Enum Raced 

enum Raced<T> {
    Cache(T),
    Server(T),
    Fallback(T),
    Failed(RepoError),
}

Outcome of racing a cache read that missed the fast path against the server. See HybridRepository::race_slow_cache.

Variants

Cache(T)

The cache answered first with something to show (exclusions applied).

Server(T)

The server answered first, or the cache had nothing. Raw: the caller caches the full page and applies exclusions to what it returns.

Fallback(T)

The server failed; this is what the cache said instead (exclusions applied), possibly an empty listing — which still beats an error.

Failed(RepoError)

Neither could answer; the server’s error.