Invalidating cache

[gershido]

Hey, I'm meshing multiple graphql endpoints and using a redis cache via the response caching plugin. I'm trying to figure out the right way to invalidate cache entries for my scenario:

• What I'm meshing are subgraphs from The Graph, which index blockchain data, and so I don't have an access to the DBs themselves
• The graphql endpoints don't have mutations so invalidating via mutation is not relevant

My current thinking is listening to relevant smart contract events and then deleting the associated entries on the cache. I don't see a way to invalidate programmatically when using the mesh, something like in the image below. Is there another recommended way to handle that?