Hi, it’s gregmolnar. Let’s explore this week’s changes in the Rails codebase.

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Rails

Weekly roundup of Rails codebase changes including: batching SQL statements during schema loading for performance, deprecation of require_dependency (to be removed in Rails 9), new MySQL lock and algorithm options for DDL operations enabling online schema changes, Dockerfile build optimizations for new Rails apps, PostgreSQL RESET support on readonly queries, and Action Text improvements allowing block children alongside value in editor elements.

This Week in Rails: March 20, 2026