Datan Driven Prefetch and Adaptive Loading

A module to easily integrate prefetching and adaptive loading in web apps.

Methods

useNetworkStatus()

Params: initialConnectionType: The network connection needed to be assumed if navigator.connection is not supported by browser. Could be any one of '4g','3g','2g' or 'slow-2g'.

adaptiveCms()

Params: cmsData: The data from the Content Management System which includes all the asset links in JSON format. imgConfig: The custom configuration to pass to control compression factor and quality of image for diffrent network connections.(min): Minimum size of image, usefull is compression is too high,(compression ratio,image quality): A compression of 0.5 means reducing image size by 50%. Default value: { 'min':40, 'slow-2g':[0.05,5], '2g':[.1,10], '3g': [.5,70], '4g':[0.95,85] }

effectiveConnectionType: Network connection type i.e result of useNetworkStatus() assetRegex: Regular Expression to find all the assets in the cmsData. It would be used to find all assets and modify them as per network connection type.

prefetch()

Params: predictionApiParams: Parameters to be used to the Prediction Api Url. predictionApiUrl: Prediction Api Url. assetRegex: Regular expression to find all assets in cmsData. cmsApiUrl: Content Management Api Url. Used to fetch cms data of predicted page paths. cmsQueryParams: Query parameters to be sent for CMS. effectiveConnectionType: Network Connection Type. imgConfig: The custom configuration to pass to control compression factor and quality of image for diffrent network connections.

Installation and usage

The easiest way to use data-driven-prefetch-and-adaptive-loading is to install it from npm.

npm install data-driven-prefetch-and-adaptive-loading

Use Network Status to get current Network Status:

import {useNetworkStatus} from 'data-driven-prefetch-and-adaptive-loading'
const initialNetworkStatus = '4g'
const { effectiveConnectionType } = useNetworkStatus(initialNetworkStatus)
export default effectiveConnectionType

For Adaptive Loading, instead of returning CMS data return the adaptive CMS data.

import {adaptiveCms} from 'data-driven-prefetch-and-adaptive-loading'
import effectiveConnetionType from '../utility/common/networkConnection'

and then return adaptive cms by just wrapping cms response.

return adaptiveCms(response.data,undefined,effectiveConnetionType,CMS_ASSET_REGEX)

For Prefetching, just make a call to prefetch to get all assets prefetched.

import { prefetch } from 'data-driven-prefetch-and-adaptive-loading'
import effectiveConnectionType from 'services/utility/common/networkConnection'

Inside componentDidMount(), make a call to prefetch

const predictionParams = {
    url:"https://www.example.com" + location.pathname,
    net:effectiveConnectionType
}
const cmsQueryParams = getQueryParam()
prefetch(predictionParams,PREDICTION_API_URL,CMS_ASSET_REGEX,CMS_API_URL,cmsQueryParams,effectiveConnectionType,PREDICTION_API_IMG_CONFIG)