Metrics & Monitoring
Key, metrics — LATENCY, (response, time), TRAFFIC, (requests, per, second), ERRORS, (error, rate), aur, SATURATION, (resource, usage, jaise, CPU/memory) — INHE, MILAKE, "THE, FOUR, GOLDEN, SIGNALS" kehte, HAIN.
Prometheus, (metrics, COLLECT, aur, STORE, karta hai) aur, Grafana, (VISUALIZATION, dashboards) MICROSERVICES, monitoring, ka, EK, POPULAR, COMBINATION, hai — ALERTS, bhi, SET, kiye, ja, sakte, HAIN, jab, metrics, EK, THRESHOLD, CROSS, karte, hain.
// Prometheus metric example:
http_requests_total{service="order-service", status="500"} 42
// Alert rule:
// IF, error_rate > 5%, FOR, 5, minutes → notify, on-call, team- Four Golden Signals: Latency, Traffic, Errors, Saturation
- Prometheus (collection) + Grafana (visualization) = popular, combo
- Alerts, se, thresholds, cross, hone, PAR, team, ko, notify, kiya, ja, sakta, hai
RED, method, (Rate, Errors, Duration) SERVICES, ke, liye, hai — request-focused, monitoring. USE, method, (Utilization, Saturation, Errors) RESOURCES, (CPU, memory) ke, liye, hai — resource-focused, monitoring — DONO, COMPLEMENTARY, HAIN.
// RED metrics, EK, service, ke, liye:
request_rate, error_rate, request_durationBAHUT, saare, alerts, (ESPECIALLY, LOW-SEVERITY, ones) TEAM, ko, "alert, fatigue" ki, taraf, LE, ja, sakte, hain — jaha, IMPORTANT, alerts, ko, IGNORE, kiya, jaane, lagta, hai. Alerts, ko, ACTIONABLE, aur, HIGH-CONFIDENCE, rakhna, IMPORTANT, hai.