IP Address Validation and Key Expiration Optimization

[stav-bentov]

IP Address Validation in Node Address Update:

• Ensures that the node address is updated only when a valid IP address is obtained.
• This prevents erroneous updates with invalid or placeholder values (e.g., an empty string or "?").

Optimize Key Expiration Check with Branch Prediction Hint:

• Introduces a condition to leverage branch prediction for improved performance.
• The added check reduces unnecessary evaluations when the database size (dbSize(db)) is 0.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 71.03%. Comparing base (9071a5c) to head (4841885).
Report is 1 commits behind head on unstable.

Additional details and impacted files

@@             Coverage Diff              @@
##           unstable    #1622      +/-   ##
============================================
+ Coverage     70.85%   71.03%   +0.17%     
============================================
  Files           121      121              
  Lines         65169    65171       +2     
============================================
+ Hits          46176    46291     +115     
+ Misses        18993    18880     -113     

Files with missing lines	Coverage Δ
src/cluster_legacy.c	87.39% <100.00%> (+0.18%)	⬆️
src/db.c	89.73% <100.00%> (+0.16%)	⬆️

... and 8 files with indirect coverage changes