langchain

c9ff0ab2 - Cassandra support for LLM cache (exact-match and semantic) (#9772)

Cassandra support for LLM cache (exact-match and semantic) (#9772) This PR implements two new classes in the cache module: `CassandraCache` and `CassandraSemanticCache`, similar in structure and functionality to their Redis counterpart: providing a cache for the response to a (prompt, llm) pair. Integration tests are included. Moreover, linting and type checks are all passing on my machine. Dependencies: the `pyproject.toml` and `poetry.lock` have the newest version of cassIO (the very same as in the Cassandra vector store metadata PR, submitted as #9280). If I may suggest, this issue and #9280 might be reviewed together (as they bring the same poetry changes along), so I'm tagging @baskaryan who already helped out a little with poetry-related conflicts there. (Thank you!) I'd be happy to add a short notebook if this is deemed necessary (but it seems to me that, contrary e.g. to vector stores, caches are not covered in specific notebooks). Thank you! --------- Co-authored-by: Harrison Chase <hw.chase.17@gmail.com>