What happened from the input URL to the completion of the page load (by Vczero)

First, the Primer

Just brush the microblog, see It Technology blog Big study sent this microblogging, so, want to from the perspective of web development (may be biased toward the front-end angle) to say this problem. If this is an interview question, I think it's good to use a diagram to illustrate the problem, not to mention a few hours. Of course, as a front-end & node. js, the angle will be inclined. If there is any mistake, please criticize the advice.

Second, my idea to let the diagram speak

Iii. Summary

(1) User-draw data;

(2) The server returns data based on user information & URI;

(3) The middle process and optimization is very complicated, according to the picture just painted, there are a lot of things to say;

(4) Pre-rendering or not, depending on server performance & consumption of client performance equalization as a reference indicator;

(5) Now my practice:url-> front-end (cache)->nginx load Balancing->node.js (merging request with computer room, obtaining resources based on authentication information, using multicore) + Cache-Db/cache DB

What happened from the input URL to the completion of the page load (by Vczero)