It was released on March 20, 2018. It is a short-term release without LTS support. Let's get into details. Local-Variable Type Inference Ahh...good'ol javascript. Well this is more like a sugar syntax. Instead of declaring inside a method a local variable with private void method(){ List<String> strings = new ArrayList<>(); // do other stuff }… Continue reading Java 10 features
Java 8 release represented a new stepping stone in the history of java. It marks the transition to functional style programming. Most of us are working with 8, but let's see what it was introduced in 9. It is a minor release, but we must understand where java is going because of the 6 month… Continue reading Java 9 features
At some point we all worked with a relational database. We all had problems with query performance and we fixed them usually by first looking at indexes. We looked at the columns, at the foreign key for the presence of an index. We noticed there some kind of B-tree structure. Now I'm gonna explain how… Continue reading B-Tree index structure
We found a structure that works for our service.(eg clean architecture). That means we have a domain layer, a data access and application layer and of course our presentation layer which can be a rest endpoints layer. Now we want all our services to respect this structure and also we don't want to manually copy… Continue reading Maven Archetypes
BOM stands for Bill of Materials. Basically we can use it to store in one place all the dependencies with their versions. It's useful in the case microservices are used to make sure same versions are used everywhere. Of course this is not necessarily a requirement for microservices, as you have the choice to build… Continue reading Maven BOM
Every application should have functional and non-functional tests. Non-functional include load and performance. So what happens when we do not meet the performance requirements? Obviously we try to figure out what is going on. This is called profiling. In this post I will write about how to profile an application with spring. Photo by João Silas on Unsplash… Continue reading Profiling with Spring
Lately I've been fascinated by the idea of domain driven design. Before diving more deeply into it we must understand the concepts that are being used. Entities Each object should be uniquely identified. The entity should contain those attributes that are required in order to uniquely identify the object. For example for a Car the… Continue reading Domain driven design concepts
