cache

var (
	// ErrCacheMiss is returned when the key isn't in the cache
	ErrCacheMiss = errors.New("cache miss")
	// ErrInvalidDstVal is returned with the dstVal of the Get() func cannot be set. It's probably because the
	// dstVal is not a pointer.
	ErrInvalidDstVal = errors.New("cannot set dst value")
	// ErrInvalidDataFormat is returned when the data retrieved from a storage engine is not in the expected format
	ErrInvalidDataFormat = errors.New("Invalid data format")
	// ErrKeyExists indicates that the item you are trying to store with
	// a "cas" command has been modified since you last fetched it.
	ErrKeyExists = errors.New("key already exists")
	// ErrNotStored indicate the data was not stored, but not
	// because of an error. This normally means that the
	// condition for an "add" or a "replace" command wasn't met.
	ErrNotStored = errors.New("not stored")
	// ErrNotFound indicates that the item you are trying to store
	// with a "cas" command did not exist.
	ErrNotFound = errors.New("not found")
	// ErrUnsupportedAction indicates that the selected driver doesn't support the given action
	ErrUnsupportedAction = errors.New("not supported")
	// ErrCannotSetValue is returned when an previously set cache value pointer cannot be set.
	ErrCannotSetValue = errors.New("cannot set value of interface")
	// ErrCannotAssignValue is returned when a previously set cache value pointer cannot be
	// updated because the new value's type cannot be assigned to the previous value's type.
	ErrCannotAssignValue = errors.New("cannot assign value")
	// ErrCASConflict means that a CompareAndSwap call failed due to the
	// cached value being modified between the Get and the CompareAndSwap.
	// If the cached value was simply evicted rather than replaced,
	// ErrNotStored will be returned instead.
	ErrCASConflict = errors.New("compare-and-swap conflict")
	// NeverExpires is the duration which should be set for a key to never expire because of duration
	NeverExpires = time.Duration(0)
)