Guides - Latest

  • Getting Started

    • Be Guided Through First Application

      Discover how to create your first Quarkus application.

    • Getting Started with Reactive

      Learn more about developing reactive applications with Quarkus.

    • Building Native Executables

      Build native executables with GraalVM or Mandrel.

    • Using our Tooling

      Explore the Quarkus developer toolchain which makes Quarkus development so fast and enjoyable.

    • Quarkus Tools in your favorite IDE

      Learn more about Quarkus integrations in IDEs.

  • Core

    • Configuring Your Application

      Hardcoded values in your code is a no go (even if we all did it at some point ;-)). In this guide, we learn how to configure your application.

    • Configuration Reference

      Learn more about how to configure your Quarkus applications.

    • Mapping Configuration to Objects

      Group multiple configuration properties into an object.

    • Extending Configuration Support

      Extend and customize the Configuration.

    • YAML Configuration

      YAML as a Configuration Source.

    • All Configuration Properties

      List all the configuration properties per extensions

    • Application Initialization and Termination

      You often need to execute custom actions when the application starts and clean up everything when the application stops. This guide explains how to be notified when an application stops or starts.

      lifecycle event
    • Introduction to CDI

      Quarkus DI solution is based on the Contexts and Dependency Injection for Java 2.0 specification. This guide explains the basics of CDI.

      qualifier event interceptor observer arc
    • CDI Reference

      Go more in depth into the Quarkus implementation of CDI.

      arc
    • Mutiny, Reactive for Bare Mortals

      Learn more about how to develop reactive applications with Quarkus.

    • Testing Your Application

      This guide covers:

      • Testing in JVM mode
      • Testing in native mode
      • Injection of resources into tests
    • Continuous Testing

      Get early test feedback with Continuous Testing.

    • Automatic Service Setup with Dev Services

      A list of all extensions that support Dev Services and their configuration options.

    • Configuring Logging

      This guide explains logging and how to configure it.

    • Command Mode Reference

      This reference guide explains how to develop command line applications with Quarkus.

    • Context Propagation

      Learn more about how you can pass contextual information with SmallRye Context Propagation.

    • Using SSL With Native Executables

      In this guide, we will discuss how you can get your native executables to support SSL, as native executables don’t support it out of the box.

    • Base Runtime Image for Native Executables

      Learn more about the base runtime image used by Quarkus for native executables and how you can tweak it.

    • Compress Native Executables with UPX

      Learn how you can reduce the size of your native executables with UPX.

    • Writing Native Applications

      This guide is a collection of tips to help you solve the problems you encounter when compiling applications to native executable.

    • Native Reference

      Explore in more details how to debug native executables.

  • Web

    • Introduction to writing REST JSON Services

      JSON is now the lingua franca between microservices. In this guide, we see how you can get your REST services to consume and produce JSON payloads.

    • Writing REST Services Reference

      Discover how to develop highly scalable REST services with JAX-RS and RESTEasy Reactive.

    • Using the REST Client (including JSON)

      This guide explains how to use the RESTEasy Reactive REST Client.

    • Migrating from RESTEasy Classic to RESTEasy Reactive

      This guide explains how to migrate an application from RESTEasy Classic to RESTEasy Reactive.

    • Writing Simple REST CRUD Services

      Hibernate ORM REST Data with Panache simplifies the creation of CRUD applications based on JAX-RS and Hibernate ORM.

    • Validation with Hibernate Validator

      This guide covers how to use Hibernate Validator/Bean Validation in your REST services.

    • Using the REST Client with Multipart

      This guide explains how to use the RESTEasy REST Client to send multipart REST requests, typically to upload documents.

    • Using WebSockets

      This guide explains how your Quarkus application can utilize web sockets to create interactive web applications. Because it’s the canonical web socket application, we are going to create a simple chat application.

    • Using OpenAPI and Swagger UI

      This guide explains how to use the OpenAPI extension to generate an OpenAPI descriptor and get a Swagger UI frontend to test your REST endpoints.

    • Developing REST Services with RESTEasy Classic

      This guide explains how to use the RESTEasy REST Client in order to interact with REST APIs (JSON and other) with very little effort.

