What are microservices

In general terms, they are the independent sub-components of an application that run independently and communicate with each other as part of a modern and scalable architecture.  Some of the defining characteristics are –  Processes that communicate over a network to fulfill a goal using standard protocols such as HTTP, are independently deployable, organized around business capabilities, implemented using different programming languages, databases, hardware and software environment, are small in size, messaging-enabled, bounded by contexts, autonomously developed, independently deployable, decentralized, and built and released with automated processes.  A microservice is not a layer within a monolithic application. It is a self-contained piece of business functionality with clear interfaces, and may implement a layered architecture.  Micro-services lends itself to a continuous delivery software development process. A change to a small part of the application only requires rebuilding and redeploying only one or a small number of services.  It’s common for micro-services architectures to be adopted for cloud-native applications, serverless computing, and applications using lightweight container deployment.

What are the Benefits of implementing Microservices?

  • Since they communicate via messaging if at all, they’re not dependent on the same coding language. Developers can use the programming language that they’re most familiar with. This helps them come work faster, with lower costs and fewer bugs
  • Since your teams are working on smaller applications and more focused problem domains, their projects tend to be more agile, too. They can iterate faster, address new features on a shorter schedule, and turn around bug fixes almost immediately. They often find more opportunities to reuse code, also.
  • Microservices can improve an architecture’s scalability.
  • With monolithic systems, you usually end up “throwing more hardware” at the problem or purchasing expense and difficult-to-maintain enterprise software. With microservices, you can scale horizontally with standard solutions like load balancers and messaging.
  • As more and more enterprises embrace the cloud, Microservices are a great way to get there.

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