Caf.js

Co-design permanent, active, stateful, reliable cloud proxies with your web app and gadgets.

See https://www.cafjs.com

Library for React.js background rendering

Reduces latency for React.js applications by server-rendering the UI with a CA.

Rendering could be triggered by a CA's state change, or periodically. The goal is that there is always a reasonably up-to-date version in the (Redis) cache.

To access that pre-rendered page we simply do a http GET using an unguessable cache key in the query:

  http://foo.vcap.me:3000?cacheKey=dfgsraa44ww6632ss

The page is cached by Redis, and any CA can serve this http request, eliminating redirections that increase latency.

API

See {@link module:caf_react/proxy_react}

Configuration Example

See {@link module:caf_react/plug_react} and {@link module:caf_react/plug_ca_react}

framework.json

    // after "cp"
    {
        "name" : "react",
        "module": "caf_react#plug",
        "description": "React.js background rendering",
        "env": {
            "appFileName" : "index.html",
            "separator" : "<section id=\"content\">",
            "cacheService" : "cp",
            "expiresInSec" : 10
        }
    }

ca.json

        {
        "module": "caf_react#plug_ca",
        "name": "react",
        "description": "Manages background rendering for this CA.",
        "env" : {
            "maxRetries" : "$._.env.maxRetries",
            "retryDelay" : "$._.env.retryDelay"
            "coinPlayTime" : 900
        },
        "components" : [
            {
                "module": "caf_react#proxy",
                "name": "proxy",
                "description": "Provides the background rendering API.",
                "env" : {

                }
            }
        ]
    }