More brainstorming on memory-redis
	modified:   w3v/system/collections/backtrace.d
	modified:   w3v/system/collections/hook.d
	modified:   w3v/system/memory/algorithm/lru.d
	modified:   w3v/system/memory/memory.d
	modified:   w3v/system/memory/storage/redis.d
	new file:   w3v/system/utils/event.d