Simple request logging in Asp.Net Core, suitable for showing in the console while developing

SimpleLogger.cs

using System;
using System.Diagnostics;
using Microsoft.Extensions.Logging;

namespace Microsoft.AspNetCore.Builder
{
    public static class SimpleLogger
    {
        const string LOG_NAME = "MyProject.SimpleLogger";
        const string LOG_FORMAT = "{0} | {1}ms | {2} | {3} {4}";
        const string TIMESTAMP_FORMAT = "yyyy-MM-dd HH:mm:ss:fff";

        public static IApplicationBuilder UseSimpleLogger(this IApplicationBuilder app, ILoggerFactory loggerFactory)
        {
            var logger = loggerFactory.CreateLogger(LOG_NAME);

            app.Use(async (context, next) =>
            {
                var stopwatch = Stopwatch.StartNew();

                await next();

                stopwatch.Stop();

                var timestamp = DateTimeOffset.Now.ToString(TIMESTAMP_FORMAT);
                var elapsed = stopwatch.ElapsedMilliseconds.ToString().PadLeft(5);
                var status = context.Response.StatusCode;
                var method = context.Request.Method;
                var path = context.Request.Path + context.Request.QueryString;

                if (status < 400)
                    logger.LogInformation(LOG_FORMAT, timestamp, elapsed, status, method, path);
                else if (status < 500)
                    logger.LogWarning(LOG_FORMAT, timestamp, elapsed, status, method, path);
                else
                    logger.LogError(LOG_FORMAT, timestamp, elapsed, status, method, path);
            });

            return app;
        }
    }
}

Startup.cs

namespace MyProject
{
    public class Startup
    {
        public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
        {
            loggerFactory.AddConsole();
            
            if (env.IsDevelopment())
                app.UseSimpleLogger(loggerFactory);
        }
    }
}