    • Using the RESTEasy Classic REST Client (including JSON)

      This guide explains how to use the RESTEasy REST Client in order to interact with REST APIs (JSON and other) with very little effort.

    • HTTP Reference Documentation

      Learn more about configuring Quarkus’ Vert.x based HTTP layer - and Undertow if you are using servlets.

    • Using Fault Tolerance

      This guide demonstrates how your Quarkus application can utilize the SmallRye Fault Tolerance specification through the SmallRye Fault Tolerance extension.

    • Using Reactive Routes

      This guide demonstrates how to use reactive routes.

    • Implementing GraphQL Services

      This guide explains how to leverage SmallRye GraphQL to implement GraphQL services.

    • Consuming GraphQL Services

      This guide explains how to leverage SmallRye GraphQL Client to consume GraphQL services.

  • Data

    • Configuring your datasources

      With Quarkus, you can easily configure a datasource, or several if need be.

    • Database Dev Services

      Automatically start database containers with Dev Services.

    • Using Hibernate ORM and JPA

      Hibernate ORM is the de facto JPA implementation and offers you the full breath of an Object Relational Mapper. It works beautifully in Quarkus.

    • Simplified Hibernate ORM with Panache

      Hibernate ORM is the de facto JPA implementation and offers you the full breadth of an Object Relational Mapper.

      It makes complex mappings possible, but it does not make simple and common mappings trivial.

      Panache focuses on making your entities trivial and fun to write.

    • Simplified Hibernate ORM with Panache and Kotlin

      This explain the specifics of using Hibernate ORM with Panache in a Kotlin project.

    • Hibernate Search + Elasticsearch

      Hibernate Search allows you to index your entities in an Elasticsearch cluster and easily offer full text search in all your Hibernate ORM-based applications.

    • Using Transactions

      Quarkus comes with a Transaction Manager and uses it to coordinate and expose transactions to your applications. Each extension dealing with persistence will integrate with it for you. And you will explicitly interact with transactions via CDI. This guide will walk you through all that.

    • Using Blaze-Persistence

      This guide explains how to use Blaze-Persistence to simplify your data and DTO layers.

    • Validation with Hibernate Validator

      This guide covers how to use Hibernate Validator/Bean Validation in your REST services.

    • Cache your application data

      This guide explains how to cache expensive method calls of your CDI beans using simple annotations.

    • Schema Migration with Flyway

      This guide covers how to use the Flyway extension to manage your schema migrations.

    • Schema Migration with Liquibase

      This guide covers how to use the Liquibase extension to manage your schema migrations.

    • Reactive SQL Clients

      This guide covers how to use the Reactive SQL Clients in Quarkus.

    • Using Hibernate Reactive

      Reactive API for Hibernate ORM

    • Simplified Hibernate Reactive with Panache

      Simplified reactive ORM layer based on Hibernate Reactive.

    • Using Infinispan Client

      Infinispan is an in memory data grid that allows running in a server outside of application processes. This extension provides functionality to allow the client that can connect to said server when running in Quarkus.

    • Elasticsearch Clients

      This guide covers how to use an Elasticsearch cluster using the low level or high level REST clients.

    • Elasticsearch Dev Services

      Start Elasticsearch automatically in dev and test modes.

    • MongoDB Client

      This guide covers how to use MongoDB in Quarkus.

    • Liquibase MongoDB

      Manage your MongoDB schema migrations with Liquibase.

    • MongoDB with Panache

      This guide covers the usage of MongoDB using active records and repositories.

    • MongoDB with Panache and Kotlin

      This guide covers the usage of MongoDB using active records and repositories in a Kotlin project.

    • Redis Client

      This guide covers how to use a Redis datastore in Quarkus.

    • Redis Reference

      Learn how to customize the Redis client to your needs.

    • Redis Dev Services

      Start Redis automatically in dev and test modes.

    • Neo4j Client

      This guide covers how to use the Neo4j graph database in Quarkus.

      Quarkiverse Hub
    • Apache Cassandra Client

      This guide covers how to use the Apache Cassandra NoSQL database in Quarkus.

    • Amazon DynamoDB

      This guide covers how to use the Amazon DynamoDB database in Quarkus.

      Quarkiverse Hub
    • Amazon S3

      This guide covers how to use the Amazon S3 cloud storage in Quarkus.

