CouchBase Internals

thanks @ldoguin ; my case is I am building a forum application ; when user can submit post in JSON documents and inserted in couchDB bucket; I am building now the system architecture, data modeling parts and I would like to consider performance also for reads and writes; That said I am exploring all the good possibilities and best practices to reach very good performance and the best of couchbase. So I am thinking maybe sequetial reads will be better (or not?) then random reads for sequential documents. Especially I thinking to use N1QL and views to extract post during the day and do some analysis on them …
Thanks