Microservice Architecture Geeksforgeeks

Bonisiwe Shabane

-Nov 29, 2025, 9:02 PM

Microservices are an architectural approach to developing software applications as a collection of small, independent services that communicate with each other over a network. Main components of microservices architecture include: Below are the main design pattern of microservices: API Gateway pattern simplifies the client’s experience by hiding the complexities of multiple services behind one interface. It can also handle tasks like authentication, logging, and rate limiting, making it a crucial part of microservices architecture. Service Registery pattern is like a phone book for microservices.

It maintains a list of all active services and their locations (network addresses). When a service starts, it registers itself with the registry. Microservice Architecture is a special design pattern of Service-oriented Architecture. It is an open source methodology. In this type of service architecture, all the processes will communicate with each other with the smallest granularity to implement a big system or service. This tutorial discusses the basic functionalities of Microservice Architecture along with relevant examples for easy understanding.

This tutorial has been prepared for beginners to help them understand the basic concepts of Microservice Architecture. This is a very basic tutorial and to make the most out of it, a reasonable knowledge of basic computer programming and Service-oriented architecture is required. Microservices is a service-oriented architecture pattern wherein applications are built as a collection of various smallest independent service units. It is a software engineering approach that focuses on decomposing an application into single-function modules with well-defined interfaces. These modules can be independently deployed and operated by small teams that own the entire lifecycle of the service. The term “micro” refers to the sizing of a microservice which must be manageable by a single development team ( 5 to 10 developers).

In this methodology, big applications are divided into smallest independent units. In layman terms, you can say that Monolithic architecture is like a big container in which all the software components of an application are clubbed into a single package. Let’s discuss an example of an eCommerce store in context of a Monolithic architecture. In any e-commerce application, there are some standard features like Search, Review & Ratings, and Payments. These features are accessible to customers using their browser or apps. When the developer of the eCommerce site deploys the application, it is a single Monolithic unit.

The code for different features like Search, Review & Ratings, and Payments are on the same server. To scale the application, you need to run multiple instances(servers) of these applications. In software development, developers are following different approaches, technologies, architectural patterns, and best practices to build high-quality software or systems. Microservice is one of the popular architectural pattern styles followed by the industry. You might have heard this name, and you might have worked on it. In a microservice architecture, we break down an application into smaller services.

Each of these services fulfills a specific purpose or meets a specific business need, for example, customer payment management, sending emails, and notifications. In this article, we will discuss the microservice architecture in detail, the benefits of using it, and how to start with the microservice architecture. In simple words, it's a method of software development, where we break down an application into small, independent, and loosely coupled services. These services are developed, deployed, and maintained by a small team of developers. These services have a separate codebase that is managed by a small team of developers. These services are not dependent on each other, so if a team needs to update an existing service, it can be done without rebuilding and redeploying the entire application.

Using well-defined APIs, these services can communicate with each other. The internal implementation of these services doesn't get exposed to each other. Each of the services in microservice is deployed independently. As we have discussed that a small team takes the responsibility for these services to build, test and deploy them. This enables faster development. Also, it becomes easy to fix the bug and release the features.

You can easily update the service and roll it back if something goes wrong. Access to this page requires authorization. You can try signing in or changing directories. Access to this page requires authorization. You can try changing directories. Microservices are a popular architectural style for building applications that are resilient, highly scalable, independently deployable, and able to evolve quickly.

Building a successful microservices architecture requires a fundamental shift in mindset. It goes beyond decomposing an application into smaller services. You must also rethink how systems are designed, deployed, and operated. A microservices architecture consists of a collection of small, autonomous services. Each service is self-contained and should implement a single business capability within a bounded context. A bounded context is a natural division within a business and provides an explicit boundary within which a domain model exists.

The diagram illustrates a microservices architecture deployed on Microsoft Azure. It's organized into eight labeled sections that each represent a key architectural component. The layout flows from left to right and top to bottom. On the far left, icons labeled clients represent users or external systems that initiate requests to the application. An arrow points from the clients to an API gateway. Requests flow through the API gateway and on to the appropriate microservices.

Arrows point from the API gateway to a box labeled microservices. This box contains two icons for domain services, one icon for composition services, and one icon for service. Arrows point from the microservices to another box that's labeled domain databases. This box contains icons that represent two SQL databases and a NoSQL database. Arrows also point from microservices to a box labeled message-oriented middleware. The arrows are labeled publish or subscribe and events.

The diagram also includes boxes that represent observability, management and orchestration, and DevOps. As companies require more scalability and flexibility, microservices architecture has become a trend. But what are microservices exactly? Read on to find out. In recent years, the ubiquity of mobile computing has required application developers to deploy actions quickly and make changes to applications without complete redeployment. This has led to a new development paradigm called “microservices.”

Microservices are lightweight, self-contained components that perform respective functions within an application, communicating with each other via APIs. This new approach seems quite popular, as 85% of companies are using microservices as part of their architecture. Although independent of each other, these microservices work together to achieve the desired results. Earn rewards every day with the T-Mobile Visa® Enjoy checking with no fees or minimums. Ask the right questions when car shopping

Earn 400k bonus miles with Venture X Business Capitalize on investment banking solutions. In the ever-evolving landscape of software development, one architectural pattern has gained significant traction over the last decade: Microservices. As applications grow more complex and the demand for scalability, agility, and rapid deployment increases, traditional monolithic architectures often fall short. Microservices architecture offers a solution by breaking down large, monolithic systems into smaller, manageable, and independently deployable services. This approach has been embraced by tech giants like Amazon, Netflix, and Google, transforming how we build and maintain applications.

In this post, we'll dive deep into the world of microservices, exploring its benefits, challenges, and best practices for implementation. Microservices, also known as the microservices architecture, is an architectural style that structures an application as a collection of loosely coupled services. Each service is designed to handle a specific business capability and can be developed, deployed, and scaled independently. These services communicate with each other using lightweight protocols, typically HTTP/REST or messaging queues. Unlike monolithic architectures, where all components are interconnected and run as a single process, microservices are modular and can be deployed across different servers or even in the cloud. This decoupling of services allows for greater flexibility and scalability, making it easier to maintain and upgrade individual parts of the application without affecting the entire system.

Independence: Each microservice is a separate entity with its own database and can be developed, tested, and deployed independently of other services. This isolation reduces the risk of system-wide failures and allows teams to work in parallel. Microservice is a service-based application development methodology. In this methodology, big applications will be divided into smallest independent service units. Microservice is the process of implementing Service-oriented Architecture (SOA) by dividing the entire application as a collection of interconnected services, where each service will serve only one business need. In a service-oriented architecture, entire software packages will be sub-divided into small, interconnected business units.

Each of these small business units will communicate to each other using different protocols to deliver successful business to the client. Now the question is, how Microservice Architecture (MSA) differs from SOA? In one word, SOA is a designing pattern and Microservice is an implementation methodology to implement SOA or we can say Microservice is a type of SOA. Following are some rules that we need to keep in mind while developing a Microservice-oriented application. Independent − Each microservice should be independently deployable. Coupling − All microservices should be loosely coupled with one another such that changes in one will not affect the other.

Microservice Architecture Geeksforgeeks

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