ServiceStack caching strategy - caching

Question

I'm learning ServiceStack and have a question about how to use the [Route] tag with caching. Here's my code:
[Route("/applicationusers")]
[Route("/applicationusers/{Id}")]
public class ApplicationUsers : IReturn<ApplicationUserResponse>
{
public int Id { get; set; }
}
public object Get(ApplicationUsers request)
{
//var cacheKey = UrnId.Create<ApplicationUsers>("users");
//return RequestContext.ToOptimizedResultUsingCache(base.Cache, cacheKey, () =>
return new ApplicationUserResponse
{
ApplicationUsers = (request.Id == 0)
? Db.Select<ApplicationUser>()
: Db.Select<ApplicationUser>("Id = {0}", request.Id)
};
}
What I want is for the "ApplicationUsers" collection to be cached, and the times when I pass in an Id, for it to use the main cached collection to get the individual object out.
If I uncomment the code above, the main collection is cached under the "users" key, but any specific query I submit hits the Db again. Am I just thinking about the cache wrong?
Thanks in advance,
Mike

Answer 1

this line
var cacheKey = UrnId.Create<ApplicationUsers>("users");
is creating the same cache key for all the requests, you must use some of the request parameters to make a "unique key" for each different response.
var cacheKey = UrnId.Create<ApplicationUsers>(request.Id.ToString());
this will give you the "urn:ApplicationUsers:0" key for the get all and the "urn:ApplicationUsers:9" for the request with Id = 9
now you can use the extension method in this way.
return RequestContext.ToOptimizedResultUsingCache(Cache, cacheKey, () => {
if(request.Id == 0) return GetAll();
else return GetOne(request.Id);
});
I hope this helps, regards.