我不确定哪种NoSQL适合我的场景

I am trying to design create a cloud based system (IaaS) that will gather data from sensors (water pollution related activity) and upon certain events will decide to process the data for a specific sensor. Data characteristics are: 1. For each sensor data is being sent once every couple of days (up to 6 times a month) 2. each sensor reading contains about 5000 events that are encapsulated in 50-100 messages that are sent to the server (such "session" takes about 20 minutes where messages are sent every 5 seconds) 3. I am building the system to handle rate of 30,000 messages per second. 4. processing of the data shouldn't be real time , I have about 10 minutes once the "session" is finished to do the processing. 5. 90% of the sessions are not interesting and can be thrown away once they are finished. the other 10% have event or event encapsulated in the messages that according to them I need to decide if I need to process the entire session data and send an alert to the sensor that there is a pollution.I am trying to design create a cloud based syst