ledge

Implements full HTTP caching semantics from RFC 7234 and extensions like stale-while-revalidate, ensuring standards-compliant behavior with validation and revalidation.

Uses Redis for storage and metadata, enabling distributed caching with abstracted drivers and configurable setups for high performance.

Processes data in buffers regardless of response size, providing predictable memory usage and low latency, as highlighted in the streaming design section.

Supports Edge Side Includes 1.0 with regex conditions and custom variables, allowing dynamic content assembly at the edge for complex caching patterns.

Offers an events system for binding Lua functions to mid-request events, enabling deep customization of caching logic without modifying core code.