},
credentials: {
username: "token",
password: "<your Cassandra access token>",
},
keyspace: "langchain",
table: "message_history",
sessionId: "<some unique session identifier>",
});
const chain = new ConversationChain({
llm: new ChatOpenAI({ model: "gpt-4o-mini" }),
memory: chatHistory,
});
const response = await chain.invoke({
input: "What did I just say my name was?",
});
console.log({ response });Class for storing chat message history within Cassandra. It extends the BaseListChatMessageHistory class and provides methods to get, add, and clear messages.