CloudFront Lab

• Creating a cloudfront network, AKA CloudFront Distribution
• CloudFront origin will be an S3 bucket
• Can have multiple origins per distribution
• Can also have an EC2 instance, Elastic load balancer, or physical server on premise
• Need to know theoretically what is CloudFront at a high level
• TTL needs to be shorter if you are uploading the same file
  • Reduce TTL if it is changing frequently
  • Set the TTL to a fraction of refresh frequency depending on how important the material being up to date is
• Use signed URL to restrict access to paid users
  • EXAM: access content you are selling
    • Restrict access to paid users
    • Use Signed URLs or Signed Cookies
• Use invalidations if you need to clear cache to update a version of something
  • Invalidates object on cache and clears it
  • Charged every time you do it