https://github.com/mp911de/spring-boot-virtual-threads-experiment

Project Loom Experiment using Spring Boot, Spring WebMVC, and Postgres
https://github.com/mp911de/spring-boot-virtual-threads-experiment

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Project Loom Experiment using Spring Boot, Spring WebMVC, and Postgres

• Host: GitHub
• URL: https://github.com/mp911de/spring-boot-virtual-threads-experiment
• Owner: mp911de
• Created: 2020-09-25T12:29:34.000Z (about 4 years ago)
• Default Branch: main
• Last Pushed: 2022-08-04T08:21:09.000Z (over 2 years ago)
• Last Synced: 2024-10-23T07:52:40.616Z (16 days ago)
• Language: Java
• Size: 794 KB
• Stars: 115
• Watchers: 9
• Forks: 15
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
Project Loom Experiment using Spring Boot, Spring WebMVC, and Postgres

======================================================================

This repository contains an experiment that uses a Spring Boot application with [Virtual Threads](https://wiki.openjdk.java.net/display/loom/Main).

Involved components:

* Spring Framework 6.0 M5

* Spring Boot 3.0 M4

* Apache Tomcat 10.1.0 M17

* HikariCP 5.0.1 (Loom issue: https://github.com/brettwooldridge/HikariCP/issues/1463)

* PGJDBC 42.4.0 (PR that turns `synchronized` into Loom-friendly Locks: https://github.com/pgjdbc/pgjdbc/issues/1951)

 

This experiment evolves incrementally, find the previous state at https://github.com/mp911de/spring-boot-virtual-threads-experiment/tree/boot-2.4. 

You need Java 19 (EAP) with `--enable-preview` to run the example. 

Customization of a vanilla Spring Boot with Tomcat application:

                                                              

```java

@Bean

AsyncTaskExecutor applicationTaskExecutor() {

    // enable async servlet support

    ExecutorService executorService = Executors.newVirtualThreadPerTaskExecutor();

    return new TaskExecutorAdapter(executorService::execute);

}

@Bean

TomcatProtocolHandlerCustomizer> protocolHandlerVirtualThreadExecutorCustomizer() {

    return protocolHandler -> {

        protocolHandler.setExecutor(Executors.newVirtualThreadPerTaskExecutor());

    };

}

```

After starting the application, run `GET http://localhpst:8080/where-am-i` to verify you're running on a virtual thread:

```

$ http :8080/where-am-i                                      

HTTP/1.1 200 

Connection: keep-alive

Content-Length: 51

Content-Type: text/plain;charset=UTF-8

Date: Wed, 27 Jul 2022 09:34:23 GMT

Keep-Alive: timeout=60

VirtualThread[#82]/runnable@ForkJoinPool-1-worker-1

```

License

-------

* [Apache License 2.0](https://www.apache.org/licenses/LICENSE-2.0)