CloudFront Caching

• We can cache based on
  • Headers
  • Session Cookies
  • Query String Parameters
• Cache lives at each Cloudfront Edge Location
• We want to maximise cache hit and minimise requests to origin
• We can control the TTL of the cache (0 seconds to 1 year). It can be set by Cache Control header, Expires header
• Invalidate cache using CreateInvalidation API
• We can separate static and dynamic distribution