Server-Side Rendering With Next.js

Server-Side Rendering With Next.js

What is Server Side Rendering (SSR) This entire process of fetching data from the database, creating an HTML page and serve it to user is known as SSR. Next.js builds the HTML page at build time and serves the pre-rendered page from server to browser with minimal JavaScript code and when page is loaded by browser, its JavaScript code runs and makes the page fully interactive.

Prerequisites

Basic understanding of React.js and Functional Programming Concepts.

Problem with Client Side rendering (CSR)

React, Angular and Vue are used to create Single Page Applications (SPAs). But they all provide CSR means whole application is rendered on client side by browser. So due to this, rendering of our initial page will take some time.

So to render our pages much faster we can use Next.js (Framework for React), which renders our pages on server side and give us pre-rendered HTML for our pages.

What is Server Side Rendering (SSR)

When a user request a webpage, server prepares the page by fetching user-specific data and sends it to the user’s machine. The browser then construes the content and displays the page. This entire process of fetching data from the database, creating an HTML page and serve it to user is known as SSR.

How Next.js helps in SSR

Next.js builds the HTML page at build time and serves the pre-rendered page from server to browser with minimal JavaScript code and when page is loaded by browser, its JavaScript code runs and makes the page fully interactive. (This Process is called Hydration)

Pre rendering using Next.js

source — next.js

Two forms of pre-rendering

  1. Static Generation (SSG): HTML is generated at build time.
  2. Server Side Rendering: HTML is generated on each user request.

What are we going to build

A Next.js application with SSG which shows list of users. This is a new feature of Next.js which is available in Next 9.0 and later versions. You can check the application here. Complete source code can be found on Github.

javascript next react programming web-development

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