Ethereum – Create a private PoA blockchain

Ethereum – Create a private PoA blockchain

Hello Techpate guest, this tutorial will demonstrate how you can setup a private Proof of Authority(PoA) Ethereum Blockchain on AWS. The public Ethereum Blockchain uses Proof of Work(PoW) which has the disadvantage that it consumes a lot of computing capacity to mine a block. I want to setup the chain on a small AWS instance with only a Continue reading Ethereum – Create a private PoA blockchain

LoopBack.io – Create an API

LoopBack.io – Create an API

Hello Techpate guest, in this tutorial I want to demonstrate how you can easily create an API with LoopBack.io. To get startet you have to install following tools: NPM(Installation information: https://www.npmjs.com/get-npm ) LoopBack.io (Installation information: https://loopback.io/doc/en/lb3/Installation.html) To start the LoopBack.io cli just run the following command in a terminal:

This command starts a wizard Continue reading LoopBack.io – Create an API

Chrome Extension – Implement an extension which changes the background color

Chrome Extension – Implement an extension which changes the background color

Hi Techpate guest, this tutorial shows you how you can create a chrome extension project with yeoman. After creating the project I will show you how you can write a small extension which changes the backgroundColor of a website. But first, we need  Yeoman, Grunt and Bower.  With this tools we can use the generators to Continue reading Chrome Extension – Implement an extension which changes the background color

SpringBoot – Unit/Integration Testing

SpringBoot – Unit/Integration Testing

Hello Techpate guest, in todays tutorial I want to address the topic testing and how you can test your web interfaces, also known as integration tests. If we want to start writing tests we need to add some dependencies to the pom.xml file, if not already available.

We need a class which will contains Continue reading SpringBoot – Unit/Integration Testing

Android – Implement buttons, textviews, edittexts

Android – Implement buttons, textviews, edittexts

Hello Techpate guest, the topic of this tutorial is Android App development. I want to show you how you can add widgets like Buttons, TextViews and EditTexts to your user interface and how to implement them in your Java code. To add ui elements to your user interface you have to go to the folder app/res/layout, Continue reading Android – Implement buttons, textviews, edittexts

SpringBoot – Save data to an embedded database

SpringBoot – Save data to an embedded database

Hello Techpate guest, this is a new tutorial with the topic how to save data to an embedded database with SpringBoot. I will show you the important code snippets to implement this functionality. In the last tutorial(link) I showed you, how you can implement an API which reacts on POST and GET requests. In this Continue reading SpringBoot – Save data to an embedded database

SpringBoot – How to implement GET POST endpoints

SpringBoot – How to implement GET POST endpoints

Hello Techpate guest, this is a new tutorial on how you can implement GET and POST endpoints with SpringBoot. I want to show you how you can easily implement these endpoints with a few lines of code. If you want to extend your web application with the functionality to react on HTTP GET or POST Continue reading SpringBoot – How to implement GET POST endpoints