Java microservices

Java microservices help developers build and ship applications faster, improve scalability and security, and adapt quickly to changing business needs.

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What are microservices?

Microservices are an architectural approach to building applications that are distributed and loosely coupled so that a change in one microservice won’t break the entire app. This lets development teams rapidly build new application components to meet changing business needs.

A microservice consists of a single deployment, isolated from other deployments and processes, that supports a specific business function. A collection of services constitutes a distributed system, where services consume and produce data for one another in the cloud.

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Benefits of microservices

Agile

Agile

Development cycles are shortened due to the singular focus of each service, so a microservices architecture supports more agile deployment and updates.
Resilient

Resilient

Independent services, when constructed properly, do not impact one another. This means that if one piece fails, the whole application doesn’t go down.
Decoupled

Decoupled

When a large application is broken down into smaller pieces, developers can more easily update it. This results in faster development cycles, especially when combined with agile development methodologies.
Scalable

Scalable

As demand for certain services increases, you can deploy across multiple servers and infrastructures to meet your needs.
Easily deployed

Easily deployed

Deployments are much simpler as a result of having fewer moving parts than traditional monolithic apps. It typically requires more coordination (a service mesh layer can help with that), but the payoffs can be huge.
Open

Open

Due to the use of polyglot APIs, you have the freedom to choose the best language and technology to solve your business challenges.

Introduction to microservices

Get started

Quick start

Get started building Kubernetes-native microservices with Quarkus.

Start quick start

Quarkus superheroes sample app

Learn how to develop and test a set of real-world applications that utilize a microservices pattern. This blog post will guide you through the application.

Repo

Develop and deploy microservices on Kubernetes

Utilize the Red Hat Developer Sandbox to develop and deploy Quarkus applications on Kubernetes (OpenShift).

Quick starts on OpenShift

Learn more

Modernizing monoliths

Java workloads have historically relied on monolithic architecture, which require significant overhead to support and manage over time. Modernizing these applications for the cloud provides an opportunity to drive additional value from these apps.

Monolith to Microservices: how applications evolve

Observability

Microservices are distributed, and your business logic is spread across these services; hence, observability is of paramount importance. With observability, you can monitor applications, measure key performance indicators, trace business calls across services, and much more.

Cheat sheet

Security

Secure your microservices architecture from external and internal threats by integrating with identity providers and authorization servers, adding user and token federation, and creating services that use multi-factor authentication.

Take the secure coding tutorial

Performance

Introduce high- speed data access to your microservice with caching. Embedded, distributed and shared across all services, secure or distributed across sites.

Learn how to cache across multiple clouds

Automation

GitOps is an evolution in Infrastructure as Code (IaC) that uses Git as the version control system for infrastructure configurations. Define events that trigger CI/CD pipelines, create smart workflows and applications configs, and more.

Self paced learning

Additional resources

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Modernizing Enterprise Java

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Quarkus Cookbook

Get involved

Learn, interact, and contribute to the open source microservices community.

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