“Tech Preview”: A Look at Wildfly Swarm

The story of Wildfly Swarm, from a business perspective, is kind of a story of microservices. Microservices are small, isolated, and focused service applications; as an architecture, microservices is an approach that decomposes larger systems into those smaller, focused, isolated services. These services talk to each other through a shared, common API, but are otherwise independent in design and deployment. Microservices, then, are frequently aligned with DevOps – which uses small, agile teams to quickly develop and push software for continuous integration (of systems) and continuous delivery (of software).

But what is Wildfly Swarm, in that context.

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Intro to Microservices

An increasingly common buzzword in cloud computing is microservices. Like a lot of things associated with cloud technologies, a precise definition is difficult to find — and it can mean a lot of things to a lot of different people, depending on the context. Since this is a blog devoted to middleware issues, I want to define microservices within the context of that middle layer in computing, for application development.

A Definition

Microservices is an architectural approach for a software system. Meaning, it defines how individual services fit together and how those services are constructed (like, general constraints or best practices). What sets microservices apart from other architectural approaches is that it treats each service as a discrete and independent part of the architecture. That means that services themselves (within that system) have very clear definitions:

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