The reason to use real time recommendations is there are contextual informations. However, Gorse doesn't use contextual informations, it doesn't handle real time recommendations yet.
Contextual information is not the only reason. New content/new users is the primary reason my current work place wants more real time recommendation especially when we mostly want to recommend content created in the last day or two. Items that are more than a week old should rarely be recommended. This is common for social media platforms.
Thanks for your insight. In the recommendation scenario that freshness is important, real-time recommendation is more in demand.