Add expiration time customization to the cache

[lubo-svk]

No description provided.

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

100.0% Coverage
0.0% Duplication

[codecov-commenter]

Codecov Report

Merging #402 (91589ac) into master (17bbcc3) will increase coverage by 0.02%.
The diff coverage is 87.50%.

❗ Current head 91589ac differs from pull request most recent head 697798c. Consider uploading reports for the commit 697798c to get more accurate results

@@            Coverage Diff             @@
##           master     #402      +/-   ##
==========================================
+ Coverage   70.59%   70.61%   +0.02%     
==========================================
  Files          68       68              
  Lines        5747     5748       +1     
==========================================
+ Hits         4057     4059       +2     
+ Misses       1292     1291       -1     
  Partials      398      398              

Impacted Files	Coverage Δ
net/blockwise/blockwise.go	69.00% <50.00%> (ø)
pkg/cache/cache.go	94.54% <100.00%> (+0.10%)	⬆️
udp/client/clientconn.go	71.90% <100.00%> (ø)
tcp/clientobserve.go	66.00% <0.00%> (+1.00%)	⬆️

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