TEST-015: Concurrency Safety Tests Beyond Race Detector

[ajitpratap0]

Summary

Add explicit concurrency tests with 10,000+ goroutines to validate thread safety and pool behavior under extreme concurrent load.

Problem

Race detector passes, but need explicit concurrency tests to validate production concurrent usage patterns and pool exhaustion scenarios.

Action Items

1. Test concurrent access patterns:
   • 1000 goroutines parsing simultaneously
   • 10,000 goroutines for stress testing
   • Shared tokenizer pool under heavy load
   • Parser object reuse patterns
   • Metrics concurrent updates
2. Test pool exhaustion scenarios
3. Benchmark concurrent performance (scaling to 128+ cores)
4. Test sustained concurrent load (1M+ operations)

Acceptance Criteria

• 10K goroutine test passes
• Linear scaling to 128 cores verified
• Pool performance under contention measured
• No deadlocks or resource starvation
• Sustained performance maintained

Technical Details

Priority: Medium
Effort: Medium (16h)
Phase: Phase 2 - Testing & Coverage
Dependencies: None

Related

Validates production claim: "ZERO race conditions (20,000+ concurrent operations tested)"