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commafeed/README.md

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# CommaFeed
Google Reader inspired self-hosted RSS reader, based on Dropwizard and React/TypeScript.
![preview](https://user-images.githubusercontent.com/1256795/184886828-1973f148-58a9-4c6d-9587-ee5e5d3cc2cb.png)
## Features
- 4 different layouts
- Light/Dark theme
- Fully responsive
- Keyboard shortcuts for almost everything
- Support for right-to-left feeds
- Translated in 25+ languages
- Supports thousands of users and millions of feeds
- OPML import/export
- REST API and a Fever-compatible API for native mobile apps
- [Browser extension](https://github.com/Athou/commafeed-browser-extension)
## Deployment
### Docker
Docker is the easiest way to get started with CommaFeed.
Docker images are built automatically and are available at https://hub.docker.com/r/athou/commafeed
### Cloud hosting
[PikaPods](https://www.pikapods.com) offers 1-click cloud hosting solutions starting at $1/month with a free $5
welcome credit and officially supports CommaFeed.
PikaPods shares 20% of the revenue back to CommaFeed.
[![PikaPods](https://www.pikapods.com/static/run-button.svg)](https://www.pikapods.com/pods?run=commafeed)
### Download precompiled package
mkdir commafeed && cd commafeed
wget https://github.com/Athou/commafeed/releases/latest/download/commafeed.jar
wget https://github.com/Athou/commafeed/releases/latest/download/config.yml.example -O config.yml
java -Djava.net.preferIPv4Stack=true -jar commafeed.jar server config.yml
The server will listen on http://localhost:8082. The default
user is `admin` and the default password is `admin`.
### Build from sources
git clone https://github.com/Athou/commafeed.git
cd commafeed
./mvnw clean package
cp commafeed-server/config.yml.example config.yml
java -Djava.net.preferIPv4Stack=true -jar commafeed-server/target/commafeed.jar server config.yml
The server will listen on http://localhost:8082. The default
user is `admin` and the default password is `admin`.
### Memory management
The Java Virtual Machine (JVM) is rather greedy by default and will not release unused memory to the
operating system. This is because acquiring memory from the operating system is a relatively expensive operation.
However, this can be problematic on systems with limited memory.
#### Hard limit
The JVM can be configured to use a maximum amount of memory with the `-Xmx` parameter.
For example, to limit the JVM to 256MB of memory, use `-Xmx256m`.
#### Dynamic sizing
The JVM can be configured to release unused memory to the operating system with the following parameters:
-Xms20m -XX:+UseG1GC -XX:-ShrinkHeapInSteps -XX:G1PeriodicGCInterval=10000 -XX:-G1PeriodicGCInvokesConcurrent -XX:MinHeapFreeRatio=5 -XX:MaxHeapFreeRatio=10
This is how the Docker image is configured.
See [here](https://docs.oracle.com/en/java/javase/17/gctuning/garbage-first-g1-garbage-collector1.html)
and [here](https://docs.oracle.com/en/java/javase/17/gctuning/factors-affecting-garbage-collection-performance.html) for
more
information.
## Translation
Files for internationalization are
located [here](https://github.com/Athou/commafeed/tree/master/commafeed-client/src/locales).
To add a new language:
- add the new locale to the `locales` array in:
- `commafeed-client/.linguirc`
- `commafeed-client/src/i18n.ts`
- run `npm run i18n:extract`
- add translations to the newly created `commafeed-client/src/locales/[locale]/messages.po` file
The name of the locale should be the
two-letters [ISO-639-1 language code](http://en.wikipedia.org/wiki/List_of_ISO_639-1_codes).
## Local development
### Backend
- Open `commafeed-server` in your preferred Java IDE.
- CommaFeed uses Lombok, you need the Lombok plugin for your IDE.
- Start `CommaFeedApplication.java` in debug mode with `server config.dev.yml` as arguments
### Frontend
- Open `commafeed-client` in your preferred JavaScript IDE.
- run `npm install`
- run `npm run dev`
The frontend server is now running at http://localhost:8082 and is proxying REST requests to the backend running on
port 8083