In-memory cache?

[msmith-techempower]

I am trying to do something that feels like it should be relatively simple:

I have an application with a number of services who all consume from shared app_data. This is an Arc<RwLock<SomeType>> - basically every thread used to service http requests should be able to acquire a read lock, copy the data, and release the lock.

The next step, where I am stuck, is that I want to have a persistent worker that runs, can acquire the write lock (waiting/blocking until all the read locks release), update the cache, release the write lock, and run again after 10 seconds (for example).

I was trying to follow the example code here but found myself down a rabbit hole trying to implement storage for my Arc<....> and that felt wrong.

[msmith-techempower]

I think I figured this out - I was being silly... just clone the Arc again and move each into their respective contexts.