Hi all, this is indeed a dumb question but better asking and sound dumb rather than taking dumb decisions. I'm thinking to buy the following option and I wonder if it would be enough to run a forum with a peak of 600 concurrent users. [image: 1627312505372-ca67f926-fa86-46f5-9335-8f2debec7bf3-image.png] I'm pretty confident that the number of concurrent connections to Mongo DB (max 500) has nothing to do with the number of users connections to the forum, but would be great if somebody confirms based on his/her experience. Cheers, R

Hi, Have NodeBB used "optimistic concurrency locking"? I think in NodeBB there is 'UPVOTE' concept, While upvoting there has to be 'Optimistic concurrency locking', So it can handle multiple database insert operation at a time while upvoting single post by multiple users. Please let me know where do I find the code for 'Optimistic Concurrency locking', and guide me how to handle multiple insert operation at a time in redis database. Thanks!!