Zend OPCache enabled but Cache hits 0


Why I have always zero hits?

I’m using

PHP Version 7.2.15 + drupal cache + https://www.drupal.org/project/filecache

Zend OPcache
Opcode Caching	Up and Running
Optimization	Enabled
Startup	OK
Shared memory model	mmap
Cache hits	0
Cache misses	139
Used memory	28352720
Free memory	105865008
Wasted memory	0
Interned Strings Used memory	1248640
Interned Strings Free memory	7139968
Cached scripts	139
Cached keys	139
Max keys	7963
OOM restarts	0
Hash keys restarts	0
Manual restarts	0

Any ideas?

Drupal version: 

Source: https://www.drupal.org/taxonomy/term/22/feed