Server side caching of commonly requested items

[twagoo]

The following requests can be expected to be made with relatively high frequency:

• The home page (application root)
• The highlighted items on the front page
• The facets on the front page
• The search page with results for an empty query

All of these could be cached, although probably not all of them should have the same time to expire.

Caching could happen at the level of the HTTP request (cache the response), and/or at the level of retrieving the input data (cache the information retrieved from the index). The former might be easiest and yield the highest performance gains. Choice of technology requires some investigation.

[twagoo]

Cache control on the Spring side, and server side caching in the nginx proxy might be a good solution:

• NGINX content caching: https://docs.nginx.com/nginx/admin-guide/content-cache/content-caching/
• HTTP caching with Spring controllers: https://docs.spring.io/spring-framework/reference/web/webmvc/mvc-caching.html