Journal
Tested guides by Waseem Anjum on AI automation, AI agents, MCP servers, NestJS, Next.js, TypeScript and self-hosting, with real code and measured results.
AI Engineering
How Benchline runs 61 browser tools where each one is a pure function shared by a web page, a stateless Streamable HTTP MCP server and a JSON API, using real code from the repo.
DevOps & Self-Hosting
I installed Coolify 4.4.6 and Dokploy 0.30.8 on identical fresh Ubuntu VMs. Coolify idled at ~520 MiB and 3 GB of disk, Dokploy at ~831 MiB and 5 GB. Here's what each installs, plus security and which to pick.
AI Engineering
I upgraded a real AI SDK 6 app to AI SDK 7. The codemod fixed 15 lines in 20 seconds but only 1 of 9 broken tests. Here's every step, the behaviour changes TypeScript misses, and the OpenTelemetry trap.
Next.js & React
TanStack Start 1.0 is stable, so I built the same store in Start and Next.js 16.4 and benchmarked both. Start served 2.9× to 8.6× more dynamic requests, shipped 20% less JS and built 3.9× faster. Next.js won on static pages.
Developer Tools
I ran ESLint 9 and 10, Oxlint 1.88 and Biome 2.5 on this site's real Next.js code. Oxlint was 81× faster than ESLint with the same rules and matched all 80 typescript-eslint findings 16× faster. Here's what each migration keeps and breaks.
Backend & APIs
I benchmarked Hono, Express 5, Fastify 5 and NestJS 12 across JSON, route parameters and POST bodies on Node 24, Node 26 and Bun. Hono and Fastify tie on Node at about 1.4× Express; on Bun, Hono hits 118k requests per second.
AI Engineering
Both official MCP SDKs had a high-severity OAuth flaw (CVE-2026-104850). I reproduced it locally, found that upgrading alone doesn't fix bundled providers, and show how a production MCP server handles OAuth, per-tool scopes and audit logging.
Backend & APIs
I upgraded a real NestJS 11 API to NestJS 12.1.3 with nest upgrade, fixed what broke (TypeScript 6, Jest and ESM, @Optional), and benchmarked v11 vs v12, Zod vs class-validator, Jest vs Vitest, ESLint vs oxlint, TypeScript 7 and Bun.
Backend & APIs
I ran the same Hono, Express and Postgres apps on Bun 1.4.3, Node.js 24 and Node.js 26, then measured throughput, memory, startup, TypeScript, installs, next build and native addons. Here is when Bun is worth switching to, and when Node 26 is enough.
