https://github.com/macielti/echo-graalvm

A simple Telegram echo bot to experiment with GraalVM native-image and Clojure
https://github.com/macielti/echo-graalvm

clojure graalvm telegram-bot

Last synced: 3 months ago
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A simple Telegram echo bot to experiment with GraalVM native-image and Clojure

• Host: GitHub
• URL: https://github.com/macielti/echo-graalvm
• Owner: macielti
• License: other
• Created: 2025-01-18T18:28:00.000Z (4 months ago)
• Default Branch: main
• Last Pushed: 2025-02-02T15:25:01.000Z (4 months ago)
• Last Synced: 2025-02-02T16:26:39.004Z (4 months ago)
• Topics: clojure, graalvm, telegram-bot
• Language: Clojure
• Homepage: https://github.com/macielti/echo-graalvm
• Size: 182 KB
• Stars: 1
• Watchers: 1
• Forks: 0
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md
  • License: LICENSE

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README

        
![Compatible with GraalVM](https://img.shields.io/badge/compatible_with-GraalVM-green)

# Echo GraalVM

A simple Telegram bot that echoes messages back to the user.

The objective is to experiment with GraalVM while generating native-images from a Clojure application.

**Echoes only text messages**

## Usage

Local deployment:

1. Clone the repository

2. Rename the file `resources/config.edn.example` to `resources/config.edn`.

3. Fill the `resources/config.edn` file with your Telegram bot token.

4. Run the docker container: `docker compose up -d`

## Experiment Results

A simple Clojure application (a Telegram echo bot) deployed to a Docker container consuming less than 10 MiB of RAM.

To ensure a fairer comparison, I implemented 3 versions of Docker images:

- **echo-graalvm-distroless**: The version that uses `gcr.io/distroless/base:latest` as the base image.

- **echo-jvm**: The JVM-based version using `amazoncorretto:23` as the base image.

- **echo-graalvm**: The GraalVM-based version, also using `amazoncorretto:23` as the base image.

`docker stats` output:

![Docker Stats](doc/docker-stats.png)

## License

Copyright © 2025 Bruno do Nascimento Maciel

This program and the accompanying materials are made available under the

terms of the Eclipse Public License 2.0 which is available at

http://www.eclipse.org/legal/epl-2.0.

This Source Code may also be made available under the following Secondary

Licenses when the conditions for such availability set forth in the Eclipse

Public License, v. 2.0 are satisfied: GNU General Public License as published by

the Free Software Foundation, either version 2 of the License, or (at your

option) any later version, with the GNU Classpath Exception which is available

at https://www.gnu.org/software/classpath/license.html.