Re:In spite of an increase in Internet speed, webpage speeds...
by bob1029 on Thursday August 06, 2020 @06:18PM
(#24076030)
The server has more knowledge than the client. Once economies of scale kick in, you can start to do things like speculative rendering of pages for users based upon prior access patterns, time of day, region, preferences, etc.
For instance, you could have a pre-render rule that says to trip if there's an 80% chance the user is just going to proceed to checkout and not back to the store based upon the type of product in the cart. This would mean that while the user is reviewing their shopping cart & options, the server could be generating the next view. Once the client hits "Proceed to Payment", the server (or CDN) can instantly provide the cached response from memory. This basically takes UX latency down to RTT between client & server if you have a very predictable application or are willing to speculate on a large number of possibilities at once.
For instance, you could have a pre-render rule that says to trip if there's an 80% chance the user is just going to proceed to checkout and not back to the store based upon the type of product in the cart. This would mean that while the user is reviewing their shopping cart & options, the server could be generating the next view. Once the client hits "Proceed to Payment", the server (or CDN) can instantly provide the cached response from memory. This basically takes UX latency down to RTT between client & server if you have a very predictable application or are willing to speculate on a large number of possibilities at once.