Zero-Downtime Schema Migrations: Expand, Backfill, Contract, and Verify

A practical two-hour session on Zero-Downtime Schema Migrations, focused on Expand, Backfill, Contract, and Verify. Attendees work through concrete engineering tradeoffs, review examples, and leave with a checklist they can apply in real team projects.

Audience: entry-level and intermediate developers who want a practical engineering session with concrete tradeoffs and examples.

Outcomes:

• Explain the practical boundaries of Zero-Downtime Schema Migrations
• Apply Expand in a small working example
• Apply Backfill in a small working example
• Apply Contract in a small working example

Format: two hours with a short framing walkthrough, a concrete example, discussion of tradeoffs, and a closing checklist for practice.