Too early to tell. These sites are not yet “settled” so to speak. Lots of registrations but not enough connections to evaluate the impact and also configuration is changing every day. 

Early takeaways so far:

- 500+ online members is possible without clustering.

- Timeline cacheing which added for the next update helps significantly.

- Some issues in notifications and in DB have been found and addressed.

- We might switch to MySQL8/InnoDB.