"sync/atomic"
	"time"
)

// Opts contains options for the cache.
type Opts struct {
	// When set to true, return the last cached value
	// even if updating the value errors out.
	// Returns the last good value AND the error.
	ReturnLastGood bool

	// If CacheError is set, errors will be cached as well
	// and not continuously try to update.
	// Should not be combined with ReturnLastGood.
	CacheError bool

	// store and retrieve pre-condition check entities such as
	// Etag and ModTime of an object + version
	Endpoint string `json:"endpoint"`

	// BlockSize indicates the maximum object size below which
	// data is cached and fetched remotely from DRAM.
	BlockSize int64

	// Is the HTTP client used for communicating with mcache server
	clnt *http.Client
}

var configLock sync.RWMutex