lookup

Example:

cache = RedisCache(redis_url="redis://localhost:6379")
prompt = "What is the capital of France?"
llm_string = "openai/gpt-3.5-turbo"

result = cache.lookup(prompt, llm_string)
if result:
    print("Cache hit:", result[0].text)
else:
    print("Cache miss")

Note:

• The method uses an MD5 hash of the prompt and llm_string to create the cache key.
• The cached value is stored as JSON and parsed back into a Generation object.
• If the key exists but the value is None or cannot be parsed, None is returned.
• This method is typically called internally by LangChain, but can be used directly for manual cache interactions.