Latest Entries
6 Steps to Making a Killer Landing Page
What are people actually looking for We should never forget that the main idea of a landing page is to convert our users by mesmerizing them and giving them the exact information they are looking for. It may seem odd in the beginning, however it’s quite common...
Implementing custom authorization function for Spring’s @Pre and @Post annotations
The @Pre and @Post annotations provide mechanism to enforce access control by using Spring EL expressions. EL expressions have the ability to invoke methods. Spring provides some default methods that can be used to implement authorization. One such method is has...
By Nikola Nenov
What needs to be unit tested. How much code coverage is needed.
The purpose of this article is to show what you should test and what you should NOT test on your application. No code will be shown here but an abstract view about the topic. Martin Fowler blog and posts from Stackoverflow community were used as a reference. Tes...
Implementation of CRUD operations for database entity with AngularJS, Spring Boot and Spring-Data-JPA
In this article, I will show you how to implement CRUD (Create, Read, Update, Delete) functionality for a database entity. We will start by creating the tables in the database, after that we will define the entity in the java code. We will use spring-data-jpa to...
Applying internationalization and localization to AngularJS application
As we all know, first impression is very important. It is good user experience to display the text and apply the locale of the application in the user’s own language. In this blog, we will see how to achieve this by adding few plugins to an existing project. P...
Data visualization under 15 minutes with the ELK stack
Following the series of my previous blog posts regarding data visualization with Highcharts and AngularJS, this time I’ll show you how easily the same outcome can be accomplished with another software stack – the ELK (Elasticsearch, Logstash and Kibana)....
Database migration to different table structure and different database server
Sometimes if we have to rewrite a very old system, we might want to change the database tables structure and the database server to a more suitable ones. However this is not an easy task. We can’t dump the database and restore it directly, because the database...
By Nikola Nenov
Development of RESTful API with Spring Boot in less than 20 minutes
The purpose of this blog is to show how to build restful web services using Java and Spring Boot. I will try to show you some of the best practices you should know when you have to develop that kind of service. Web APIs has become a very important topic. Typical...
Java8 LocalDateTime to Joda LocalDateTime with jackson
Yesterday I fought a problem that didn’t seem to take as much time as it actually did, so I decided to write a few lines to share the learned lesson. I had the following case: a spring boot rest service, that returns a JSON object, and a consumer that re...
Vert.x and Spring – implementing fully functional microservices eco system in under 15 minutes.
Building Microservices was the final book covered by our company’s training program. I can strongly recommend reading it if you want to get familiar with the trendy topic of developing microservices and the different features of the architectural style itself....
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