package cache import "github.com/puzpuzpuz/xsync/v3" type Cache struct { provider *xsync.MapOf[string, bool] } func New() *Cache { return &Cache{ provider: xsync.NewMapOf[string, bool](), } } func (c *Cache) Set(key string) { c.provider.Store(key, true) } func (c *Cache) Get(key string) bool { v, _ := c.provider.Load(key) return v } func (c *Cache) Size() int { return c.provider.Size() }