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Tech blog of j-labs' engineers. Experiences, knowledge, solutions.

UseEffect hook

If you want to fully switch from classes to functional components with hooks, you need to not only get the knowledge about handling state within component, but also how to perform side effects. The answer is pretty simple, you need to learn useEffect hook!

Bartłomiej Szajewski |

27 May 2020

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UseEffect hook

27 May 2020 | Bartłomiej Szajewski

If you want to fully switch from classes to functional components with hooks, you need to not only get the knowledge about handling state within component, but also how to perform side effects. The answer is pretty simple, you need to learn useEffect hook!

Read more
4

Introduction to Micronaut

20 May 2020 | Jacek Mazgaj

It's hard to say and calculate how many phones and computers are currently connected to the internet, considering the IoT devices that number is probably significantly bigger. The amount of physical users also grows every day, and some of them are currently having a bunch of devices with internet access.

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5

Spring Boot Actuator

13 May 2020 | Marcin Rozmus

One of the Spring Boot project is Spring Boot Actuator. This starter brings you production-ready features to help you monitor, gathering metrics, understanding traffic or the state of database and manage your application.
It exposes operational information about the running application by HTTP endpoints or JMX beans. And the best part is - only thing you need to do is to include it in your dependencies!

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6

Flask-RESTful - How to quickly build API

06 May 2020 | Jacek Zygiel

  Python 

REST architecture is currently very widely used. There are many frameworks which allows developer to easily build REST api. Flask is a micro-framework which provides tools that allows to build a web service. Flask-RESTful is an extension to Flask microframework, which simplify creation of REST API.

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How to use and how not to use Optional in Java

29 Apr 2020 | Krzysztof Mazur

  Java 

If you are bored by null checking objects and want to make your code more readable, you should consider using Optional class. It is a container used to represent null with absent value.

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Thunkable fun with a drag-and-drop app builder

23 Apr 2020 | Marcin Łącki

  Mobile Java 

Are you programmer?
Do you need no-code tool?
Probably your answer is **no**. Sometimes you need a fast app prototype and sometimes a non-technical person asks you "how to build mobile apps?" Thunkable is the answer.

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9

Storybook for Angular - creating components library

15 Apr 2020 | Michał Pluta

Imagine a situation where you have a big monolith project and there's a need to separate re-usable components throughout application or you're starting a microfrontend application with separated UI components. Additionally, a readable and well-defined documentation is essential in both cases.

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Spring Boot - more advanced (auto)configuration

08 Apr 2020 | Marcin Rozmus

In our first tutorial we showed you how to move your existing application (or set up new one) with Spring Boot. In this tutorial we want to show you how easy Spring Boot manage other parts of your application.

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Testing REST API with Serenity and Rest-assured

06 Apr 2020 | Jacek Zygiel

Rest-assured is a Java framework for testing and validating REST APIs.

Serenity is an automated BDD(Behaviour driven development) acceptance testing framework. Rest-assured combined with Serenity in connection provides a tool for easy creating of BDD api tests and generates neat and good looking reports.

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