This is going to be the first post in a series of articles about modern tooling and techniques for building distributed systems. In this post, I will show how to use Docker for Windows to set up an ELK (Elasticsearch, Kibana, Logstash) server that we are going to use in future articles. The series is particularly geared toward traditional .NET developers. Let’s get started…
When developing web applications, we sometimes need to push server events down to connected clients. However, HTTP was not designed to allow this. To get around this limitation, a polling pattern was established where web pages would intermittently poll the server for any new events. This pattern was not ideal as it added HTTP overhead, was only as fast as the polling rate, and caused unnecessary load on the server.
Luckily, with the emergence of HTML5 came the WebSocket. The WebSocket protocol enables interaction between a browser and a web server with lower overheads. In this blog we’ll introduce the Websockets API and show how to implement Websockets with Spring Boot.
If you are heading down the path of a Microservices style of architecture, one tenant you will need to embrace is automation. Many moving parts are introduced with this style of architecture. If successful, your environment will have a plethora of service APIs available that the enterprise can consume for application development and integration.
This means that there must be a way that available API documentation can be discovered. API information needs to be effectively communicated throughout the enterprise that shows where APIs are used, how often APIs are used, and when APIs change. Not having this type of monitoring in place will hinder and possibly cripple the agility benefits that a Microservice style of architecture can bring to the enterprise.
This blog will describe how Swagger/OpenAPI documentation can be applied to a Spring Boot implementation. We will show how API documentation and monitoring can be automatically published to an API documentation portal.
As an example, we introduce a reference Spring Boot API CRUD application (using Spring MVC/Data with Spring Fox) and set up the automatic publishing of API documentation and statistics to documentation portal GrokOla. In the example, we introduce two open source utilities to help and allow published APIs the ability to be searched and notify users when changed….
Everyone wants to have an “App” to represent them, their company, or just to perform some common task they might have in mind.
The problem with this is that there is so much to mobile app development. iPhone apps require that you have a Mac to compile them. Android apps have to deal with platform fragmentation. iPhone apps can mean working with Objective C, Android can mean Java– and if you aren’t a polyglot and fluent both these languages, you probably feel that mobile app development is quite the daunting task.
Luckily, though, there are other options to choose from – like the Ionic 2 framework. In this blog, we’ll show just how easy it is to get up and running with Ionic 2 by creating a reference mobile application. By the end of this blog, our application will have the ability to run in the browser, emulator, or be built-out to run on a device.
So, you’ve learned JavaScript and now you’re wanting to get into Angular. But where do you start?
There are quite a few examples out there. One of the best ideas I have personally found useful for a new developer to learn is how to do Create, Read, Update and Delete operations.
In this blog we’ll go through the process of building a simple, working Angular address book application with C.R.U.D. operations. By the end, and by studying the full, working code, you should have a better grasp on Angular.