refactor: use atomic counter instead of mutex

[dundee]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 33.33333% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 85.45%. Comparing base (720cd5f) to head (ab146a1).
⚠️ Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
pkg/analyze/storage.go	33.33%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #597      +/-   ##
==========================================
- Coverage   85.45%   85.45%   -0.01%     
==========================================
  Files          55       55              
  Lines        6175     6173       -2     
==========================================
- Hits         5277     5275       -2     
  Misses        691      691              
  Partials      207      207              

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