$ ls ./writing --tag security

• AWS Day 4: Spinning Up an RDS Instance and Connecting It to My App Jul 15, 2026

  I wire a managed Postgres instance to the FastAPI app from Day 2, get the security group mental model backwards at first, create the whole thing in the wrong AWS region, and break sudo with a virtualenv path mismatch before any of it actually works.

• Learning AWS Day 3: S3 Static Hosting Jul 9, 2026

  I host a static site on S3 with zero servers running, get tripped up by a 403 that actually has two separate causes, and learn why presigned URLs are how real apps hand out temporary access to private files.