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Vert.x 4 examples

This repository contains a range of examples, so you can get up and running easily with Vert.x. 4

Vert.x 3 examples can be found here https://github.com/vert-x3/vertx-examples/tree/3.x

The examples

The examples demonstrate how to use all different bits of Vert.x including Vert.x core, Vert.x-Web and various other services and features.

Most of the examples have been written as verticles. For more information on verticles please consult the Vert.x core manual.

Using verticles allows you to scale and run your code from the command line more easily, but if you prefer the same code in the verticles can also be run embedded. It’s really up to you. Verticles are entirely optional in Vert.x.

Running the examples

Running in your IDE

Most of the Java examples can be run directly in your IDE.

We provide a main() method in most of the example classes which allows you to conveniently run them directly in your IDE.

Just right-click the main method or class in your IDE and run as…​ application (supported by all major IDEs).

Vert.x core examples

The Vert.x core examples contains a wide range of examples using just Vert.x Core.

Vert.x-Web examples

Vert.x-Web is a toolkit for building web applications using Vert.x

The Vert.x-Web examples contains a wide range of examples using Vert.x-Web

Vert.x Web Client examples

Vert.x Web Client that provides an easy-to-use web client for Vert.x.

The Vert.x Web Client examples contains a wide range of examples using the Vert.x Web Client

Vertx Unit examples

Vertx-Unit is a library for writing asynchronous tests. We include some examples of how to use this tool to test your Vert.x (or other asynchronous) applications.

The Vert.x Unit examples shows how to use Vert.x Unit.

Virtual Threads

The virtual-threads-examples module shows how to use Vert.x with virtual threads.

Vert.x JUnit 5 examples

The vertx-junit5 modules allow testing Vert.x asynchronous operations with JUnit 5.

Vert.x Opentracing examples

Vert.x Opentracing examples contains a wide range of examples using Vert.x Opentracing.

Vert.x Zipkin examples

Vert.x Zipkin examples contains a wide range of examples using Vert.x Zipkin.

RxJava examples

Vert.x for RxJava provides most of its APIs as RxJava, so you can use those if you prefer.

RxJava is a great choice when you want to perform complex operations on multiple asynchronous streams of data.

The Vert.x RxJava 2 examples contains a wide range of examples using Vert.x for RxJava 2 The Vert.x RxJava 3 examples contains a wide range of examples using Vert.x for RxJava 3

gRPC examples

The Vert.x gRPC Examples show how you can implement a gRPC service and invoke a gRPC service with Vert.x.

Kotlin examples

The Vert.x Kotlin Examples shows a few examples with Kotlin such a REST application, Kotlin coroutines and usage of KotlinTest.

Mail examples

The Vert.x Mail examples contains a few examples using Vert.x Mail

The mail examples show different ways to create the mail message and send it via tls, ssl etc. The examples either use localhost:25 to send a mail or use host mail.example.com. To actually run the examples you will have to change the mail server and the user credentials in the MailLogin example.

Service Proxy Examples

The Vert.x Service Proxy examples contains an example of service proxy usage. It depicts how a service provider can be implemented and how the published service can be consumed.

Spring Examples

The Vert.x Spring Examples shows how vert.x application can be integrated inside a Spring ecosystem.

Redis example

The Vert.x Redis Example shows how you can interact with Redis using the vert.x Redis client.

Mongo example

The Vert.x Mongo Example shows how you can interact with MongoDB using the vert.x Mongo client.

SQL client example

The Vert.x SQL Client Examples shows how you can interact PostgreSQL or MySQL Databases using the Reactive SQL client.

Kafka example

The Vert.x Kafka Examples shows how you can interact Kafka using the vert.x Kafka client.

MQTT example

The Vert.x MQTT Examples shows how you can write MQTT servers and clients using Vert.x MQTT.

Service Proxy Examples

The Vert.x Service Proxy examples contains an example of service proxy usage. It depicts how a service provider can be implemented and how the published service can be consumed.

JPMS examples

This JPMS examples shows how a simple Java (11) modular application using Vert.x as automatic modules.

HTTP/2 Showcase

This HTTP/2 Showcase application highlights the benefits of HTTP/2 when dealing with latency on the web.

Camel Bridge examples

The Vert.x Camel Bridge Examples show how you can use Apache Camel routes from the event bus.

Micrometer metrics examples

The Vert.x Micrometer metrics examples show how to collect Vert.x metrics with Micrometer and send them to backends such as Prometheus or InfluxDB.

GraphQL examples

The Vert.x Web GraphQL examples contain simple client/server GraphQL applications built with Vert.x Web GraphQL and the GraphQL-Java library.