/// <summary>
/// All work is done here
/// </summary>
/// <returns></returns>
internal async Task DoWork()
{
// Demonstrate the cache. We are going to ask the cache if
// a value exists in the cache. If it does, we use it. If not
// we populate the key with the value we want. In real
// life you use a cache to prevent retrieving data from
// a resource that is more time consuming (like a remote service or disk).
// For demo purposes only, we're going to use the in-memory
// collection that we have pre-loaded as the sample data.
// When using the Redis cache you'll notice that the
// first time you run this application, the cache will be populated.
// BUT on every subsequent run of the application, the data ALWAYS
// comes from the cache. Contrast this with the "LocalMemoryCache"
// which is destroyed every time you stop the application. In addition
// the RedisCache data is available EVERYWHERE in the world now. Go to
// another computer and run this application, and it too will pull
// the same data from the RedisCache. This is a persisted/distributed cache.
RegisterClientRequest request = null;
List <string> cacheKeys = new List <string> {
"Tom", "Bob", "Albert"
};
foreach (string key in cacheKeys)
{
request = _applicationCache.GetCachedObject <RegisterClientRequest>(key);
if (request == null)
{
// This simulates reading the data from some location that takes a lot of time
request = (from r in requests where r.ConsultantName.StartsWith(key) select r).FirstOrDefault();
request.TraceInformation($"INITIAL Data was read from some time consuming data store using key {key}");
// Cache the object so the next time we try to read it, it's already in the cache
_applicationCache.CacheObject(request, key);
}
else
{
request.TraceInformation($"INITIAL Data was read from cache using key {key}");
}
}
// Now, we should be able to read ALL values directly from cache
foreach (string key in cacheKeys)
{
request = _applicationCache.GetCachedObject <RegisterClientRequest>(key);
if (request == null)
{
$"SUBSEQUENT Data was read from cache ERROR using key {key}".TraceInformation();
}
else
{
request.TraceInformation($"SUBSEQUENT Data was read from cache using key {key}");
}
}
// Publish a bunch of messages to the message bus.
// Every instance of the "MessageBusClient" app
// running anywhere in the world will receive a copy of the published message
foreach (RegisterClientRequest registerClientRequest in requests)
{
await registerClientRequest.Publish(_messsageBus, "RegisterClientPublisher", "RegisterClientSubscriber");
}
// Write a file to storage and then get it back again
const string localFolder = @"C:\BGRS\Junk\";
await _storage.CopyTo($"{localFolder}junk.txt", "copyJunk.txt");
await _storage.CopyFrom($"{localFolder}copyJunk.txt", "copyJunk.txt");
bool areEquals = System.IO.File.ReadLines($"{localFolder}junk.txt").SequenceEqual(System.IO.File.ReadLines($"{localFolder}copyJunk.txt"));
$"Comparing both files we find that areEquals = {areEquals}".TraceInformation();
File.Delete($"{localFolder}copyJunk.txt");
}
