A big problem with reselect.

[acrazing]

What the cache should be?

[acrazing]

1. If a selector is not marked as cacheable, it well always be recomputed
2. A cacheable selector should be created by selector(fn, cacheKey, type?)
3. Cache is in store, rather than in useSelector
4. the last result is always cached of a cacheable selector, with useSelector, every call of select should be called with select(current, previous) to drop the outdated caches.

[acrazing]

Think about the box:

How to work with mutable map?