chore: add metrics to cache implementations to try them out

[miparnisari]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 16.32653% with 41 lines in your changes missing coverage. Please review.
✅ Project coverage is 74.41%. Comparing base (ce59421) to head (f0c44c8).
⚠️ Report is 3 commits behind head on main.

Files with missing lines	Patch %	Lines
pkg/cache/cache_theine.go	0.00%	20 Missing ⚠️
pkg/cache/cache_otter.go	0.00%	12 Missing ⚠️
pkg/cmd/server/cacheconfig.go	0.00%	8 Missing ⚠️
pkg/cache/cache.go	80.00%	1 Missing ⚠️

❌ Your project check has failed because the head coverage (74.41%) is below the target coverage (75.00%). You can increase the head coverage or adjust the target coverage.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2874      +/-   ##
==========================================
- Coverage   74.44%   74.41%   -0.02%     
==========================================
  Files         484      484              
  Lines       57764    57811      +47     
==========================================
+ Hits        42995    43015      +20     
- Misses      11757    11787      +30     
+ Partials     3012     3009       -3     

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