hakansa 768332820e [client] Implement DNS query caching in DNSForwarder (#4574) ...

implements DNS query caching in the DNSForwarder to improve performance and provide fallback responses when upstream DNS servers fail. The cache stores successful DNS query results and serves them when upstream resolution fails.

- Added a new cache component to store DNS query results by domain and query type
- Integrated cache storage after successful DNS resolutions
- Enhanced error handling to serve cached responses as fallback when upstream DNS fails

2025-10-08 16:54:27 +02:00

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