Book Image

PHP Microservices

By : Pablo Solar Vilariño, Carlos Pérez Sánchez
Book Image

PHP Microservices

By: Pablo Solar Vilariño, Carlos Pérez Sánchez

Overview of this book

The world is moving away from bulky, unreliable, and high-maintenance PHP applications, to small, easy-to-maintain and highly available microservices and the pressing need is for PHP developers to understand the criticalities in building effective microservices that scale at large. This book will be a reliable resource, and one that will help you to develop your skills and teach you techniques for building reliable microservices in PHP. The book begins with an introduction to the world of microservices, and quickly shows you how to set up a development environment and build a basic platform using Docker and Vagrant. You will then get into the different design aspects to be considered while building microservices in your favorite framework and you will explore topics such as testing, securing, and deploying microservices. You will also understand how to migrate a monolithic application to the microservice architecture while keeping scalability and best practices in mind. Furthermore you will get into a few important DevOps techniques that will help you progress on to more complex domains such as native cloud development, as well as some interesting design patterns. By the end of this book you will be able to develop applications based on microservices in an organized and efficient way. You will also gain the knowledge to transform any monolithic applications into microservices.
Table of Contents (19 chapters)
PHP Microservices
About the Authors
About the Reviewer
Customer Feedback

Chapter 1. What are Microservices?

Good projects need good solutions; this is why developers are always looking for better ways to do their jobs. There is no best solution for all projects because every single project has different needs and the architect (or the developer) has to find the best solution for that specific project.

Microservices are maybe a good approach to solve problems; in the last few years, companies such as Netflix, PayPal, eBay, Amazon, and Spotify have chosen to use microservices in their own development teams because they believed them to be the best solution for their projects. To understand why they chose microservices and understand the kinds of projects you should use them in, it is necessary to know what a microservice is.

Firstly, it is essential to understand what a monolithic application is, but basically, we can define a microservice as an extended Service Oriented Architecture. In other words, it is a way to develop an application by following the required steps to turn it into various little services. Each service will execute itself and communicate with others through requests, usually using APIs on HTTP.

To further understand what microservices are, we first need to understand what a monolithic application is. It is the typical application that we have been developing for the last few years, for example in PHP, using a framework like Symfony; in other words, all the applications we have been developing are divided into different parts, such as frontend, backend, and database, and also use the Model-View-Controller (MVC) pattern. It is important to differentiate between MVC and microservices. MVC is a design pattern and microservices are a way to develop an application; therefore, applications developed using MVC could still be monolithic applications. People may think that if we split our application into different machines and divide the business logic from the model and the view, the application is then based on microservices, but this is not correct.

However, using a monolithic architecture still has its advantages. There are also various huge web applications, such as Facebook, that use it; we just need to know when we need to use a monolithic architecture and when we need to use microservices.