https://github.com/diogok/klj-api

Demo Clojure API
https://github.com/diogok/klj-api

clojure docker graalvm native-image

Last synced: about 1 month ago
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Demo Clojure API

• Host: GitHub
• URL: https://github.com/diogok/klj-api
• Owner: diogok
• Created: 2019-07-30T12:49:40.000Z (over 5 years ago)
• Default Branch: master
• Last Pushed: 2020-05-24T09:08:54.000Z (over 4 years ago)
• Last Synced: 2025-01-10T00:08:32.292Z (about 1 month ago)
• Topics: clojure, docker, graalvm, native-image
• Language: Clojure
• Size: 43 KB
• Stars: 4
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# Demo Clojure Server project

Just to keep up to date with current frameworks.

## Dependencies

- [Clojure deps tools](https://clojure.org/guides/deps_and_cli)

## Featuring

- Clojure 1.10

- Dockerfile with multistage build

- Dockerfile with with native-image using graalvm

The docker image use openjdk 14 with ZGC for low latency GC set to 85% of RAM available to the container.

The native docker image uses graalvm with Java 11, and has minimal size.

### Native using GraalVM

A few notes on non production or limited environments:

- Java docker image comes at 430MB and native image at 23MB

- Initial memory usage of java is at 150MB while native is at 3MB

- After load memory usage was similar, with native usig about 10% more memory

- Under load, the java version handler more requests

- The benchmark was very limited

- Tracing is not working on native

### Utils

- environ for config

- clojure.logging using log4j

- prometheus metrics

- opentracing with jaeger, zipking or log

### HTTP

- Ring

- jetty (http)

- reitit for routing

- cheshire for json

### Environment configurations:

TODO

## Tasks

`clj repl` start a generic REPL

`clj -A:jar` to create a jar

`clj -A:uberjar` uberjar standalone

`clj run` start the server with autoreload

`docker build -f Dockerfile -t diogok/klj-api .` to build docker image

`docker build -f Dockerfile.native -t diogok/klj-api:native .` to build graalvm native docker image

## License

MIT