Efficiently compressing dynamically generated web content

The article discusses the problem of latency in web page loading due to the distance between servers and users, and how it can be mitigated by compressing dynamically generated content. It explains that while caching technologies help with static content, they are not effective for dynamic HTML content which is often personalized or frequently updated. The author then introduces external dictionaries of common web content as a solution to this problem, and describes two proposals - SDCH and ESI - that attempted to implement this concept but faced adoption challenges due to the complexity involved in generating shared dictionaries. Finally, the article presents CloudFlare's Railgun technology which uses delta compression to send only the differences between versions of a web page, resulting in significant reduction in data transmission and improved loading times.