func NewLogCache(capacity int, store LogStore) (*LogCache, error) {
	if capacity <= 0 {
		return nil, fmt.Errorf("capacity must be positive")
	}
	c := &LogCache{
		store: store,
		cache: make([]*Log, capacity),
	}
	return c, nil
}
func NewLogCache(capacity int, store LogStore) (*LogCache, error) {
	if capacity <= 0 {
		return nil, fmt.Errorf("capacity must be positive")
	}
	c := &LogCache{
		store: store,
		cache: make([]*Log, capacity),
	}
	return c, nil
}
func NewLogCache ( capacity int , store LogStore ) ( * LogCache , error ) { if capacity <= 0 { return nil , fmt . Errorf ( " " ) } c := & LogCache { store : store , cache : make ( [ ] * Log , capacity ) , } return c , nil }
// NewLogCache is used to create a new LogCache with the
// given capacity and backend store.
NewLogCache is used to create a new LogCache with the given capacity and backend store .