$ cat blog/*.md

Notes on backend, serverless, distributed systems and applied AI.

• Jul 7, 2026

  A 0 €/month finance pipeline: S3, Go, and an atomic dedup

  Consolidating broker CSVs with an event-driven Lambda — no scrapers, no bank credentials, no duplicates.

  #aws #go #dynamodb #serverless

• Jul 5, 2026

  Dynamic OG cards in Astro: one per post, built at compile time

  Generating a custom Open Graph image for every blog post with satori and resvg inside an astro:build:done hook — pure-Node, no Cloudflare runtime, no headless browser.

  #astro #satori #cloudflare #seo

• Jul 4, 2026

  My backend buckled at 1000 concurrent exams: FastAPI to Go

  A predictable load spike, a runtime whose concurrency model didn't fit it, and what a rewrite to Go actually bought.

  #go #python #fastapi #concurrency

• Jun 27, 2026

  Give the LLM one decision: turning inconsistent PDFs into structured Excel

  Two production AI agents that read public exam PDFs into Excel — deterministic parsing first, OCR only when forced, and the LLM limited to interpreting structure. No hallucinations in the data.

  #aws #bedrock #textract #serverless

• Jun 20, 2026

  Fitting a sizing engine inside API Gateway's 29 seconds

  How vectorizing the numerical model with NumPy turned a timeout into headroom.

  #aws #lambda #numpy #serverless