Rejax

API

Reverse AJAX service for real-time client notifications

Overview

Rejax is a Reverse AJAX (Comet) service enabling servers to push real-time updates to clients without constant polling. Key endpoints include /subscribe (join a message channel), /publish (send data to subscribed clients), and /webhook (trigger notifications via external events). Responses are JSON-formatted, compatible with web/mobile clients. Use cases: real-time chat apps, live dashboard updates, collaborative tool alerts, e-commerce order notifications, and instant content sync. It eliminates the need to manage complex server-side push infrastructure, simplifying interactive feature development.

Example Integration (JavaScript)

script.js JS


fetch('https://rejax.io/')
  .then(res => res.json())
  .then(data => console.log(data))
  .catch(err => console.error(err));

Key Features

Real-time push notifications
Channel-based messaging
JSON response format
Subscription & publish endpoints
Webhook integration support

Frequently Asked Questions

? Is Rejax free to use?

Rejax offers a freemium model—free tier with basic features and rate limits, plus paid plans for higher usage and advanced capabilities.

? Does Rejax require an API Key?

Yes, an API key is mandatory for authenticating requests to subscription, publish, and webhook endpoints.

? What response format does Rejax use?

Rejax primarily uses JSON for both requests and responses, ensuring easy parsing across most client-side frameworks.

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Tool Info

Pricing Freemium

Category Development

Platform Public API

Pros

⊕ Reduces client polling overhead
⊕ Simplifies server-to-client communication
⊕ Lightweight client setup
⊕ Scalable for multiple concurrent users

Cons

⊖ Rate limits on free tier
⊖ Requires stable server connection
⊖ Limited advanced features in basic plan