implementing a safe cache

gistfile1.txt

type Cache struct {
    items map[string]interface{}
    mu sync.Mutex
}

func NewCache() *Cache {
    return &Cache{
        items: make(map[string]interface{}),
    }
}

func (c *Cache) Set(key string, value interface{}) {
    c.mu.Lock()
    defer c.mu.Unlock()
    c.items[key] = value
}

func (c *Cache) Get(key string) (interface{}, bool) {
    c.mu.Lock()
    defer c.mu.Unlock()
    val, ok := c.items[key]
    return val, ok
}