6 min read
Node.js Monitoring Dashboard: 8 Production Panels
Build a Node.js monitoring dashboard with eight panels that connect request impact, event loop health, memory, and slow traces.
nodejsperformance-monitoringdashboards
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Engineering insights on observability, distributed tracing, and production debugging.
76 posts
5 min
Flask Performance Monitoring in Production
Set up Flask performance monitoring with request metrics and traces. Find slow routes, database calls, and failed exports before users report them.
flaskpython
5 min
Rails N+1 Query Detection: Find and Fix Lazy Loads
Detect Rails N+1 queries with SQL notifications and strict loading. Fix lazy associations with includes, then verify the request trace.
railsdatabase-performance
4 min
Django N+1 Query Detection: Test and Fix ORM Fan-Out
Find Django N+1 queries with query-count tests and request traces. Fix lazy relation loads with select_related or prefetch_related.
djangodatabase-performance
5 min
Node.js Response Time Monitoring by Route
Measure Node.js response time by route, read p95 latency with traces, and separate event loop delays from database and API waits.
nodejsperformance-monitoring
4 min
Sentry Performance Units vs Spans: What Changed?
Learn when Sentry performance units still apply, how legacy transactions were counted, and why current span quotas need a different estimate.
sentrydistributed-tracing
5 min
FastAPI Monitoring with OpenTelemetry in Production
Monitor FastAPI routes with request metrics and OpenTelemetry traces. Check latency, errors, and downstream work before setting alerts.
fastapiopentelemetry
6 min
Elastic APM Transaction Sample Rate: Setup and Checks
Set ELASTIC_APM_TRANSACTION_SAMPLE_RATE, check why it seems ignored, and map the setting to OpenTelemetry sampling during a migration.
elastic-apmtrace-sampling
4 min
DD_TRACE_SAMPLE_RATE in Node.js: A Practical Guide
Set DD_TRACE_SAMPLE_RATE in Node.js, understand rate limits and sampling rules, and verify which distributed traces reach Datadog.
nodejsdistributed-tracing
5 min
FastAPI Tracing with OpenTelemetry: A Practical Setup
Set up FastAPI tracing with OpenTelemetry. Connect request, SQLAlchemy, and HTTPX spans, then verify trace context across services.
fastapiopentelemetry
9 min
How to Track Rogue LLM Calls in Production
Track rogue LLM calls with traces, call counts, token usage, costs, models, and retry evidence before a loop becomes an incident.
llm-observabilitydistributed-tracing
8 min
Trace Based Alerts: Setup and Sampling Pitfalls
Set up trace based alerts for errors and latency. Check sampling, request counts, time windows, and notification context before paging.
alertingdistributed-tracing