mysql - Alerting framework for incoming traffic -

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currently put hourly traffic (total number of input requests) of website in mysql table. keep data last 90 days.

i want check every hour, lets 6th hour, has traffic increased/decreased beyond threshold last 7 days or last 30 days 6th hour traffic. basically, see pattern of traffic. different hours have different values.

-> there alerting framework can use purpose? -> if yes, can suggest open source?

-> if no, thinking of keeping running average of last 7 days / last 30 days in mysql table every hour. and according, write script generate alerts based on numbers. not sure whether should mean, median or standard deviation. can enlighten me there?


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