Prevent synchronized demand spikes that overwhelm backends. Use when implementing caching with TTL expiry, scheduling cron jobs, handling reconnection after failures, warming caches on startup, or invalidating cache entries. Activates on patterns like check-cache-miss-fetch-store without locking, fixed TTLs on popular keys, cron expressions at round times like :00 or :30, cache.clear() or cache.delete() on hot keys, or reconnection logic without jitter.