Type Alias WakeQueue 

type WakeQueue = BinaryHeap<Reverse<(Instant, Destination)>>;

Per-worker retry timer keyed by earliest-retry deadline and destination.

Every federation, appservice, or push failure arms an entry. Traffic-triggered retries can leave stale entries, which skip an in-flight transaction or replay a waiting one. Multiple entries may therefore remain for one destination.

Aliased Type

struct WakeQueue { /* private fields */ }