async Task ICachedTrainingService.RefreshTrainig(int trainingId)
{
var cache_key = ListTrainings_CacheKey;
await _cache.RemoveAsync(cache_key);
}
async Task ICachedSecurityService.RefreshSecurityRoles()
{
var cache_key = ListAllRoles_CacheKey;
await _cache.RemoveAsync(cache_key);
}