Correlation Between Traces and Metrics

Introduction

In the realm of observability, understanding the correlation between traces and metrics is crucial for diagnosing issues and enhancing system performance. This lesson will explore these concepts in detail.

Key Concepts

Trace and Metrics Relation

Correlation between traces and metrics allows for deeper insights into system behavior. Here’s how they relate:

1. Traces provide context for metrics, allowing you to identify which requests are causing performance degradation.
2. Metrics can guide the investigation of traces by highlighting anomalies that need further examination.
3. Combined, they enable root cause analysis of issues by correlating response times and error rates with specific requests.

Example Code: Instrumenting Traces and Metrics

const { trace, metrics } = require('observability-library');

function processRequest(req) {
    const span = trace.startSpan('processRequest');
    metrics.record('requests.total', 1);

    // Simulate processing
    setTimeout(() => {
        metrics.record('requests.success', 1);
        span.end();
    }, 1000);
}
                

Best Practices

FAQ