Field-tested guides on uptime monitoring, API health checks, status codes, JSON assertions, SLAs and on-call alerting. Written by engineers who got paged at 3am so you don't have to.
SSL certificate monitoring catches expiry before it breaks production. Learn why certs still expire despite auto-renewal and how to alert weeks ahead.
Response time monitoring catches the slow degradations a simple up/down check misses. Learn to track latency, percentiles, and TTFB before users feel the pain.
Website down alerts that reach you in seconds via email and Telegram. Learn what a good downtime notification contains and how to get notified before customers do.
SLA SLO SLI uptime, demystified for engineers. Learn how availability nines map to real downtime, how error budgets work, and how to measure it correctly.
Alert fatigue trains engineers to ignore the one page that matters. Learn the root causes and the concrete fixes that make on-call alerts trustworthy again.
Your monitor check interval is a trade-off between fast detection and noise. Here's how to pick the right frequency for marketing sites, APIs, and crons.
Learn how JSON path assertions catch broken APIs that return 200 OK with wrong data. Validate response bodies, fields, and arrays with confidence.
A practical guide to HTTP status codes monitoring: how to tell 4xx vs 5xx apart, which codes mean you're really down, and how a monitor should react.
Nine battle-tested API monitoring best practices — assert on the body, monitor latency percentiles, watch dependencies, and stop trusting a bare 200 OK.
Uptime monitoring explained in plain English: how it works, why a 200 OK isn't enough, what to measure, and how to set it up in minutes.