      Quarkiverse Hub
    • Google Cloud BigQuery

      This guide covers how to use GCP BigQuery in Quarkus.

      Quarkiverse Hub
    • Google Cloud Bigtable

      This guide covers how to use GCP Bigtable in Quarkus.

      Quarkiverse Hub
    • Google Cloud Firestore

      This guide covers how to use GCP Firestore in Quarkus.

      Quarkiverse Hub
    • Google Cloud Spanner

      This guide covers how to use GCP Spanner in Quarkus.

      Quarkiverse Hub
    • Google Cloud Storage

      This guide covers how to use GCP Storage in Quarkus.

      Quarkiverse Hub
    • Using Software Transactional Memory

      This guides covers the usage of Software Transactional Memory (STM).

    • Using LRA (Long Running Actions)

      This guides covers the usage of LRA to coordinate activities across services.

  • Messaging

    • Getting Started to SmallRye Reactive Messaging with Apache Kafka

      This guide demonstrates how your Quarkus application can utilize SmallRye Reactive Messaging to interact with Apache Kafka.

    • Apache Kafka Reference Guide

      This reference guide provides an in-depth look on Apache Kafka and Smallrye Reactive Messaging framework.

    • Apache Kafka Dev Services

      Start Apache Kafka automatically in dev and test modes.

    • Using Apache Kafka with Schema Registry and Avro

      Use Apache Kafka, Avro serialized records, and connect to a schema registry.

    • Apicurio Registry Dev Services

      Start Apicurio Registry automatically in dev and test modes.

    • Using AMQP with Reactive Messaging

      This guide demonstrates how your Quarkus application can utilize SmallRye Reactive Messaging to interact with AMQP.

    • AMQP Reference

      Reference guide for SmallRye Reactive Messaging and AMQP.

    • AMQP Dev Services

      Start AMQP automatically in dev and test modes.

    • Using RabbitMQ with Reactive Messaging

      This guide demonstrates how your Quarkus application can utilize SmallRye Reactive Messaging to interact with RabbitMQ.

    • RabbitMQ Reference

      Reference guide for SmallRye Reactive Messaging and RabbitMQ.

    • RabbitMQ Dev Services

      Start RabbitMQ automatically in dev and test modes.

    • Using HTTP with Reactive Messaging

      This guide demonstrates how your Quarkus application can utilize SmallRye Reactive Messaging to consume and produce HTTP messages.

      Quarkiverse Hub
    • Using WebSockets with Reactive Messaging

      This guide demonstrates how your Quarkus application can utilize SmallRye Reactive Messaging to consume and produce messages via WebSockets.

      Quarkiverse Hub
    • Using Apache Kafka Streams

      This guide demonstrates how your Quarkus application can utilize the Apache Kafka Streams API to implement stream processing applications based on Apache Kafka.

    • Using the event bus

      This guide explains how different beans can interact using the event bus.

    • Using JMS

      This guide demonstrates how your Quarkus application can use JMS messaging with AMQP 1.0 using Apache Qpid JMS, or using Apache ActiveMQ Artemis JMS.

    • Google Cloud PubSub

      This guide covers how to use GCP PubSub in Quarkus.

      Quarkiverse Hub
  • Security

    • Security Overview

      This guide is the entry point for everything security in Quarkus.

      security
    • Security with Basic authentication and JPA

      This guide demonstrates how to get started with Quarkus security using Basic authentication and a database to store your user identities with Hibernate ORM.

    • Authorization of Web Endpoints

      Secure your web endpoints with authorizations.

      security
    • Built-In Authentication Support

      Learn more about how Quarkus handles authentication.

      security
    • Security Customization

      Customize Quarkus’ security layer behavior.

      security
    • Security Testing

      Test the security of your Quarkus applications.

      security
    • Using Security with .properties File

      This guide demonstrates how your Quarkus application can use a .properties file to store your user identities.

      security
    • Using Security with JDBC

      This guide demonstrates how your Quarkus application can use a database to store your user identities.

      security
    • Using Security with LDAP

      This guide demonstrates how your Quarkus application can use a LDAP directory to store your user identities.

