How to store multiple cache data in ReactJS ?

Last Updated : 30 Jul, 2024

Storing Data in a cache is an important task in web applications. We can store multiple cache data in the browser and use it in our application whenever needed. Caching is a technique that helps us to store a copy of a given resource in our browser and serve it back when requested.

Prerequisites

React JS
CacheStorage

Approach

To store multiple cache data in React JS we will use the Windows cache that helps to access the cache stored in the browser window. Define a function that accesses named data in the cache storage and then puts the custom data the user needs to store in the browser.

Steps to create React Application

Step 1: Create a React application using the following command:

npx create-react-app foldername

Step 2: After creating your project folder i.e. folder name, move to it using the following command:

cd foldername

Project Structure:

Project Structure

Example: This example implements the above-mentioned approach and stores multiple caches named CacheOne, CacheTwo, and CacheThree using our defined function.

// Filename - App.js

import * as React from "react";

export default function App() {

    // Function to add our give multiple cache data
    const addMultipleCacheData = async (cacheList) => {
        for (let i = 0; i < cacheList.length; i++) {
            // Converting our response into Actual Response form
            const data = new Response(
                JSON.stringify(cacheList[i].cacheData)
            );

            if ("caches" in window) {
                // Opening given cache and putting our data into it
                let cache = await caches.open(
                    cacheList[i].cacheName
                );
                cache.put(cacheList[i].url, data);
            }
        }
        alert("Multiple Cache Stored!");
    };

    const CacheToBeStored = [
        {
            cacheName: "CacheOne",
            cacheData: "1 CacheData",
            url: "https://localhost:300",
        },
        {
            cacheName: "CacheTwo",
            cacheData: "2 CacheData",
            url: "https://localhost:300",
        },
        {
            cacheName: "CacheThree",
            cacheData: "3rd CacheData",
            url: "https://localhost:300",
        },
    ];

    return (
        <div style={{ height: 500, width: "80%" }}>
            <h4>
                How to store multiple cache data in ReactJS?
            </h4>
            <button
                onClick={() =>
                    addMultipleCacheData(CacheToBeStored)
                }
            >
                Add Multiple Caches
            </button>
        </div>
    );
}