Module cache 

HTTP caching infrastructure for Grapsus

This module provides the foundation for HTTP response caching using Pingora’s cache infrastructure.

Current features:

• Cache configuration per route
• Cache statistics tracking
• Cache key generation
• TTL calculation from Cache-Control headers
• In-memory cache storage backend (for development/testing)

Storage Backends

The default storage is an in-memory cache suitable for development and single-instance deployments. For production with large cache sizes or persistence needs, consider implementing a disk-based storage backend.

Structs

CacheConfig

Cache configuration for a route

CacheManager

Cache manager for HTTP responses

HttpCacheStats

HTTP cache statistics

Functions

compile_glob_to_regex

Convert a glob-style pattern to a regex pattern.

configure_cache

Configure the global cache storage settings.

get_cache_eviction

Get a static reference to the cache eviction manager

get_cache_lock

Get a static reference to the cache lock

get_cache_storage

Get a static reference to the HTTP cache storage

init_disk_cache_state

Initialize disk cache eviction state at startup.

is_cache_enabled

Check if caching is globally enabled

save_disk_cache_state

Save disk cache eviction state for faster recovery on next startup.