Prevent request stampede

[JasonWildMe]

Prevents request stampede and blocked queueing when Wildbook IA very active and constantly checking WBIA for its queue size.

Key Changes to WbiaQueueUtil.java

1. Cache Stampede Prevention with AtomicBoolean

private static final AtomicBoolean isReloading = new AtomicBoolean(false);

• Uses compareAndSet(false, true) to ensure only ONE thread performs the refresh
• Other threads immediately return with stale (but valid) cached values
• Lock is released in finally block to prevent deadlocks

2. Removed synchronized from all methods

• Original: All methods were synchronized, causing threads to queue and wait
• Now: Uses volatile for thread-safe reads without blocking

3. Made all static fields volatile

• Ensures visibility across threads without synchronization
• Threads always see the latest written values

4. Fixed double-call bug

• Original had a strange pattern calling reloadIfNeeded twice (in try AND finally)
• Now each getter calls it exactly once

5. Atomic value updates

• Uses temporary variables to calculate all values first
• Then assigns them all at once, preventing partially-updated state

[codecov-commenter]

Codecov Report

❌ Patch coverage is 0% with 94 lines in your changes missing coverage. Please review.
✅ Project coverage is 11.54%. Comparing base (505e91f) to head (ef3e3cc).
⚠️ Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
src/main/java/org/ecocean/ia/WbiaQueueUtil.java	0.00%	94 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #1358      +/-   ##
============================================
- Coverage     11.55%   11.54%   -0.01%     
  Complexity     1307     1307              
============================================
  Files           710      710              
  Lines         72933    72953      +20     
  Branches      13954    13957       +3     
============================================
  Hits           8425     8425              
- Misses        63597    63617      +20     
  Partials        911      911              

Flag	Coverage Δ
backend	11.54% <0.00%> (-0.01%)	⬇️
frontend	11.54% <0.00%> (-0.01%)	⬇️

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[naknomum]

going to say it looks good, as much as i can say i can following threading code entirely in my head.