Service-Oriented Architecture and Microservices

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The Service Mesh in the Microservices World - DZone Microservices

The software industry has come a long journey and throughout this journey, Software Architecture has evolved a lot. Starting with 1-tier (Single-node), 2-tier (Client/ Server), 3-tier, and Distributed are some of the Software Architectural patterns we saw in this journey.

The Problem

The majority of software companies are moving from Monolithic architecture to Microservices architecture, and Microservices architecture is taking over the software industry day-by-day. While monolithic architecture has many benefits, it also has so many shortcomings when catering to modern software development needs. With those shortcomings of monolithic architecture, it is very difficult to meet the demand of the modern-world software requirements and as a result, microservices architecture is taking control of the software development aggressively. The Microservices architecture enables us to deploy our applications more frequently, independently, and reliably meeting modern-day software application development requirements.

#microservice architecture #istio #microservice best practices #linkerd #microservice communication #microservice design #envoy proxy #kubernetes architecture #api gateways #service mesh architecture

A Detailed Introduction to Service-Oriented Programming

Some principles are emerging for what one might call service-oriented programming languages. The principles are general, so they can help when thinking about code even when operating outside of these languages.

A little demo of the code shown in this article can be seen in this video:

The rise of cloud computing has thrown many developers into the world of developing software that consists of services: components that can be executed independently and then be composed by means of message passing.

Microservices continue this practice by making each service “small”, in the sense that it is organized around business capabilities, and potentially developed by an independent team.

Developing (micro)service-oriented systems poses a challenge that motivated substantial efforts in the identification and dissemination of useful tools and design patterns, some new and some well-known. At the latest Microservices Conference (that’s Microservices 2020 at the time of this writing), the people behind the programming languages Jolie and Ballerina teamed up to tell a story that takes this even further: some principles are so important for service-oriented programming that programming languages should consider supporting them natively.

—The banner of the conference Microservices 2020, which was held online due to the COVID situation.

In this article, I attempt at summarising some of these principles and the motivation behind them. You will also find a short video that applies these principles to a simple example.

The list of principles is by no means complete. More will follow. If you have an opinion on the principles listed here, what principles are missing, and how these principles related to existing technologies, I’d love to hear it!

The article consists of two main parts: motivation and principles. They can be read separately at different times, if you’re in a rush.

#microservices #jolie #service-oriented-architecture #service-oriented-computing #programming #microservice-architecture #coding #api

Serverless Vs Microservices Architecture - A Deep Dive

Companies need to be thinking long-term before even starting a software development project. These needs are solved at the level of architecture: business owners want to assure agility, scalability, and performance.

The top contenders for scalable solutions are serverless and microservices. Both architectures prioritize security but approach it in their own ways. Let’s take a look at how businesses can benefit from the adoption of serverless architecture vs microservices, examine their differences, advantages, and use cases.

#serverless #microservices #architecture #software-architecture #serverless-architecture #microservice-architecture #serverless-vs-microservices #hackernoon-top-story

What Is a Microservice Architecture? Why Is It Important Now?

We have been building software applications for many years using various tools, technologies, architectural patterns and best practices. It is evident that many software applications become large complex monolith over a period for various reasons. A monolith software application is like a large ball of spaghetti with criss-cross dependencies among its constituent modules. It becomes more complex to develop, deploy and maintain monoliths, constraining the agility and competitive advantages of development teams. Also, let us not undermine the challenge of clearing any sort of technical debt monoliths accumulate, as changing part of monolith code may have cascading impact of destabilizing a working software in production.

Over the years, architectural patterns such as Service Oriented Architecture (SOA) and Microservices have emerged as alternatives to Monoliths.

SOA was arguably the first architectural pattern aimed at solving the typical monolith issues by breaking down a large complex software application to sub-systems or “services”. All these services communicate over a common enterprise service bus (ESB). However, these sub-systems or services are actually mid-sized monoliths, as they share the same database. Also, more and more service-aware logic gets added to ESB and it becomes the single point of failure.

Microservice as an architectural pattern has gathered steam due to large scale adoption by companies like Amazon, Netflix, SoundCloud, Spotify etc. It breaks downs a large software application to a number of loosely coupled microservices. Each microservice is responsible for doing specific discrete tasks, can have its own database and can communicate with other microservices through Application Programming Interfaces (APIs) to solve a large complex business problem. Each microservice can be developed, deployed and maintained independently as long as it operates without breaching a well-defined set of APIs called contract to communicate with other microservices.

#microservice architecture #microservice #scaling #thought leadership #microservices build #microservice

Learn Overview Of Microservices and Service-Oriented Architecture

What is Service-Oriented Architecture?

• Service-Oriented Architecture (SOA) is a software architectural style that structures an application by breaking it down into multiple components called services.
• Each service represents a functional business domain.
• In SOA applications, each service is independent and provides its own business purposes but can communicate with others across various platforms and languages.
• SOA components are loosely coupled and use a central Enterprise Service Bus (ESB) to communicate.

What is a microservice?

• On the other hand, a microservice is an architectural style that focuses on maintaining several independent services that work collectively to create an application.
• Each individual service within a microservice uses internal APIs to communicate.

Comparison

• Although SOA and Microservices seem similar, they are still two different architecture types. Microservices are like a more fine-grained evolution of SOA.
• One of their main differences is scope. Microservices are suited to smaller modern web services.
• Each service within a microservices generally has one specific purpose, whereas components in SOA have more complex business purposes and functionality and are often implemented as subsystems.
• SOA is therefore suited to larger enterprise application environments.
• Another significant difference is how both architectures communicate. Every service in SOA communicates through an ESB. If this ESB fails, it compromises functionality across all services.
• On the other hand, services within a microservice are entirely independent. If one fails, the rest of the services remain functional. Overall, Microservices are more error tolerant.
• Today SOA applications are uncommon as it's an older architecture that may not be suitable for modern cloud-based applications. 
• However, microservices were developed for the cloud-native movement, and most developers prefer the versatility of service independence they offer.

Original article source at: https://www.c-sharpcorner.com/

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