When will my Valkey or Redis cache run out of memory? Sizing it with the Cache Size Simulator
used_memory tells you where you are, not where you're going. The Cache Size Simulator samples what your keys actually weigh, projects growth and TTLs forward, tells you when you hit maxmemory and what your eviction policy will do about it, and picks the smallest ElastiCache, MemoryDB, Memorystore or Azure node that still fits in six months. Works on Valkey, Redis OSS and other RESP-compatible databases.
Kristiyan Ivanov•