Memchache's problem.

1. Cache Hits (hit), this is well understood.
2. The cache is not read and returns FALSE.
3. So what is cache miss Ah? How could I not understand how this miss came about?

Reply content:

1. Cache Hits (hit), this is well understood.
2. The cache is not read and returns FALSE.
3. So what is cache miss Ah? How could I not understand how this miss came about?

But everything that get doesn't fetch data is counted miss

You can generally look at the source code of memcached, when processing GET request Process_get_command miss/hit statistics, and miss execution condition is to find the specified key does not exist or has expired.

Memcached is still a cache container, for the cache, there are only two get state hit, MISS, which is irrelevant to the return value.

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