What is microservices Architecture?

Microservices architecture (often referred to simply as microservices) is a form of architecture used to develop applications. Microservices enable large applications to be broken down into independent components, each with its own area of responsibility. When processing a user request, a microservices-based application may invoke many internal microservices to collectively generate its response.

Containers are an excellent example of a microservice architecture because they allow you to focus on developing services without worrying about dependencies. Modern cloud native applications are often built as microservices using containers.

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Important features of microservices architecture

  • The entire application is broken up into separate subprocesses that contain multiple internal modules.
  • In contrast to Modular Monoliths or SOA, microservice applications are vertically split according to business scope or domain.
  • Microservice boundaries are external, and microservices communicate with each other through network calls (RPCS or messages).
  • Microservices are standalone processes that can be deployed independently.
  • They communicate in a lightweight manner and do not require any intelligent communication channels.

Advantages of microservices architecture

  • Better development scale.
  • Faster development.
  • Support iterative development or modern incremental development.
  • Take advantage of modern software development ecosystems (cloud, container, DevOps, Serverless).
  • Supports horizontal and fine-grained scaling.
  • Small size, reducing the cognitive complexity of developers.

Disadvantages of microservices architecture

  • Higher order of magnitude active components (services, databases, processes, containers, frameworks).
  • Complexity shifts from code to infrastructure.
  • Large increase in RPC calls and network communications.
  • The security management of the whole system is more challenging.
  • The whole system becomes more difficult to design.
  • Introduces the complexity of distributed systems.

Build a microservice architecture

Microservices can be built in many different frameworks. Here are some of the more popular ones:

  • **Spring Boot with Spring Cloud — ** Full stack microservices framework based on Java Spring Cloud, rich extension features.
  • ** vert. x — ** A tool that runs on the JVM, supports a choice of languages and provides a simple API.
  • **Akka — ** An Actor model framework ideal for responsive micro-services.
  • **Quarkus — ** Kurbernetes Native Java framework for building modular microservice applications
  • **Falcon — ** A Python framework focused on quality control and optimized for microservices.
  • **Molecular – ** An event-driven Node.js microservice framework.

How do I deploy microservices

  • Here are a few options. You can also choose to combine several of them for microservice deployment.
  • Cloud deployment, with very good scalability, can provide corresponding services for users in different regions
  • Container deployment can greatly reduce the time to product launch, and can easily expand applications and solve problems quickly
  • PaaS (platform-as-a-Service) deployment, renting development tools, infrastructure, and operating systems from cloud providers
  • Serverless deployment: This deployment mode is applicable to flexible peak traffic scenarios
  • Build your own IT infrastructure and, if you have the resources, consider deploying IT that way.

How are microservices monitored

  • There are many monitoring tools for you to choose from. Here are some of my recommendations:
  • Datadog** – ** This tool is commonly used for service monitoring, log tracing analysis, and exception alarms. Very efficient in anomaly detection and performance monitoring.
  • Dynatrace** — ** An AI-powered platform for monitoring dynamic hybrid cloud environments.
  • NewRelic** – ** a centralized monitoring and reporting tool for cloud environments.
  • Splunk** – ** A lightweight tool for log analysis.
  • AppDynamix** – ** A tool for monitoring application and server performance in real time.
  • – An open source performance monitoring and network monitoring tool.

How do I automate the CI/CD process

  • Microtica covers the entire software delivery automation process, from complete cloud infrastructure setup to using Kubernetes to deliver applications and services in the cloud. Microtica sets standards for how developers develop, test, and deploy code in the cloud. This allows their work to be reused on future projects.

How to test

  • Here are some of the methods we used:
  • Unit integration tests were performed using Mocha**+**Chai
  • Use Postman for API automation testing. We define a test case for each public API, execute them every morning, and get the test report immediately. If a problem occurs, we immediately fix the problem and deploy the change to production.

When to use microservices?

  • The project will have many new features in the future

  • Projects often release new features

  • The project has multiple subdomains and subservices

  • The company’s business is planning to expand

  • The project has a large team that can handle different microservices simultaneously

  • Have agile, cross-functional teams and are collaborating on large projects

  • However, before you start using the microservices architecture, be sure to consider the following:

  • How much storage does the project need? If the project relies on local storage, there is no flexibility for service scaling. Applications will also be unable to handle large workloads.

  • Is the application event-driven? If so, your application should be able to implement asynchronous processing because your application will be deployed across multiple machines.

  • Flexible messaging mechanisms are required. There are multiple event sources in a microservice project and they all have to be processed. Therefore, a strong messaging model is needed.

  • Because microservices will use their apis to communicate, creating an API communication pattern is essential.

  • Microservices require a more secure model that allows one microservice to access only the resources it needs without exposing other microservices to security threats. Microserver has revolutionized software architecture. When building a microservice application, consider all scenarios carefully. Netflix, Amazon, Uber, and Spotify decided to apply microservices architecture to building their own large, complex applications to take advantage of the unique advantages of microservices. However, only a few of the tech giants have fully embraced the microservices architecture and taken advantage of it. However, whether to migrate to microservices depends on the project and team structure. This is important for the entire company, so it should be carefully discussed and evaluated before using microservices.