The Engineering Notebook — 334 posts
Notes on building with AI, agents & the modern stack.
Deep dives on AI/ML, RAG systems, agent engineering, and senior-engineer architecture decisions — a new post every week.
● Latest AI Agent Sandbox Linux VM [2026]: Safe Tool Use, No K8s
If your coding agent can run `git`, `pip`, or a shell, it deserves its own disposable Linux VM. Default-deny egress, snapshot rollback, scoped secrets, and per-run audit bundles. No Kubernetes required.
Recent posts
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Cybersecurity Deepfake Voice Detection: 7-Step Detector Eval Guide [2026]
Deepfake voice detection is easy to demo and hard to operationalize. Here’s a repeatable 7-step methodology to evaluate detectors: datasets, telephony transforms, multilingual edge cases, metrics, thresholds, and deployment playbooks.
Frontend and Mobile Debug HTTP/3 QUIC in Production: 8-Step Playbook [2026]
A Wireshark-free workflow to prove HTTP/3 is actually negotiated, diagnose silent fallback to HTTP/2, and measure real perf impact using DevTools, curl, and logs.
Cloud and DevOps Transparent Huge Pages + Postgres: Stop P99 Latency Cliffs [2026]
THP isn’t “free performance” for Postgres. Here are the exact Linux settings to avoid p99 latency cliffs, plus a validation loop and Kubernetes guardrails.
AI and Machine Learning Data Privacy in RAG Redaction and Retention [2026 Playbook]
A practical engineering playbook for data privacy in RAG: what to redact, where privacy leaks happen, default retention periods, and audit trails you can defend in an audit without wrecking debugging.
AI and Machine Learning AI Engineering Evals: Regression Gates for Prompts, Tools, RAG [2026]
Stop letting prompt tweaks and model upgrades silently break production. Here’s a CI-style regression gate system for prompts, tool calling, and RAG with golden sets, schemas, shadow evals, and failure budgets.
AI and Machine Learning AI Agent Observability Logging Schema [2026]: OTel + Redaction
A copy‑paste JSON logging contract for agent runs (spans, tool I/O, cost, retries) plus a minimal OpenTelemetry mapping you can implement in a weekend—without leaking secrets.
Cybersecurity Deepfake Voice Detection for Call Centers [2026]: Deploy It Right
A practical 2026 runbook for deploying deepfake voice detection in call centers: where to tap RTP audio, what survives VoIP codecs, latency budgets, and how to handle false positives with an appeals workflow.
AI and Machine Learning LLM Latency Benchmark Methodology: Streaming UX Metrics [2026]
A UX-first LLM latency benchmark methodology for streaming chat and agent apps: measure chunk cadence, jitter, tool-call stall time, and end-to-end time-to-usable—not just TTFT.
Developer Tools Reproducible Terminal Dev Environment: direnv + mise [2026]
A repo-first, cross-shell setup for a reproducible terminal dev environment using direnv + mise on macOS, Linux, and WSL—plus secrets patterns and troubleshooting.