fsh905 / simple_cache

cache

• cache sth in memory
• a get operation will be refresh the expire time if key not expired.
• only support little count k-v

refer: https://github.com/patrickmn/go-cache

usage

# demo 1
cache := NewCache(interval)
cache.Set(key, value, 1 * time.Second)

v, ok := cache.get(key)
if ok {
    val := v.(string)
    fmt.Print(val)
}

# demo 2
cache := NewCache(interval)
cache.Set(key, value, 3 * time.Second)

time.Sleep(2 * time.Second)
// refresh
v, ok := cache.get(key)
if ok {
    val := v.(string)
    fmt.Print(val)
}

time.Sleep(2 * time.Second)
// also can get value
v, ok = cache.get(key)
if ok {
    val := v.(string)
    fmt.Print(val)
}