      security
    • Using OpenID Connect (OIDC) to Protect Service Applications

      This guide demonstrates how to use the OpenID Connect extension to protect your Quarkus JAX-RS service application using Bearer Token Authorization where the tokens are issued by OpenID Connect Providers such as Keycloak.

      sso,jwt,security
    • Using OpenID Connect (OIDC) to Protect Web Applications

      This guide demonstrates how to use the OpenID Connect extension to protect your Quarkus JAX-RS web application using the Authorization Code Flow and OpenID Connect Providers such as Keycloak.

      sso,security
    • Using OpenID Connect (OIDC) Multi-Tenancy

      This guide demonstrates how your OpenID Connect application can support multi-tenancy so that you can serve multiple tenants from a single application.

      sso,security
    • Using OpenID Connect (OIDC) and Keycloak to Centralize Authorizations

      This guide demonstrates how your Quarkus application can authorize access to protected resources using Keycloak Authorization Services.

      sso,security
    • Using OpenID Connect (OIDC) and OAuth2 Client and Filters

      This guide explains how to use OpenID Connect and OAuth2 Client and Filters to acquire, refresh and propagate access tokens.

      sso,security
    • OpenID Connect (OIDC) and OAuth2 Client and Filters Reference

      Reference guide for OpenID Connect and OAuth2 Client and Filters.

      sso,security
    • Configuring Well-Known OpenID Connect (OIDC) Providers

      This guide explains how to configure Quarkus to authenticate against well-known OpenID Connect providers such as GitHub, Google, Microsoft, Apple…

      sso,security
    • OpenID Connect (OIDC) Dev Services

      Start Keycloak or other providers automatically in dev and test modes.

      security
    • Keycloak Admin Client

      Inject a preconfigured Keycloak Admin Client.

      security
    • Using JWT RBAC

      This guide explains how your application can utilize SmallRye JWT to verify JWT tokens and provide secured access to the JAX-RS endpoints.

      security
    • Build, Sign and Encrypt JSON Web Tokens (JWT)

      This guide explains how your application can build, sign and/or encrypt JWT tokens with a fluent and configurable SmallRye JWT Build API.

      jwt,security
    • Using OAuth2 RBAC

      This guide explains how your Quarkus application can utilize OAuth2 tokens to provide secured access to the JAX-RS endpoints.

      security
    • Using Vault

      This guide explains how you can use HashiCorp Vault to securely store your credentials in Quarkus.

      security
      Quarkiverse Hub
    • Using Vault Transit Secret Engine

      This guide explains how you can use HashiCorp Vault for “encryption as a service”.

      security
      Quarkiverse Hub
    • Using HashiCorp Vault with Databases

      Keep confidential your database credentials by storing them in Vault.

      security
      Quarkiverse Hub
    • Working with HashiCorp Vault’s Authentication

      This guide explains the various methods supported by Quarkus to authenticate to your Vault.

      security
      Quarkiverse Hub
    • Using HashiCorp Vault’s PKI Secret Engine

      Generate X.509 certificates with Vault’s PKI Secret Engine.

      security
      Quarkiverse Hub
    • Credentials Provider

      This guides explains how to use the Vault credentials provider or implement your own custom one.

      security
    • Using Security with WebAuthn

      This guide demonstrates how your Quarkus application can use WebAuthn authentication instead of passwords.

      security,webauthn
    • Cross Site Request Forgery (CSRF) prevention

      This guide demonstrates how to add a RESTEasy Reactive filter to help prevent CSRF attacks.

      security,csrf
  • Business Automation

    • Using Kogito to add business automation capabilities to an application

      This guide demonstrates how your Quarkus application can use Kogito to add business automation to power it up with business processes and rules.

    • Using Kogito DMN support to add decision automation capabilities to an application

      Use Kogito to add business automation and power it up with DMN decision support.

    • Using Kogito to add rule engine capabilities to an application

      Use Kogito to add DRL files with rules.

    • Using Kogito to add prediction capabilities to an application

      Use Kogito to add business automation to power it up with predictions.

    • Kogito Dev Services

      Start Kogito automatically in dev and test modes.

    • Using AI to optimize a schedule with OptaPlanner

      This guide walks you through the process of creating a Quarkus application with OptaPlanner’s constraint solving Artificial Intelligence (AI).

