Go Caching

SQLite Cache (Default)

By default, the Go SDK caches flags in a SQLite database at /tmp/flags.db. This persists across application restarts.

// Default SQLite cache
client := flags.NewClient(
    flags.WithAuth(auth),
)

// Custom SQLite path
path := "/var/data/flags.db"
client := flags.NewClient(
    flags.WithAuth(auth),
    flags.SetFileName(&path),
)

Memory Cache

For applications where persistence isn’t needed:

client := flags.NewClient(
    flags.WithAuth(auth),
    flags.WithMemory(),
)

The memory cache uses sync.Map for thread-safe concurrent access.

Cache Refresh

The API response includes a refresh interval. The SDK automatically re-fetches flags at this interval. No manual configuration is needed.

Cache Interface

The Go SDK defines a Cache interface with two implementations:

• cache.SQLiteCache — Persistent storage using SQLite
• cache.MemoryCache — In-memory storage using sync.Map

You can implement the Cache interface to create a custom cache backend.