Articles
Zero Trust at the API Edge: Architecting an Identity Facade with Apigee Hybrid & Service Mesh
How Apigee Hybrid implements NIST SP 800-207 Zero Trust Architecture: split-plane PEP/PDP mapping, the Identity Facade pattern, RFC 8628 AI agent security, and East-West service mesh boundaries.
engineering•Oct 31, 2026•17 minBeyond the Castle and Moat: Deconstructing Canonical Zero Trust Architecture
A senior engineer's guide to NIST SP 800-207: the four logical entities, the four planes, and the North-South vs. East-West operational domains.
engineering•Oct 30, 2026•18 minFrom a Single Course to a Methodology: How I "Validated" DDD and CQRS
Why the process of exploration is the real output—from auditing a 65-file Java CQRS tutorial with Toxiproxy chaos tests to building a stage-gated Spec-Driven Development plugin for AI agents.
engineering•Oct 21, 2026•10 minThe Terminal Is No Longer Just a Shell: Inside the Architecture of Herdr and Fresh
Architectural comparison between Herdr (agent multiplexer runtime) and Fresh (zero-config terminal IDE), plus live walkthrough of external agent IPC remote-control.
engineering•Oct 1, 2026•12 minI Let My Coding Agent Build MemPalace on Its Own, but Had to Use Classical Engineering to Get It Really Working
Why unconstrained vibe coding produced a 0.06 recall memory tool, and how classical software engineering—BDD contracts, offline benchmarks, and SQLite—turned it into a rock-solid system.
engineering•Sep 25, 2026•11 minDeploy and Query Gemini Enterprise: A Complete GENAI082 Walkthrough
A complete step-by-step walkthrough of deploying Gemini Enterprise, connecting Google Drive and Google Calendar, and querying enterprise data with grounded AI answers.
tutorials•Aug 21, 2026•10 minGit Worktree Explained: One Repo, Many Working Directories
A practical walkthrough of Git worktrees, from the core idea to real workflows, commands, and AI-agent-friendly use cases.
engineering•Jul 24, 2026•8 minAgentic AI Framework Selection Guide for Full-Stack Engineers
A practical framework selection guide for full-stack engineers based on the most common Agentic AI production use cases in 2026.
engineering•May 17, 2026•8 minWelcome to aca.engineering
An introduction to this multilingual technical newsletter and how it is structured.
meta•May 7, 2026•4 minHello World — Welcome to the Newsletter
An introduction to this technical newsletter and what to expect.
introduction•Jan 15, 2024•3 min