Monitoring and Observability: Production Application Insights
July 28, 2024•1 min read
MonitoringObservabilityPrometheusDevOps
# Monitoring and Observability: Production Application Insights
Effective monitoring provides visibility into application health, performance, and issues. This guide covers monitoring strategies.
## Metrics Collection
### Prometheus
```typescript
import { Counter, Histogram } from 'prom-client';
const httpRequestDuration = new Histogram({
name: 'http_request_duration_seconds',
help: 'Duration of HTTP requests in seconds',
});
app.use((req, res, next) => {
const end = httpRequestDuration.startTimer();
res.on('finish', () => {
end({ method: req.method, route: req.route?.path });
});
next();
});
```
## Logging
```typescript
import pino from 'pino';
const logger = pino({
level: 'info',
transport: {
target: 'pino-pretty',
},
});
logger.info({ userId: '123', action: 'login' }, 'User logged in');
```
## Distributed Tracing
```typescript
import { trace } from '@opentelemetry/api';
const tracer = trace.getTracer('my-app');
tracer.startActiveSpan('operation', (span) => {
// Your code
span.end();
});
```
## Alerting
- Set up alerts for errors
- Monitor performance metrics
- Track business metrics
- Implement on-call rotations
## Conclusion
Comprehensive monitoring enables proactive issue detection and resolution. Invest in observability tools for production applications.