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Ports and Adapters Pattern (Hexagonal Architecture)

The main idea of Ports & Adapters is to define the structure of an application so that it could be run by different kinds of clients (humans, tests cases, other applications, …), and it could be tested in isolation from external devices of the real world that the application depends on (databases, servers, other applications, …).

jmgarridopaz.github.io

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Building Microservices: A Reactive Framework Comparison

Most of us have heard the buzz about microservices and their benefits. In a previous post, I discussed microservices and when it may make sense to orchestrate vs. react when implementing them. If you choose to react, there are a number of options available. Reactive programming is a hot topic right now as both Java 9 and Spring Framework 5 were recently released and have reactive capabilities built in. There are many additional options for reactive programming depending on your use case.

Medium.com

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The evolution of scalable microservices

In this article, we will look at microservices, not as a tool to scale the organization, development and release process (even though it’s one of the main reasons for adopting microservices), but from an architecture and design perspective, and put it in its true context: distributed systems. In particular, we will discuss how to leverage Events-first Domain Driven Design and Reactive principles to build scalable microservices, working our way through the evolution of a scalable microservices-based system.

OReilly.com

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Reactive Programming with Spring Reactor

It has been around for 30-40 years and boils down to Event-Driven Programming What is new is “reactive motion bound to specification”, this means that reactive programming is based on something solid, a specification and no longer some functional concepts. Namely the Reactive Manifesto.

ordina-jworks.github.io

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Docker For Beginners

Learn to build and deploy your distributed applications easily to the cloud with Docker

https://docker-curriculum.com/

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Learn Kubernetes Basics

This tutorial provides a walkthrough of the basics of the Kubernetes cluster orchestration system. Each module contains some background information on major Kubernetes features and concepts, and includes an interactive online tutorial. These interactive tutorials let you manage a simple cluster and its containerized applications for yourself.

kubernetes.io

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Cloud Computing Patterns

Patterns are a widely used concept in computer science to describe good solutions to reoccurring problems in an abstract form. Such conceptual solutions can then be applied in concrete use cases regardless of used technologies, such as software, middleware, or programming languages. Cloud computing fundamentals describe cloud service models and cloud deployment types analogous to the NIST cloud definition. These patterns extend this definition by covering the conditions under which a certain service model and deployment type should be used for a cloud application.

www.cloudcomputingpatterns.org

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Distributed Systems for fun & profit

In this text I've tried to provide a more accessible introduction to distributed systems. To me, that means two things: introducing the key concepts that you will need in order to have a good time reading more serious texts, and providing a narrative that covers things in enough detail that you get a gist of what's going on without getting stuck on details. It's 2013, you've got the Internet, and you can selectively read more about the topics you find most interesting.

book.mixu.ne

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Spring Cloud

Spring Cloud provides tools for developers to quickly build some of the common patterns in distributed systems (e.g. configuration management, service discovery, circuit breakers, intelligent routing, micro-proxy, control bus, one-time tokens, global locks, leadership election, distributed sessions, cluster state). Coordination of distributed systems leads to boiler plate patterns, and using Spring Cloud developers can quickly stand up services and applications that implement those patterns. They will work well in any distributed environment, including the developer’s own laptop, bare metal data centres, and managed platforms such as Cloud Foundry.

spring.io

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Solving distributed data management problems in a microservice architecture

Microservices accelerate development and enable businesses to innovate faster and stay ahead of the competition. But one major challenge with the microservices architecture is the management of distributed data. Each microservice has its own private database. It is difficult to implement business transactions that maintain data consistency across multiple services as well as queries that retrieve data from multiple services.

eventuate.io

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Real-time communication for the web

With WebRTC, you can add real-time communication capabilities to your application that works on top of an open standard. It supports video, voice, and generic data to be sent between peers, allowing developers to build powerful voice- and video-communication solutions. The technology is available on all modern browsers as well as on native clients for all major platforms. The technologies behind WebRTC are implemented as an open web standard and available as regular JavaScript APIs in all major browsers. For native clients, like Android and iOS applications, a library is available that provides the same functionality. The WebRTC project is open-source and supported by Apple, Google, Microsoft and Mozilla, amongst others.

webrtc.org