The newest deploy is almost never the cause. So I gave on-call a graph.
The newest deploy is almost never the cause. So I gave on-call a graph. (On-call Brain, Graph Hacks by WeMakeDevs x FalkorDB) It's 3 am. Your phone…
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A guard that never fires is the same as a guard that does not work
Every guard has two states: working and green by accident. Both print “OK”. The difference only shows when you force the condition it was supposed t…
APIWatch: Checking API Traffic and Subscription Controls with WSO2 API Manager
I recently worked on a project called APIWatch using Python and WSO2 API Manager. It is a small monitoring tool that reads API traffic logs and help…
A 200 response and a broken page: what screenshot monitoring taught me
An uptime check answers one question: did the server respond? Visitors ask a different one: can I use this page? After a few years of looking after…
Error Tracking and Uptime Monitoring Expose Different Cron Heartbeat Evidence
Error tracking and uptime monitoring cannot prove that a media cron job sent its completion heartbeat. An AI agent that never starts produces no exc…
Daily Dose of DevOps — SLI definition: without alert fatigue
SLI definition: without alert fatigue A platform capability becomes dangerous when ownership is implicit but authority is broad. For sli definition…
Using Change and Novelty Filters for Continuous Monitoring
Using Change and Novelty Filters for Continuous Monitoring The timeline gap in this incident is its most instructive detail. Solar detected the intr…
Your Dashboard Says "Live" — Prove It With Freshness Watermarks
I once shipped a monitoring page that said LIVE in confident green letters. It stayed green for eleven days while the ingest job behind it had been…
Daily Dose of DevOps — Kubernetes observability: for regulated workloads
Kubernetes observability: for regulated workloads Scale converts an informal convention into an outage mechanism. For kubernetes observability for r…
n8n: Get Alerted When an Automation Fails, Before a Client Notices
A silent failure costs more than an error. Say your n8n workflow pulls prices from a sheet every morning, and one run fails on a Monday. Nobody gets…
Marketplace Health Endpoint Monitoring — 2 Small SaaS Observability Stack Boundaries
TL;DR: A small marketplace needs two evidence paths: internal telemetry that explains a failed scheduled job, and an external check that notices pub…
RAG Evaluation & Monitoring: Metrics, Frameworks & Production Observability
RAG Evaluation & Monitoring: Metrics, Frameworks & Production Observability Comprehensive guide to evaluating and monitoring Retrieval-Augme…
Node.js Monitoring for 3 Cron Job Silent Failure Signals
A cohort experiment cannot be rolled back safely if its scheduled evaluator can disappear without evidence. App logs alone are insufficient because…
Freshness-Aware Retrieval Architecture for News Monitoring Metadata Filters in Production
Short answer: use a staged retrieval design with explicit collections, bounded queries, and traceable source context. For a news monitoring service,…
How I monitor my entire home network for free - no port forwarding, no VPN
After a power outage took out half my containers and I didn't notice for hours, I decided I needed proper uptime monitoring. Here's how I got it for…
Who monitors your Uptime Kuma? Three ways to watch the watcher
Uptime Kuma is the default self-hosted monitor for good reason: 20-second checks, 90+ notification services and status pages, all in one container.…
Detection Engineering Starts With the Logs You Decided to Keep
Detection Engineering Starts With the Logs You Decided to Keep Detection content is written against telemetry. If the telemetry does not exist, the…
Healthcare AI Needs to Account for Practice Drift
Machine learning systems are usually evaluated against a relatively stable development environment. Healthcare rarely provides one. Clinical practic…
Google says on-call needs eight engineers. You have three.
TL;DR. Google's SRE book works out that a 24/7 on-call rotation needs at least eight engineers. A team of two or three cannot reach that number, so…
Better Uptime Monitoring for Small SaaS API and Cron Healthchecks
Short answer: monitor the public API and the scheduled import as two different promises. Use an external request check for reachability, and emit a…
How Accurate Is Your Model Right Now? Estimating Accuracy Without Labels
Label-free accuracy estimation under data shift — and the monitoring sidecar that uses it. Scope note: two intent-classification datasets (Banking77…
От бизнес-метрики до дежурного: как построить алертинг, от которого не страдают
Эта статья - о шаге, который предшествует настройке маршрутов: как выбрать сигнал, связать его с влиянием на бизнес, определить срочность и проверит…
SaaS App Health Monitoring: Forensic Evidence for Silent Node Cron Jobs
Make every Node.js SaaS app import emit durable completion evidence, then make uptime monitoring alert on its absence only after the expected delive…
How to Build Startup Uptime Monitoring: 4 Postgres Healthcheck API Signals
Build the startup uptime monitoring API around four separate signals: an external probe, an internal healthcheck endpoint, a cron deadline, and a du…
Small SaaS Node Uptime Monitoring 2026: Cost Attribution for Health Endpoints
TL;DR: For a small fintech SaaS, start with one external probe in each customer region, one dead-man signal per scheduled job, and narrowly scoped a…
Production Health Check Endpoints: Readiness and Logs Beat External Polling Alone
An Express production health check endpoint cannot tell me that a scheduled media import produced zero articles, even when its readiness response is…
Application Uptime Monitoring: Health Endpoint Checks, Cron Job Heartbeats, and Metrics
TL;DR: Expose a cheap /health endpoint for process readiness, poll it from outside the service, and report outcome and latency metrics on a schedule…
Sentinel: The Watchdog and Derived Points
A door sensor that only reports when the door opens or closes can go months without sending anything. If nothing has happened, that silence is corre…
Backend Uptime Alerts from One-Minute Metrics API Polling and Failure Evidence
A one-minute poller is only useful if it preserves enough evidence to explain an outage after the alert fires. For a gaming backend, the practical c…
Graylog on the Internet: 14,061 Matches on a Platform That Centralises Every Log
Graylog on the Internet: 14,061 Matches on a Platform That Centralises Every Log Log aggregation platforms exist to collect data from every other sy…