Feature request: Check if thread ID is active

[Eirmas]

I'm trying to prevent users from double texting. I see that this is something LangGraph Cloud handles, but I'm hoping that this could be something that would be possible to do in plain LangGraph.

Maybe I'm missing some documentation and it is possible? How can one check if a thread ID is currently being processed?

[jacoblee93]

There's a few strategies, one being adding some kind of queue mechanism in front of your graph:

https://langchain-ai.github.io/langgraph/cloud/how-tos/enqueue_concurrent/

There currently isn't yet an API for detecting this in the core LangGraph library though.