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Programming language: Elixir
License: Apache License 2.0
Tags: Frameworks    
Latest version: v2.3.0

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README

[Logo](./logo/Reactive-Interaction-Gateway-logo-cropped.png)

RIG - Reactive Interaction Gateway

The missing link between backend and frontend -- stop polling and go real-time!

Build Status

Take a look at the documentation and get in touch with us on Slack!

What does it solve?

  • Let RIG take care of client connection state so you don't have to.
  • Send events to RIG and have them forwarded to clients based on their event subscriptions.
  • Use RIG to forward client requests to backend services.

Built on open standards, RIG is very easy to integrate – and easy to replace – which means low-cost, low-risk adoption. Unlike other solutions, RIG does not leak into your application – no libraries or SDKs required.

For more details take a look at the documentation.

Feature Summary

  • Easy to use and scalable by design:
    • Supports tens of thousands stable connections per node even on low-end machines.
    • Easy to add additional nodes.
    • Built on the battle-proven Erlang/OTP distribution model.
    • Only uses in-memory data structures - no external dependencies to configure or scale.
  • Firewall friendly and future proof using Server-Sent Events (SSE):
    • HTML5 standard.
    • Regular HTTP requests, so no issues with proxy servers or firewalls.
    • Connection multiplexing with HTTP/2 out of the box.
    • SSE implementation (browser) keeps track of connection drops and restores the connection automatically.
    • Polyfills available for older browsers.
  • WebSocket connections are supported, too.
  • HTTP long polling for situations where SSE and WS are not supported.
  • Uses the upcoming CloudEvents specification.
  • Flexible event subscription model based on event types.
  • Use existing services for authentication and authorization of users and subscriptions.
  • JWT signature verification for APIs as a simple authentication check.
  • Session blacklist with immediate session invalidation.

Getting Started

Take a look at the getting-started tutorial.

API Documentation

RIG exposes its API documentation on its API endpoint under /swagger-ui. For integration into an existing swagger UI, the related JSON document can either be retrieved at runtime or [found on disk](./priv/static/rig_api_swagger.json) after compiling RIG at least once.

Metrics

RIG exposes Metrics in Prometheus format on its API endpoint under [/metrics](http:localhost:4010/metrics)

Contribute

  • Use issues for everything.
  • For a small change, just send a PR.
  • For bigger changes open an issue for discussion before sending a PR.
  • PR should have:
    • Test case
    • Documentation (e.g., moduledoc, developer's guide, operator's guide)
    • Changelog entry
  • You can also contribute by:
    • Reporting issues
    • Suggesting new features or enhancements
    • Improve/fix documentation

See the developer's guide and [CONTRIBUTING.md](./CONTRIBUTING.md) for details.

License

The Reactive Interaction Gateway (patent: granted) is licensed under the Apache License 2.0 - see [LICENSE](LICENSE) for details.

Acknowledgments

The Reactive Interaction Gateway is sponsored and maintained by Accenture.

Kudos to these awesome projects:

  • Elixir
  • Erlang/OTP
  • Phoenix Framework
  • Brod
  • Distillery

.


*Note that all licence references and agreements mentioned in the RIG README section above are relevant to that project's source code only.