feat: Change HashMap to ConcurrentMap

[wardseptember]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 70.03377%. Comparing base (6cfd3c3) to head (9a235d1).

Additional details and impacted files

@@                  Coverage Diff                  @@
##                master        #112         +/-   ##
=====================================================
- Coverage     70.03959%   70.03377%   -0.00582%     
+ Complexity        4267        4264          -3     
=====================================================
  Files              437         437                 
  Lines            17176       17176                 
  Branches          1737        1737                 
=====================================================
- Hits             12030       12029          -1     
- Misses            4029        4031          +2     
+ Partials          1117        1116          -1     

Files with missing lines	Coverage Δ
.../tencent/trpc/core/common/config/ClientConfig.java	75.64103% <100.00000%> (ø)

... and 1 file with indirect coverage changes

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