Method evictIfNeeded

cache/subcache.go:618–642

evictIfNeeded will evict an entity from the cache if needed

()

// evictIfNeeded will evict an entity from the cache if needed
func (sc *SubCache[EntityT, ExcerptT, CacheT]) evictIfNeeded() {
	sc.mu.Lock()
	defer sc.mu.Unlock()
	if sc.lru.Len() <= sc.maxLoaded {
		return
	}

	for _, id := range sc.lru.GetOldestToNewest() {
		b := sc.cached[id]
		if b.NeedCommit() {
			continue
		}

		// as a form of assurance that evicted entities don't get manipulated, we lock them here.
		// if something tries to do it anyway, it will lock the program and make it obvious.
		b.Lock()

		sc.lru.Remove(id)
		delete(sc.cached, id)

		if sc.lru.Len() <= sc.maxLoaded {
			return
		}
	}
}