feat(dht): enhance performance and reliability with caching and adapt…

[pranavkonde]

Description

Improves DHT performance and reliability with caching, adaptive timeouts, and better resource management.

Changes

• Add record caching (LRU, 1000 entries, 5min TTL)
• Implement adaptive timeouts based on peer response times
• Add a peer scoring system for better peer selection
• Add batched cleanup for stale provider records
• Add comprehensive metrics for monitoring

New Metrics

• Query timing and error metrics
• Provider operation metrics
• Cleanup performance metrics
• Cache hit/miss rates

Performance Impact

• Reduced query latency through caching
• Better query success rates with adaptive timeouts
• Improved resource utilization
• Faster peer selection

Testing

• Verified cache behavior and expiration
• Tested adaptive timeout functionality
• Confirmed peer scoring system
• Checked metrics accuracy

[achingbrain]

Thank you for opening this PR.

Is this in response to an issue you’ve seen in a deployed application or are you just trying to make general improvements to the codebase?