András Bánki-Horváth

needs rebase

With `Prefetch` added the win is small but noticable using etcd. Should help more with postgres.

Please also make sure that `make check` runs correctly on your machine.

> Ready to remove the draft tag on this one? Yep, ready for a round of reviews imho. The thing I'm thinking about is if we want to speed up...

> Yeah, awesome PR indeed! I did a high-level code only review to get the gist of what's needed. Going to try and performance test this on mainnet to see...

> Amazing PR! > > TBH, I was a bit skeptical when you mentioned you were going with a more generic approach here vs a more context-specific cache for the...

Added support for a hybrid cache which is able to read-through and write-through nested (and top level) buckets. This will alow us to spare a lot of memory for huge...

> Adding this generic kv caching mechanism looks to me like one more step into the kv corner. I don't think this is a good thing to do if you...

Some more tests incoming, but until then feel free to add any new comments you might have.

Reworked the PR a bit to help getting https://github.com/lightningnetwork/lnd/pull/5642 in faster. Now the first 4 commits are pure refactors we likely will move into #5642 and the last 3 is...