Microservice is a form of service-oriented architecture style, loosely coupled distributed service wherein large application is split into small applications, communicating to each other normally by rest API. Distributed microservice architecture is built to solve the complicity of large monolithic applications.
Let’s consider the example shown in the image below:
Here as you can see in the image, an online shopping application can be either done as a single monolithic application or as a microservice. The application is split into four different modules such as account service, product catalog, cart server and order server. All the mentioned modules are different from each other and are represented as separate microservices that have unique databases.
There are many frameworks that can be used for microservice development in java. Some of them are:
Spring Cloud along with Spring Boot provides tools for developers to build some of the common patterns in distributed systems. Building a microservice in spring boot is easy and is one of the best microservice framework available in java. It works on the principles of aspect-oriented programming, inversion of control, etc.
It is also another open-source framework based on java and it is easy to use.
Before moving into microservices, it’s always better to ensure the following things:
In practical microservices can help in scaling complex applications that have huge loads and requires continuous improvement. But like any other architectural approach microservices are not completely flawless, so you need to figure out whether the above-mentioned points are much relevant to your future application, get professional advice and proceed.
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