public async Task <IEnumerable <HatResource> > GetHatsAsync()
{
// Note: In the real world, we'd use a caching interface that supports GetOrAddAsync<T> for atomicity
const string region = nameof(CachingHatService) + "|" + nameof(GetHatsAsync);
var key = region;
var cached = await _cache.GetStringAsync(key);
IEnumerable <HatResource> result;
if (cached != null)
{
_logger.LogInformation("Cached hats found");
result = JsonConvert.DeserializeObject <List <HatResource> >(cached);
}
else
{
_logger.LogInformation("Cached hats not found, retrieving from data store");
result = await _dataLayer.GetHatsAsync();
await _cache.SetStringAsync(key, JsonConvert.SerializeObject(result));
}
return(result.Select(_mapper.Map <HatResource>));
}
public async Task <IEnumerable <HatResource> > Get([FromServices] IHatService service)
{
_logger.LogInformation("Getting all hats");
return(await service.GetHatsAsync());
}
