2. MarkUs: Framework Maintenance

Keeping up with upstream changes.

PR #7675

The Work

• Updated deprecated Rack status symbols (:payload_too_large → :content_too_large)
• Touched ~40 files with consistent replacements
• Updated changelog properly

What It Taught Me

Safe framework-level modifications — When changing something across the entire codebase, you need a systematic approach:

1. Find all occurrences
2. Understand each usage context
3. Make consistent replacements
4. Test thoroughly

Reviewing large diffs — How to scan many files without getting overwhelmed. Look for patterns, group similar changes, verify consistency.

Backwards compatibility — Following upstream deprecation cycles. When frameworks update, you update. Delaying creates tech debt.

This was a “boring” PR—no new features, just maintenance. But production systems need this kind of care. Someone has to keep the dependencies current.