I went back and read again. "ApsaraCache is based on the Redis official release 4.0 and has many features and performance enhancements" - I could find only memcache and performance improvement. Now Membache has nothing to do with Redis, its something not improving Redis, and 30% performance improvement is very vague statement with no other supporting benchmarks and documents. When they say many, I can't see any other than these two.