Bringing a Microservice Into an AWS App Mesh

Brad Flood Articles, AWS, Cloud, Development Technologies & Tools, Microservices Leave a Comment

Remember when Netflix first came out with its suite of distributed components? It included Eureka for service discovery, Hystrix for circuit breaking, and Zuul for intelligent routing. Netflix was running on an AWS infrastructure back then, but the infrastructure didn’t exist for Netflix to manage its microservice ecosystem. The industry has come to describe the Netflix components within the larger context of a service mesh.

AWS recently introduced App Mesh, a highly-available set of services that integrate with the AWS ecosystem and provide the capabilities Netflix was looking for back in the day.

In this post, we provide an introduction to AWS App Mesh and show a quick tutorial of bringing a reference microservice into an AWS App Mesh.

Part 1: JavaScript Application Introduction

Chris Berry Articles, Development Technologies & Tools, JavaScript, Node.js, Single-Page Application, solidfoundationsseries, Vue.js 2 Comments

Part of the Solid Foundations Learning Series
This is the introductory post to an in-depth series of articles that will tell the story of why and how a specific web application was built. In a nutshell, it is a JavaScript-based suite of single-page applications optimized for use in a microservice environment.

In this post, we will set the stage for the series and introduce the overall design and structure of this application. In future posts of this series, there will be technical discussions about certain parts of the application and there will be theory discussions for other aspects of the application.

The web application we will be talking about started its life as a simple NodeJS and Express application….

Lean Mean Vue Machine

Chris Berry Articles, Development Technologies & Tools, JavaScript, Vue.js Leave a Comment

The year is 2019 and Command Line Interfaces abound for many of the big name JavaScript frameworks such as Angular CLI, Create React App, and the Vue CLI.

But wouldn’t it be nice to go back to the days when you could just drop a simple script tag on a page and be able to run an application? Well, here is my attempt in trying to accomplish just that.

In this post, we create a working Vue.js web application with standard CRUD functionality and deploy it without any extra dependencies other than the actual application itself.

.NET Memory Management with dotMemory

Jason Schmidtlein .NET, .NET Core, Articles, Development Technologies & Tools 3 Comments

Given the maturity of the .NET Framework and the automated nature of its memory management, many developers are guilty of glossing over (or even outright ignoring) whether their code is optimal in terms of CPU and memory usage. Personally, I have caught myself making sure my code is maintainable, testable, and extendable while forgetting to consider memory management in terms of nonfunctional aspects.

While the .NET runtime does a great job and memory corruption is extremely rare, we should still be concerned with memory management, particularly in large-scale .NET base applications.

This concern isn’t limited to on-premise applications. It’s easy to forget about memory usage with cloud computing. Azure Functions and AWS Lambda have billing structures based upon the average memory size per second of function execution. The direct correlation between memory usage and cost couldn’t be more transparent.

Fortunately, there are many great tools to help profile and analyze your memory footprint. JetBrains has a fantastic tool called dotMemory which makes it easy to profile processes, auto detect issues, perform deep analysis, and determine traffic. dotMemory can be installed as either a stand-alone tool or as a part of the ReSharper package integrated into Visual Studio.

In this post, we’ll show how to use dotMemory to generate a memory profile and analyze a memory leak in a .NET Core application.