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#observability

Gaining deep insights into system behavior through metrics, logs, and traces.

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Tracing AI Agent Workflows with AWS X‑Ray: A Step‑By‑Step Guide for Node.js

Tracing AI Agent Workflows with AWS X‑Ray: A Step‑By‑Step Guide for Node.js

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8 min read
CloudWatch EMF Explained Simply: How to Emit Zero‑Overhead Custom Metrics from Your AI Node.js Service

CloudWatch EMF Explained Simply: How to Emit Zero‑Overhead Custom Metrics from Your AI Node.js Service

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8 min read
How to Build Node.js Failure Metrics Dashboards and Email Alerts for SaaS

How to Build Node.js Failure Metrics Dashboards and Email Alerts for SaaS

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6 min read
Observability in the Next.js App Router: Field Notes on instrumentation.ts, onRequestError, and the Trace That Leaked Across Requests

Observability in the Next.js App Router: Field Notes on instrumentation.ts, onRequestError, and the Trace That Leaked Across Requests

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6 min read
Your success message is not keyed on the thing that would make it false

Your success message is not keyed on the thing that would make it false

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8 min read
Why our on-prem log analytics appliance doesn't ship with an LLM

Why our on-prem log analytics appliance doesn't ship with an LLM

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5 min read
Tes journaux sont une scène de crime

Tes journaux sont une scène de crime

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2 min read
I Built a Small API Gateway With Real Production Problems — On Purpose

I Built a Small API Gateway With Real Production Problems — On Purpose

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11 min read
"Log this once" is a tense change, not a rate limit

"Log this once" is a tense change, not a rate limit

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10 min read
Structured Logging in Next.js with Pino (Request IDs to stdout)

Structured Logging in Next.js with Pino (Request IDs to stdout)

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9 min read
Production RAG Architecture: LLMOps Patterns & Checklist

Production RAG Architecture: LLMOps Patterns & Checklist

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4 min read
Simple Hosted Metrics Dashboard API Explained (for Small Node.js SaaS with Postgres)

Simple Hosted Metrics Dashboard API Explained (for Small Node.js SaaS with Postgres)

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7 min read
I Blamed the Rate Limit for 48 Hours. The Retry Storm Was Coming From Inside My Code.

I Blamed the Rate Limit for 48 Hours. The Retry Storm Was Coming From Inside My Code.

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5 min read
Structured API Logging in 2026: Correlating Response Status and Delivery Latency

Structured API Logging in 2026: Correlating Response Status and Delivery Latency

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7 min read
The healthy run is the one nobody instrumented

The healthy run is the one nobody instrumented

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3 min read
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