Djalma Jr's personal blog about software development.https://djalmajr.dev/https://djalmajr.dev/posts/expand-and-contract/https://djalmajr.dev/posts/expand-and-contract/A one-line migration paged me at 11 PM on a Friday — and taught me a pattern that works far beyond databases.Thu, 04 Jun 2026 12:00:00 GMT