diskcache

Disk Cache Example

This example demonstrates using httpcache with persistent disk storage.

Features Demonstrated

• Creating a disk-based cache
• Persistent storage across application restarts
• Cache directory management
• Multiple clients sharing the same cache

Running the Example

From the project root directory:

go run ./examples/diskcache/main.go

Or from the examples/diskcache directory:

go run main.go

Use Cases

Disk cache is ideal for:

• Desktop applications - Cache API responses between runs
• CLI tools - Speed up repeated commands
• Long-running services - Persist cache across restarts
• Large datasets - When memory cache would be too large

Configuration

cache := diskcache.New("/path/to/cache/dir")
transport := httpcache.NewTransport(cache)

The disk cache uses the diskv library, which provides:

• Efficient key-value storage
• Automatic directory structure
• Built-in compression support (optional)

Important Notes

• Cache directory must be writable
• Files are stored with MD5-hashed filenames
• No automatic cleanup - consider implementing TTL or size limits
• Thread-safe for concurrent access