Method GetOrSet

cache.go:150–161

GetOrSet returns existing value or if record doesn't exist it sets a new key, value and expiration for a cache entry and stores it in the cache, returns nil in that case

(key, value []byte, expireSeconds int)

// GetOrSet returns existing value or if record doesn't exist
// it sets a new key, value and expiration for a cache entry and stores it in the cache, returns nil in that case
func (cache *Cache) GetOrSet(key, value []byte, expireSeconds int) (retValue []byte, err error) {
	hashVal := hashFunc(key)
	segID := hashVal & segmentAndOpVal
	cache.locks[segID].Lock()
	defer cache.locks[segID].Unlock()

	retValue, _, err = cache.segments[segID].get(key, nil, hashVal, false)
	if err != nil {
		err = cache.segments[segID].set(key, value, hashVal, expireSeconds)
	}
	return
}

// SetAndGet sets a key, value and expiration for a cache entry and stores it in the cache.
// If the key is larger than 65535 or value is larger than 1/1024 of the cache size,