StartupHystrix.cs

public void ConfigureServices(IServiceCollection services)
{
    services.AddMvc();
    services.AddHystrix();
    services.Configure<HystrixOptions>(options => Configuration.GetSection("Hystrix").Bind(options));
}

// This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
public void Configure(IApplicationBuilder app, IHostingEnvironment env)
{
    if (env.IsDevelopment())
    {
        app.UseDeveloperExceptionPage();
    }

    app.UseMvc();
    app.UseHystrixMetricsEndpoint("hystrix.stream");
}