RQ Algorithm

CREATE TABLE IF NOT EXISTS logstv.messages (
	timestamp timestamp,
	channelid bigint,
	userid bigint,
	message text,
	PRIMARY KEY ((channelid, userid), timestamp)
) WITH CLUSTERING ORDER BY (timestamp DESC);

Random Algorithm:
- ORDER BY DESC/ASC (2 queries) and find last and first ever message
- Generate random month in go between the 2 dates
- SELECT the months messages
- If zero messages, generate a new random month and SELECT that one. (Recursive) Stop when all Months between last and first message have been checked
- Count rows in selected months and do a random on that