import org.opensearch.search.aggregations.bucket.histogram.Histogram;
import org.opensearch.search.aggregations.bucket.terms.Terms;
import org.opensearch.search.aggregations.metrics.Avg;
import org.opensearch.search.aggregations.metrics.Cardinality;

import jakarta.annotation.Resource;

/**
 * Service class for managing search logs and related analytics.
 *

- Adds `apiserver_watch_list_duration_seconds` metrics. Which will measure response latency distribution in seconds for watch list requests broken by group, version, resource and scope ([#120490](https://github.com/kubernetes/kubernetes/pull/120490), [@p0lyn0mial](https://github.com/p0lyn0mial)) [SIG API Machinery and Instrumentation]

    private final NetworkInterfaceInfo remoteInterface;
    private volatile ChannelState state;
    private final long establishedTime;
    private volatile long lastActivityTime;
    
    // Performance metrics
    private final AtomicLong bytesSent;
    private final AtomicLong bytesReceived;
    private final AtomicLong requestsSent;
    private final AtomicLong requestsReceived;
    private final AtomicLong errors;
    

- A new kubelet metric `image_pull_duration_seconds` was added. The metric tracks the duration (in seconds) it takes for an image to be pulled, including the time spent in the waiting queue of image puller. The metric is broken down by bucketed image size. ([#121719](https://github.com/kubernetes/kubernetes/pull/121719), [@ruiwen-zhao](https://github.com/ruiwen-zhao))

		if stats, ok := s.stats[bucket]; ok {
			bucketStats[bucket] = inOutBytes{
				In:  stats.s3InputBytes,
				Out: stats.s3OutputBytes,
			}
		}
	}

	return bucketStats
}

// delete metrics once bucket is deleted.
func (s *bucketConnStats) delete(bucket string) {
	s.Lock()
	defer s.Unlock()

	delete(s.stats, bucket)
}

// HTTPAPIStats holds statistics information about

	testCases := []struct {
		expectErr bool
	}{
		{true},
	}

	for i, testCase := range testCases {
		_, err := storage.DiskInfo(t.Context(), DiskInfoOptions{Metrics: true})
		expectErr := (err != nil)

		if expectErr != testCase.expectErr {
			t.Fatalf("case %v: error: expected: %v, got: %v", i+1, testCase.expectErr, expectErr)
		}
		if err != errUnformattedDisk {

        .build()
    ```

 *  New: Add `cacheHit`, `cacheMiss`, and `cacheConditionalHit()` events to `EventListener`. Use
    these in logs, metrics, and even test cases to confirm your cache headers are configured as
    expected.

 *  New: Constant string `okhttp3.VERSION`. This is a string like "4.5.0-RC1", "4.5.0", or

- **Phases 5-6**: 2-3 months (Low priority)

### Infrastructure
- Windows Server test lab
- RDMA-capable test hardware
- Continuous integration environment
- Performance testing infrastructure

## Success Metrics

1. **Functional Completeness**: All features pass Windows Protocol Test Suite
2. **Performance**: 
   - Multi-channel provides >1.5x throughput improvement
   - RDMA reduces latency by >50%
3. **Reliability**: 

github.com/armon/consul-api v0.0.0-20180202201655-eb2c6b5be1b6/go.mod h1:grANhF5doyWs3UAsr3K4I6qtAmlQcZDesFNEHPZAzj8=
github.com/armon/go-metrics v0.0.0-20190430140413-ec5e00d3c878/go.mod h1:3AMJUQhVx52RsWOnlkpikZr01T/yAVN2gn0861vByNg=
github.com/armon/go-metrics v0.4.1 h1:hR91U9KYmb6bLBYLQjyM+3j+rcd/UhE+G78SFnF8gJA=
github.com/armon/go-metrics v0.4.1/go.mod h1:E6amYzXo6aW1tqzoZGT755KkbgrJsSdpwZ+3JqfkOG4=

│   ├── xml/           # XML processing utilities
│   └── ...            # Additional utility packages
└── src/test/java/      # Comprehensive test suite
```

## 📊 Performance Metrics

CoreLib 0.7.0 includes significant performance improvements through Java 21 optimizations:

- **5-15% faster** type conversions with pattern matching and switch expressions