![]() Scaling monolithic applications such as the one described in the example can only be accomplished by deploying the same EAR/WAR packages in additional servers, known as horizontal scaling.If a particular function starts consuming more processing power, the entire application’s performance will be compromised. Imagine a web application with separate functions including payment, login, and history. If any single application function or component fails, then the entire application goes down.With this kind of architecture, refactoring the code base becomes difficult because it’s hard to predict how it will impact application functionality. Because the application has been packaged in one EAR/WAR, changing the technology stack of the application becomes a difficult task.As the application grows, so does the associated code base, which can overload your development environment each time it loads the application, reducing developer productivity.However, this example also stands to illustrate some of the challenges developers and architects face with this kind of design. You may already be familiar with the characteristics of monolithic applications depending on your development experience. Here’s an illustration of an example monolithic architecture: Because I have packaged everything as an EAR/WAR, my application becomes monolithic in nature, which means that even though we have separate and distinguishable components, all are packaged together. To run the entire application, I will create either a EAR or WAR package and deploy it on an application server (like JBoss, Tomcat, or WebLogic). Finally, I will design a Database Layer that will be accessible to the underlying persistence system. This is followed by an Integration Layer to enable loose coupling between various components of the Application Layer. The first thing I will do is design a Presentation Layer (the user interface), followed by an Application Layer, which handles all of the business logic. ![]() Let’s start with a simple example: Suppose I need to build a classic web application using Java. Request Demo ❯ The history of microservices From beginner to advanced, the Training Library is loaded with courses to introduce you to microservices or advance your skills on how to build microservices solutions or APIs. If you an your team are new to microservices, check out Cloud Academy’s Training Library. In this blog post, we’ll explore the evolution of development from monolithic architectures toward microservices and its underlying justifications, as well as the pros and cons of microservices. Microservices have gained prominence as an evolution from SOA (Service Oriented Architecture), an approach that was designed to overcome the disadvantages of traditional monolithic architectures. ![]() ![]() Simply stated, microservices are really nothing more than another architectural solution for designing complex – mostly web-based – applications. They are an example of the modular architectural style, based on the philosophy of breaking large software projects into smaller, independent, and loosely coupled parts, which has gained prominence among developers for its dynamic and agile qualities in API management and execution of highly defined and discrete tasks. Microservices have become increasingly popular over the past few years. ![]() Microservices are a way of breaking large software projects into loosely coupled modules, which communicate with each other through simple Application Programming Interfaces (APIs). Let’s start our discussion by setting a foundation of what microservices are. ![]()
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