New AE Memcache middleware creates & returns.

WithCacheKey creates a ClientOption that specifies how to generate a cache key from datastore.Key.

WithExcludeKinds creates a ClientOption that selects the Kind unspecified as the cache target.

WithExpireDuration creates a ClientOption to expire at a specified time.

WithIncludeKinds creates a ClientOption that selects the Kind specified as the cache target.

WithKeyFilter creates a ClientOption that selects the Keys specified as the cache target.

WithLogger creates a ClientOption that uses the specified logger.

A CacheOption is an cache option for a AE Memcache middleware.