Archives: web development

Push Notifications – a bigger picture

Many applications we create require the ability to send push notifications. Sometimes we are the ones who made the client and the backend side as well. The available tutorials are helpful but not always entirely clear; we met quite a few challenges. Let’s look at a specific example. –          We’d like to send a push notification from […]

How to make a custom Username Password Authentication Filter with Spring Security

  Introduction Basically I’ll show you how to use Spring Security and how to customize it if you want. First we’ll implement the basic authentication with basic responses and other stuff, and I’ll show you how to customize the login and logout process as you wish  Simple Authentication After you added the required dependencies described on Spring’s website, […]

Ray Tracing with Akka – Part 4

Where did we stop last time? Read the first part of this series for an intorduction to ray tracing and what I wanted to achieve. Here we created a sphere and a shadow. Read part two for a discussion on creating a plane and letting our objects reflect and refract. Part three has been the most advanced, in here we built […]

Spring & Multiple SQLs: How to easily connect your Spring application to multiple SQL databases

This post will show you how to connect your Spring application to multiple SQL Databases at the same time. But first, let’s see when multiple DB connections are useful. For example you have an application and you have that application set up in different environments (let’s call it “prod app”), and you want to write […]

Ray Tracing with Akka – Part 3

Where we left off In the last two posts, we reached the capabilities of a simple ray-tracer. We now have two types of shapes (sphere and plane), we can calculate shadows, reflections and refractions recursively. Before we move onto the more computation-heavy shapes, I am curious about how I could move our computations to separated nodes. So […]

How to write cancellable http requests with Angular $http service

Inspiration The recent spread of the mobile internet connection almost completely changed the job profile of almost every frontend-developer. We steadily try to make our web pages responsive, and fearlessly fight against a wide variety of mobile browsers. But the mobile internet access has one more, a less freqently mentioned danger that causes sleepless nights […]

A Quick Guide to Implement a Cross-Browser AngularJS Pull-to-refresh Directive

What made me do this? As a newbie in frontend development, I have to admit, a few months ago I couldn’t even imagine myself writing my own UI component. In those good days, I just carelessly included other, ready-to-use components and never thought about why and how they really work. Sometimes these plugins caused me […]

Deploying a Play! app to Azure via Jenkins

Here at Wanari, we use Play Framework for many of our projects and maintain products on our own servers. Not too long ago, a client of ours requested to move such product to Azure Cloud. After a bit of research we found 3 options: We create a Virtual Machine on which we arrange the environment we use on […]

Monday Morning with a Content-Security-Policy HTTP Response Header

The story Mondays are always a unique mixture of a new beginning and unexpected surprises in every office. Sometimes you find a solution for a long-standing problem, but you never know what awaits you in your mailbox after a long, unclouded weekend. The Monday morning, on which my story begins, is a good example for […]