README.md

React ESI example

Example app with prefetching pages

How to use

Using create-next-app

Execute create-next-app with Yarn or npx to bootstrap the example:

npx create-next-app --example with-react-esi with-react-esi-app
# or
yarn create next-app --example with-react-esi with-react-esi-app

Download manually

Download the example:

curl https://codeload.github.com/zeit/next.js/tar.gz/canary | tar -xz --strip=2 next.js-canary/examples/with-react-esi
cd with-react-esi

Starting the Varnish cache server

A Docker setup containing Varnish with the appropriate config and Node is provided. Run the following command to start the project:

docker-compose up

The idea behind the example

React Server Side rendering is very costly and takes a lot of server's CPU power for that. One of the best solutions for this problem is cache fragments of rendered pages, each fragment corresponding to a component subtree. This example shows how to leverage React ESI and the Varnish HTTP accelerator to improve dramatically the performance of an app.

The example (and the underlying lib) can work with any ESI implementation, including Akamai, Fastly and Cloudflare Workers.