I am really interested in Redis, I have an idea and wanted to know if it is a suitable use case, or if it is not any other suggestions on a data store. Also any tips on storing
This isn't an ideal design because it won't support your read pattern effectively and it will probably wasteful in terms of RAM if your [result] is short/small. Instead, look into using Redis' sorted sets with the timestamp as score, in the following fashion:
ZADD [system]:[event] [timestamp] [result]
Note that set members have to be unique so if [result]'s cardinality is low, make it unique by concatenating the timestamp to it (and filtering it out when you graph), i.e.:
ZADD [system]:[event] [timestamp] [result]:[timestamp]
This way you'll be able to fetch ranges of measurements by calling ZRANGEBYSCORE and graphing the results.