protected override async Task <TResponse> Process(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate <TResponse> next)
{
// cache only if implements interface
var cacheRequest = request as ICacheQueryResult;
if (cacheRequest == null || !cacheRequest.IsCacheable())
{
return(await next().ConfigureAwait(false));
}
var cacheKey = cacheRequest.GetCacheKey();
// check cache
var cachedBuffer = await _distributedCache
.GetAsync(cacheKey, cancellationToken)
.ConfigureAwait(false);
if (cachedBuffer != null)
{
var cachedItem = await _distributedCacheSerializer
.FromByteArrayAsync <TResponse>(cachedBuffer)
.ConfigureAwait(false);
Logger.LogTrace("Cache Hit; Key: '{cacheKey}'.", cacheKey);
return(cachedItem);
}
Logger.LogTrace("Cache Miss; Key: '{cacheKey}'.", cacheKey);
// continue if not found in cache
var result = await next().ConfigureAwait(false);
if (result == null)
{
return(default(TResponse));
}
// save to cache
var itemBuffer = await _distributedCacheSerializer
.ToByteArrayAsync(result)
.ConfigureAwait(false);
var options = new DistributedCacheEntryOptions
{
SlidingExpiration = cacheRequest.SlidingExpiration(),
AbsoluteExpiration = cacheRequest.AbsoluteExpiration()
};
await _distributedCache
.SetAsync(cacheKey, itemBuffer, options, cancellationToken)
.ConfigureAwait(false);
Logger.LogTrace("Cache Insert; Key: '{cacheKey}'.", cacheKey);
return(result);
}
protected override async Task <TResponse> Process(TRequest request, CancellationToken cancellationToken, RequestHandlerDelegate <TResponse> next)
{
if (next is null)
{
throw new ArgumentNullException(nameof(next));
}
if (next is null)
{
throw new ArgumentNullException(nameof(next));
}
// cache only if implements interface
var cacheRequest = request as ICacheQueryResult;
if (cacheRequest?.IsCacheable() != true)
{
return(await next().ConfigureAwait(false));
}
var cacheKey = cacheRequest.GetCacheKey();
// check cache
var cachedBuffer = await _distributedCache
.GetAsync(cacheKey, cancellationToken)
.ConfigureAwait(false);
if (cachedBuffer != null)
{
var cachedItem = await _distributedCacheSerializer
.FromByteArrayAsync <TResponse>(cachedBuffer)
.ConfigureAwait(false);
LogCacheAction(Logger, "Hit", cacheKey);
return(cachedItem);
}
LogCacheAction(Logger, "Miss", cacheKey);
// continue if not found in cache
var result = await next().ConfigureAwait(false);
if (result == null)
{
return(result);
}
// save to cache
var itemBuffer = await _distributedCacheSerializer
.ToByteArrayAsync(result)
.ConfigureAwait(false);
var options = new DistributedCacheEntryOptions
{
SlidingExpiration = cacheRequest.SlidingExpiration(),
AbsoluteExpiration = cacheRequest.AbsoluteExpiration()
};
await _distributedCache
.SetAsync(cacheKey, itemBuffer, options, cancellationToken)
.ConfigureAwait(false);
LogCacheAction(Logger, "Insert", cacheKey);
return(result);
}