  • Integration

    • Apache Camel

      This guide covers the systems integration with Apache Camel

  • Command Line Applications

    • Command Mode Reference

      This reference guide explains how to develop command line applications with Quarkus.

    • Picocli

      Simplify command line applications creation with the Picocli extension.

    • jbang Integration

      Easy Quarkus-based scripting with jbang.

  • Cloud

    • Service discovery and load balancing with Stork

      Learn how to use SmallRye Stork for service discovery and load balacing.

    • Using Stork with Kubernetes

      Learn how to use SmallRye Stork in a Kubernetes environment.

    • Stork Reference

      Have a more in-depth look at how SmallRye Stork can be configured and used.

    • Build Container Images

      Learn how to build and push container images with Jib, S2I or Docker as part of the Quarkus build.

    • Using Podman

      Use Podman instead of Docker for running containers.

    • Deploying Quarkus Applications on Kubernetes

      This guide covers how to deploy a native application on Kubernetes.

    • Deploying Quarkus Applications on OpenShift

      This guide covers how to deploy a native application on OpenShift.

    • Consuming Kubernetes ConfigMaps

      Use ConfigMaps as a configuration source for your Quarkus applications.

    • Using the Kubernetes Client to Interact with a Kubernetes Cluster

      This guide demonstrates how to use the Fabric8 Kubernetes client to interact with your Kubernetes cluster.

    • Deploying to Microsoft Azure Cloud

      This guide explains how to deploy a Quarkus application to Microsoft Azure Cloud.

    • Azure Functions (Serverless) with Vert.x Web, Servlet, or RESTEasy

      This guide explains how you can deploy Vert.x Web, Servlet, or RESTEasy microservices as an Azure Function.

    • Amazon Lambda

      This guide explains how you can deploy Quarkus-based Amazon Lambdas.

    • Amazon Lambda with Vert.x Web, Servlet, or RESTEasy

      This guide explains how you can deploy Vert.x Web, Servlet, or RESTEasy microservices as an Amazon Lambda.

    • Deploying to Google Cloud

      This guide explains how to deploy a Quarkus application to Google Cloud.

    • Google Cloud Functions

      This guide explains how you can deploy Quarkus-based Google Cloud Functions.

    • Google Cloud Functions with Vert.x Web, Servlet, or RESTEasy

      This guide explains how you can deploy Vert.x Web, Servlet, or RESTEasy microservices as a Google Cloud Function.

    • Deploying to Heroku

      Deploy your Quarkus applications on Heroku.

    • Quarkus Funqy

      This guide explains basics of the Funqy framework, a simple portable cross-provider cloud function API.

    • Quarkus Funqy HTTP

      This guide explains Funqy’s HTTP binding.

    • Quarkus Funqy Amazon Lambdas

      This guide explains Funqy’s Amazon Lambda binding.

    • Quarkus Funqy Amazon Lambdas HTTP

      This guide explains Funqy’s Amazon Lambda HTTP binding.

    • Quarkus Funqy Knative Events

      This guide explains Funqy’s Knative Events binding.

    • Quarkus Funqy Azure Functions HTTP

      This guide explains Funqy’s Azure Functions HTTP binding.

    • Quarkus Funqy Google Cloud Platform

      This guide explains Funqy’s Google Cloud Platform Functions binding.

    • Quarkus Funqy Google Cloud Platform HTTP

      This guide explains Funqy’s Google Cloud Platform Functions HTTP binding.

    • Amazon DynamoDB

      This guide covers how to use the Amazon DynamoDB database in Quarkus.

      Quarkiverse Hub
    • Amazon KMS

      This guide covers how to use the Amazon Key Management Service in Quarkus.

      Quarkiverse Hub
    • Amazon IAM

      This guide covers how to use the Amazon Identity and Access Management in Quarkus.

      Quarkiverse Hub
    • Amazon S3

      This guide covers how to use the Amazon S3 cloud storage in Quarkus.

      Quarkiverse Hub
    • Amazon SES

      This guide covers how to use the Amazon Simple Email Service in Quarkus.

      Quarkiverse Hub
    • Amazon SNS

      This guide covers how to use the Amazon Simple Notification Service in Quarkus.

