I'm making a crawling website with django.

Currently, when users connect to the DB, they have implemented crawl, save information, print it out from the DB, and show it to the users. Each time you connect, the user crawls, which slows the load down a lot. So, I'm going to implement it on the backend side and import it through Jquery document.ready after crawling, but can I get an error if I import it like this?

Is it correct that the web page works by loading JavaScript and then importing DB data when loading the web page? Or since JavaScript load is asynchronously processed, is there a separate order to get it?