How to Get Started with Java Micro Services

1. How to Get Started with Java Microservices Microservices have become increasingly popular over the years and across various industries in the digital world. The trend today is that businesses now have less interest in developing large applications unlike before. Most businesses today are opting for quick as well as agile applications that work great and cost less. Microservice is just the way on how this new trend is achieved. In fact, it involves building logically independent smaller systems inside a bigger system. Each microservice within a bigger system has its database as well as business layer. When this is done, the changes that happen to one microservice will not affect the other microservices. Microservices still can communicate with each other using lightweight protocols like REST, messaging protocols, and HTTP. Must-Have Principles of Microservices If you are thinking of incorporating microservices in your services, it would be best to learn more about and the principles that are involved in this concept. - Single Responsibility Principle This principle basically talks about a microservice, a class, or a function having one and only one responsibility. This principle is defined as part of the SOLID design pattern. The SOLID design pattern involves a set of practices that when implemented together will make the code more adaptive to change. If you think of a microservice, it should have only one responsibility or function. For this reason, there can be numerous microservices existing in one large system unit. Built Around Business Capabilities When it comes to microservices, it is important to note that they should focus on a specific business function. This microservice should help be programmed in such a way that it will help in getting things done. It should not be restricted in adopting an appropriate technology stack that is most suitable for solving problems or perhaps achieving business purposes. Compared to designing one large system like in a monolithic application, microservices will solve specific business problems and will not compromise other areas in business. Monolithic applications revolve around the concept of solving multiple business issues. While the best business solutions may be developed, some compromises may be experienced in other parts of the business. With microservices, you have a specific goal and you are able to choose the best solution for a specific issue without compromising other parts of the business.

2. Sense of Ownership Another principle of microservices is the sense of ownership and the responsibilities involved in the predevelopment and post-development of the microservice. Unlike large organizations where there is only one team that develops the app and after some knowledge transfer session the application will be handed over to another team, microservice will be built and owned by one team. In microservice, the team that builds the service will own it and will become responsible for the maintenance of the service in the future. This concept will allow the developers to be aware of the daily operation of the software. Also, they will be able to better understand how their product is being used by consumers in real-time. Infrastructure Automation Another important principle in microservice is the preparation and building of the infrastructure. A microservice must be independently deployable. Likewise, it must bundle all dependencies including execution environments like web servers, library dependencies, and virtual machines. Basically, a microservice will be built as a single service where all dependencies are embedded. It will run as a standalone Java process. Designed for Failure When building a microservice, the maker shall build it with failure cases in mind. It must be designed for failure. Basically, the maker should ask what if the service fails and how will it affect the user experience. Such questions must be answered even before the actual coding begins. When it comes to microservice, a concept that must be utilized involves building fault-tolerant as well as resilient systems. Such a concept actually creates systems that expect failures and not systems that never fail. Since the service can actually fail at any given time, it is important to detect such failures quickly and resolve the failures automatically so the service can be restored. With that said, microservice applications focus more on real-time monitoring of the application, where the maker should be able to check both business-relevant metrics and architectural elements of the application. With reliable monitoring, early warning signs can be triggered so timely follow-up, investigation, and resolution are provided. Why Should You Choose Microservices? Compared to traditional monolithic architectures, microservices offer numerous benefits. Here are some of them:

3. ● With microservice, developers can specifically design and plan each microservice for a specific purpose, architecture, and technologies. This will allow flexibility to design solutions that are best fit more cost-effectively. ● Since the service is rather simple and smaller in terms of size, most businesses can afford to experiment with new processes. This allows businesses to pursue disruptive innovation. ● Microservices are able to promote selective scalability which means that each service can be independently scaled down or up depending on the business needs and preference. The cost of scaling is significantly lower compared to that of the monolithic approach. ● Since microservices are considered independent deployment modules, one service can be substituted accordingly. This can happen when one microservice is not performing well as per the business’ needs, as it can easily be substituted with another similar microservice. Java microservice is a great concept that businesses should look into if they want to develop their businesses digitally and in the most cost-effective way. If you are thinking about adapting this concept, learn more about it and start developing it for your business. Find Java developer jobs from Mphasis. Check Mphasis Careers. Mphasis (BSE: 526299; NSE: MPHASIS) applies next-generation technology to help enterprises transform businesses globally. Customer centricity is foundational to Mphasis and is reflected in the Mphasis’ Front2Back™ Transformation approach. Front2Back™ uses the exponential power of cloud and cognitive to provide hyper-personalized (C=X2C2 TM=1) digital experience to clients and their end customers. Mphasis’ Service Transformation approach helps ‘shrink the core’ through the application of digital technologies across legacy environments within an enterprise, enabling businesses to stay ahead in a changing world. Mphasis’ core reference architectures and tools, speed and innovation with domain expertise and specialization are key to building strong relationships with marquee clients.