      Quarkiverse Hub
    • Amazon SQS

      This guide covers how to use the Amazon Simple Queue Service in Quarkus.

      Quarkiverse Hub
    • Amazon SSM

      This guide covers how to use the AWS Systems Manager in Quarkus.

      Quarkiverse Hub
    • Access Google Cloud services

      This guide covers how to use multiple GCP services.

      Quarkiverse Hub
  • Observability

    • Using Health Check

      This guide demonstrates how your Quarkus application can utilize the SmallRye Health extension.

    • Using OpenTelemetry

      This guide explains how your Quarkus application can utilize OpenTelemetry to provide distributed tracing for interactive web applications.

    • Using OpenTracing

      This guide explains how your Quarkus application can utilize OpenTracing to provide distributed tracing for interactive web applications.

    • Collecting Metrics with Micrometer

      This guide demonstrates how your Quarkus application can collect metrics using the Micrometer extension.

    • Collecting Metrics with SmallRye Metrics

      This guide demonstrates how your Quarkus application can utilize the SmallRye Metrics extension.

    • Using Fault Tolerance

      This guide demonstrates how your Quarkus application can utilize the SmallRye Fault Tolerance extension.

    • Using Sentry to Monitor your Logs

      This guide explains how to use Sentry to monitor your application and be notified when exceptions occur.

      Quarkiverse Hub
    • Centralized Log Management

      This guide explains how to centralize your logs with Logstash or Fluentd using the Graylog Extended Log Format (GELF).

  • Serialization

    • Writing REST JSON Services

      JSON is now the lingua franca between microservices. In this guide, we see how you can get your REST services to consume and produce JSON payloads.

    • gRPC

      Entry point for everything gRPC.

    • Getting Started with gRPC

      This guide explains how to start using gRPC in your Quarkus application.

    • Implementing gRPC Services

      This guide explains how to implement gRPC services in your Quarkus application.

    • Consuming gRPC Services

      This guide explains how to consume gRPC services in your Quarkus application.

  • Tooling

    • Using the Quarkus CLI

      Use the Quarkus CLI to create, build, run, and manage extensions for Quarkus projects.

      cli
    • Building Applications with Maven

      This guide covers:

      • Maven configuration
      • Creating a new project
      • Dealing with extensions
      • Development mode
      • Debugging
      • Import in your IDE
      • Building a native executable
      • Build a container friendly executable
    • Building Applications with Gradle

      This guide covers:

      • Gradle configuration
      • Creating a new project
      • Dealing with extensions
      • Development mode
      • Debugging
      • Import in your IDE
      • Building a native executable
      • Build a container friendly executable
    • Releasing your Quarkus applications with JReleaser

      Discover how you can streamline the release process of your Quarkus applications with JReleaser.

    • Measuring the coverage of your tests

      This guide explains how to measure the test coverage of your Quarkus application.

    • Re-augment a Quarkus Application

      Use mutable jars to rebuild your application with different build time configurations.

  • Compatibility

    • Using the Quarkus Extension for Spring DI API

      While you are encouraged to use CDI annotations for injection, Quarkus provides a compatibility layer for Spring dependency injection in the form of the spring-di extension.

    • Using the Quarkus Extension for Spring Web API

      While you are encouraged to use JAX-RS annotations for defining REST endpoints, Quarkus provides a compatibility layer for Spring Web in the form of the spring-web extension.

    • Using the Quarkus Extension for Spring Data JPA API

      While you are encouraged to use Hibernate ORM with Panache for your data layer, Quarkus provides a compatibility layer for Spring Data JPA in the form of the spring-data-jpa extension.

    • Writing Simple CRUD Applications with Spring Data

      Spring Data REST simplifies the creation of CRUD applications based on our Spring Data compatibility layer.

    • Using the Quarkus Extension for Spring Security API

      While you are encouraged to use the Quarkus security layer to secure your applications, Quarkus provides a compatibility layer for Spring Security in the form of the spring-security extension.

    • Using the Quarkus Extension for Spring Cache

      While you are encouraged to use the Cache extension for your application-level caching, Quarkus provides a compatibility layer for Spring Cache in the form of the spring-cache extension.

