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CQRS Pattern

CQRS Pattern

CQRS, which means _Command_ _Query Responsibility Segregation_, comes from CQS (_Command Query Separation_) introduced by Bertrand Meyer in _Object Oriented Software Construction_. Meyer states that every method should be either a _query_ or a _command_.

Dive into mobile development: where to start

Dive into mobile development: where to start

These days more than ever before mobile applications have become essential in the lives of millions of people. If you are reading this article, it means that you too are interested in this subject. I'll try to make a series of articles to share with you as much as I can on it.

Push notification on your website

Push notification on your website

The convenience of PWA is to act like a mobile application, to be installed on a phone, to manage off-line mode, and especially to send push notifications. Notifications are the essential element of user involvement, they allow to send a reminder and to communicate with our users

Handle exceptions gracefully

Handle exceptions gracefully

Hello everyone! Today I would like to speak about a subject too little discussed in php: the exceptions. An exception is an alert issued when the code is executed, to indicate that something has not happened as expected. It can be a bad connection identifier to the database, or an operation on a file that is not allowed, or a division by zero for example.

Mutation Testing - Check the quality of your unit tests

Mutation Testing - Check the quality of your unit tests

It is well established : unit tests are mandatory when developing an application. They allow to highlight possible regressions when code is modified, so the developer gets a certain confidence when shipping his code to production : If tests do pass, everything works correctly.

Use the Symfony Workflow component

Use the Symfony Workflow component

Since Symfony 3.2, a new useful component was born: the [Workflow component](http://symfony.com/blog/new-in-symfony-3-2-workflow-component).