Imports google.golang.org/appengine/delay google.golang.org/appengine google.golang.org/appengine/memcache google.golang.org/appengine/datastore github.com/nu7hatch/gouuid google.golang.org/appengine/urlfetch google.golang.org/appengine/log golang.org/x/net/context Standard library imports encoding/json fmt io io/ioutil net/http net/url strings sync time