PWA: What, Why, and How?

Overview of Progressive Web Apps from Sam Dutton at Google Developer Days Europe
05 September 2017   1017

Progressive Web App (PWA), in general, is a term used to denote web apps that use the latest web technologies. As such, this year's PWAs will be average web apps in a few years.

Specifically, though, Progressive Web Apps, also known as Installable Web Apps or Hybrid Web Apps, are regular web pages (or websites) but can appear to the user like traditional applications or (native) mobile applications. This new application type attempts to combine features offered by most modern browsers with the benefits of mobile experience. This specific use of the term is the subject of this article.

Progressive Web Apps combine the best of the web and the best of apps. They load quickly, even on flaky networks, can re-engage with users by sending web push notifications, have an icon on the home screen, and load as top-level, full screen experiences. In this fresh videocap from Google Developer Days, Europe 2017 Sam Dutton explains the what, why, and how of Progressive Web Apps, and works through code examples.

Learn more about PWA:

What's new in IntelliJ IDEA 2018.2?

New version of popular IDE improved Spring and Spring Boot support
18 July 2018   110

The new version of IDE IntelliJ IDEA from JetBrains under the number 2018.2 has introduced several functions for developers using Spring and Spring Boot frameworks. Among the innovations: support for Spring Integration, runtime diagrams, library bin management and many minor fixes and improvements.

New features of IntelliJ IDEA

Now you can visualize the components in the system using the new Spring Integration diagram. All versions above 5.0 are supported.

Spring Integratio Diagram
Spring Integration Diagram

It shows all the gateways, channels and bridges of the application, regardless of whether they are configured using Java or XML annotations.

The IDE also received code completion and navigation for such integration annotations as @BridgeTo/From and @EnablePublisher:

Integration Annotations
Integration Annotations

In the new version of IntelliJ IDEA, you can view the dependencies during the execution of the Spring Boot application as a diagram through the control panel. To do this, go to the "Endpoints" section and enable the "Diagram Mode" function:

Runtime Dependencies
Runtime Dependencies

If there are too many beans in the project, the non-user codes can be disabled using the new "Show / Hide Library Beans" switch:

Show / Hide library beans
Show / Hide library beans

In addition, in 2018.2, you can start, modify, and test the display of HTTP requests in the "Endpoints" tab:

HTTP request
HTTP request

A complete list of improvements and changes is available in the technical update document. According to the developers, a lot of work has been done to improve performance in large projects.