public IActionResult Get()
{
var cacheKey = $"image_{DateTime.UtcNow:yyyy_MM_dd}";
var imageBytes = _cache.Get <byte[]>(cacheKey);
if (imageBytes == null)
{
imageBytes = _client.GetFileBytes();
var options = new MemoryCacheEntryOptions();
options.AbsoluteExpirationRelativeToNow = TimeSpan.FromMinutes(2);
_cache.Set <byte[]>(cacheKey, imageBytes, options);
}
return(new FileContentResult(imageBytes, "image/jpeg"));
}
protected override async Task ExecuteAsync(CancellationToken cancellationToken)
{
while (!cancellationToken.IsCancellationRequested)
{
string cacheKey = $"image_{DateTime.UtcNow:yyyy_MM_dd}";
byte[] imageBytes = _cache.Get <byte[]>(cacheKey);
if (imageBytes == null)
{
imageBytes = _client.GetFileBytes();
var options = new MemoryCacheEntryOptions();
options.AbsoluteExpirationRelativeToNow = TimeSpan.FromMinutes(2);
_cache.Set <byte[]>(cacheKey, imageBytes, options);
}
await Task.Delay(TimeSpan.FromMinutes(1));
}
}
