Melange v0.3.0 - Preview

Fully generated SQL functions, removing the need for runtime model tables and delivering significant performance improvements.

Highlights

This release represents a fundamental architectural shift: Melange now generates specialized SQL functions for each relation in your authorization model, eliminating generic runtime functions entirely.

Fully Generated SQL Functions

Instead of storing model data in PostgreSQL tables and using generic functions at runtime, Melange now:

1. Analyzes your schema at migration time to understand each relation’s features
2. Generates specialized check functions tailored to each relation’s specific patterns
3. Creates a dispatcher function that routes permission checks to the appropriate specialized function

This eliminates runtime table lookups and produces SQL optimized for each authorization pattern.

List Function Code Generation

Complete code generation support for list operations across all pattern types, achieving 100% coverage across the OpenFGA test suite:

• Direct assignment and implied relations
• Exclusion patterns
• Userset patterns
• Recursive tuple-to-userset patterns
• Intersection patterns
• Indirect anchor patterns for complex userset chains

Additional Improvements

• No-wildcard variants - Optimized functions for relations that don’t use wildcards
• Migration tracking - Dry-run mode and version tracking
• Removed runtime tables - All logic is now embedded in generated SQL functions