lambda-edge-serve-compressed-file

Lambda@Edge for serving Brotli or Gzipped file according to the Content-Encoding header. It supports CSS and JS files.

Requirements

1. Use S3 && Cloudfront
2. You MUST upload your CSS & JS files already compressed to the bucked. In other words, you MUST upload the same file three times: without compression, compressed with Brotli (and .br extension), compressed with Gzip (and .gzip compression).
3. You MUST deactivate gzip on-the-fly compression from CloudFront settings.
4. Use this Lambda@Edge in order to intercept Requests for CloudFront.

Useful resources: Get Lambda Event Source Gist