Adaptive Rate-Limited Concurrent Task Queue Processor

Design a TypeScript class that manages a dynamic concurrent task queue with intelligent rate limiting and backpressure handling. The system should automatically adjust concurrency based on system load, support priority queuing, and provide robust error handling with exponential backoff. Implement type-safe generics to allow processing of different task types, and include comprehensive logging and metrics tracking. The solution should be capable of handling up to 10,000 tasks per hour with less than 5% performance degradation.