public IList<Entities.Event> RetrieveExercises(IExerciseRepository repository)
{
//retrieve from cache
IList<Event> exercises = ExerciseClient.RetrieveExercises();
if (exercises == null)
{
//retrieve from database
exercises = repository.RetrieveExercises();
//save to cache
ExerciseClient.SaveExercises(exercises);
}
return exercises;
}