Eco friendly

You are aware that digital technology contributes day after day to climate change.
As a developer, we have a responsibility to limit the use of machine resources (CPU, disks and network traffic) as much as possible.
It is for this reason that I strive as best as I can to optimize ZnetDK 4 Mobile in its design and its improvements so that the applications developed are as sober as possible in their consumption of machine resources.
I present to you below the choices made and the strategies applied to achieve them.

Reduced size of web resources

Saved machine resources: Network traffic, CPU, Storage

See below the web resources downloaded by the web browser when the ZnetDK 4 Mobile Starter App is displayed for the first time (file cache is empty).

Progessive Web Application (PWA)

Thanks to PWA technology, the service worker installed when the application is first loaded, has stored in the browser's cache memory the main web resources required to display and operate the application.
When the application is loaded the following times in the web browser, the web resources stored in the cache memory are no longer downloaded.
So only 5.8 kB are transferred which represents a saving on network traffic of approximately 97%.

Small disk space required on web server

Only 3 MB of space disk is needed to install ZnetDK 4 Mobile on your web hosting.

Single Page Application

The ZnetDK 4 Mobile web applications are designed as Single Page Application (SPA) which means that only the layout of the HTML page is loaded when the application is accessed from the web browser.
When an application view and its data needs to be displayed, the HTML code of the view and the data in JSON format are loaded on demand in AJAX and added to the main page's DOM (i.e. Document Object Model), without the need to completely reload a new HTML page.

HTML code of application views loaded only once.

After a view has been loaded for the first time in the DOM, during subsequent displays of the view, its HTML code is not reloaded, only its data is reloaded in JSON format.

Autocomplete suggestions in cache

Saved machine resources: Network traffic

When suggestions are fetched from the web server and displayed by the Autocomplete widget, they are stored in the browser's cache in case the same suggestions might be offered the next time a keyword is typed into the same autocomplete widget.
Network traffic can be optimized by tweaking the autocomplete properties.

Logged in user informations in session

To limit the number of SQL query executions, the information of the logged in user is stored in session and accessible via the ZnetDK PHP class \UserSession.

Limited SQL query executions

ZnetDK 4 Mobile is designed to reduce the number of SQL queries executed by the SQL server as much as possible.
To trace and reduce the number of queries executed by features added to your web application, the CFG_SQL_TRACE_ENABLED parameter can be enabled.

Compatible with recent PHP versions

It is recommended to run server-side application processing with the most recent version of PHP.
Since version 7.0 of PHP, the execution of PHP scripts has been particularly optimized, which has the effect of drastically reducing CPU usage.
The latest version of ZnetDK 4 Mobile is compatible with PHP version 8.4 which should be preferred as much as possible.