    • Using the Quarkus Extension for Spring Scheduled

      While you are encouraged to use the Scheduler or Quartz extensions to schedule tasks, Quarkus provides a compatibility layer for Spring Scheduled in the form of the spring-scheduled extension.

    • Using Spring Boot's ConfigurationProperties

      Use Spring Boot’s @ConfigurationProperties in place of MicroProfile Config annotations

    • Using the Quarkus Extension for Spring Cloud Config

      Quarkus provides a compatibility layer for Spring Cloud Config in the form of the spring-cloud-config-client extension.

  • Miscellaneous

    • Scheduling Periodic Tasks

      Modern applications often need to run specific tasks periodically. In this guide, you learn how to schedule periodic tasks.

    • Scheduler Reference

      Learn more about the Scheduler extension.

    • Scheduling Clustered Tasks with Quartz

      You need clustering support for your scheduled tasks? This guide explains how to use the Quartz extension for that.

    • Sending Emails using SMTP

      Learn more about how you can send email from a Quarkus application with our reactive email client.

    • Mailer Reference Guide

      This reference guide explains in more details the configuration and usage of the Quarkus Mailer.

    • Templating with Qute

      Learn more about how you can use templating in your applications with the Qute template engine.

    • Qute Reference Guide

      Learn everything you need to know about the Qute template engine.

    • Extracting Content with Apache Tika

      Learn more about how you extract content from documents using the Apache Tika toolkit.

      Quarkiverse Hub
    • Using Vert.x

      This guide explains how to use Vert.x in Quarkus to build reactive applications.

    • Vert.x Reference Guide

      This reference guide provides advanced details about the usage and the configuration of the Vert.x instance used by Quarkus.

    • Access Git repositories with JGit

      This guide explains how you can access Git repositories with JGit.

      Quarkiverse Hub
    • Consume Configuration from Consul

      This guide explains how your Quarkus application can read configuration properties at runtime from Consul.

      Quarkiverse Hub
    • Measuring Performance

      This guide explains how to best measure the footprint of a Quarkus application.

    • Consume Configuration from Google Cloud Secret Manager

      This guide covers how to use GCP Secret Manager in Quarkus to consume configuration properties directly or via your application.properties.

      Quarkiverse Hub
  • Alternative Languages

    • Using Kotlin

      This guide explains how to use Kotlin.

    • Simplified Hibernate ORM with Panache and Kotlin

      This explain the specifics of using Hibernate ORM with Panache in a Kotlin project.

    • MongoDB with Panache and Kotlin

      This guide covers the usage of MongoDB using active records and repositories in a Kotlin project.

  • Writing Extensions

    • Building My First Extension

      Learn step by step how to build a simple extension.

    • CDI Integration

      Learn how to integrate your extension with Quarkus’ CDI container.

    • Contributing to Dev UI

      Learn how to get your extension contribute features to the Dev UI.

    • All BuildItems

      Explore all the BuildItems you can consume/produce in your extensions.

    • Capabilities

      How capabilities are implemented and used in Quarkus.

    • Extension metadata

      Learn more about Quarkus extensions metadata

    • Conditional Extension Dependencies

      Trigger the inclusion on additional extensions based on certain conditions.

    • Writing Your Own Extension

      Quarkus extensions optimize your applications by pushing as much work as possible to the build operation. This guide explains the rationale of Quarkus extensions and guides you through authoring your own extensions.

    • Writing a Codestart for an extension

      Provide users with initial code for extensions when generating Quarkus applications on code.quarkus.io and all the Quarkus tooling. This guide explains how to create and configure a Codestart for an extension.

    • Writing Native Applications

      This guide is a collection of tips to help you solve the problems you encounter when compiling applications to native executable.

  • Architecture

    • Quarkus Reactive Architecture

      Learn more about Quarkus reactive architecture.

    • Virtual Threads support

      Learn how to benefit from Java 19 virtual threads when writing REST services in Quarkus.

    • Class Loading Reference

      Learn more about Quarkus class loading infrastructure.

    • Understanding the Platform concept

      Learn more about what we call a Platform in the Quarkus world.

    • Quarkus Extension Registry

      Learn more about the notion of extension registry and how you can use your own.

    • Dev Mode Differences

      How dev mode differs from a production application

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