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Render React.js on-demand with CDN caching.

Minimal example on how to render React & React Router v4 with Amazon API Gateway, AWS Lambda and CloudFront.

Online demo

Basic example app from React Router documentation. Initial server-side render and acts as SPA from there.


Deploying to AWS

  1. Edit project.json and set proper lamdba execution role.

  2. Replace s3:// in package.json with your S3 bucket, e.g. s3://your-bucket/assets/.

  3. npm run build to build front-end code

  4. npm run deploy to deploy lambda and upload front build to S3

Setting up API Gateway

  1. In API Gateway home, click Create API

  2. Choose New API and enter some API name, click Create API.

  3. Choose Actions -> Create resource

  4. Check Configure as proxy resource and click Create resource

  5. In /{proxy+} - ANY - Setup, choose Integration type as Lambda Function Proxy, select your lambda's AWS region and enter name of your uploaded lambda function (react-apig-lambda_render-react if you didn't change name in project.json). Click Save.

  6. Choose Actions -> Deploy API, set Deployment stage as [New Stage], enter stage name and click Deploy

  7. Now you should be able to invoke the lambda renderer by navigating to https://your-invoke-url/your-stage-name/index

Setting up CloudFront

  1. Create distribution, paste your API Gateway url as Origin domain name, e.g. https://your-invoke-url/your-stage-name/index. Make sure to include /index.

  2. Set your custom domain in Alternate Domain Names (CNAMEs)

  3. You can leave other settings as they are if you don't want to customize anything, click Create distribution.

  4. Go to your distribution, navigate to Origins, click Create origin

  5. Choose your S3 bucket (you should create it now if you haven't already. Make sure there's assets directory). Click Create.

  6. Go to your distribution, navigate to Behaviors, click Create Behavior.

  7. Set Path Pattern as assets/*, choose your S3 origin and click Create.

  8. In your domain's DNS management interface, point your domain's CNAME to your CloudFront distribution.


Render React.js on-demand with CDN caching




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