Tweaking WCF to build highly scalable async REST API

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Diagnostics;

namespace WcfAsyncRestApi
{
    /// <summary>
    /// Summary description for Flush
    /// </summary>
    public class Flush : IHttpHandler
    {

        public void ProcessRequest(HttpContext context)
        {
            Trace.Flush();
            context.Response.ContentType = "text/plain";
            context.Response.Write("Hello World");            
        }

        public bool IsReusable
        {
            get
            {
                return false;
            }
        }
    }
}