tldr; I'm going to say that Cassandra is probably the better choice for you.
may be lots of sensors including Camera for photos or Videos] - Where data flow is huge.
Due to its log-based nature, tracking sensor data is a good use case for Cassandra. The ability to handle large amounts of write throughput is a strength of Cassandra, and you can scale ...
Here are basic comparisons of some protocols mentioned above:
Messaging Technologies for the Industrial Internet and the Internet of Things Whitepaper (PDF)
Internet of Things: protocols war!
Choosing Your Messaging Protocol: AMQP, MQTT, or STOMP
IoT Protocol Wars: MQTT vs CoAP vs XMPP
Beyond MQTT: A Cisco View on IoT Protocols
Understanding The Protocols ...
What kind of protocol(s) are you using? If RPL is an option, then you can quickly start with Contiki OS, which has a simulator (Cooja) to run your experiment. NS2 (for Linux) is a much more open and general simulator with very big capabilities.
Fix for a bad SSID on a sonoff tasmota device.
I used a raspberry pi with wifi for these steps. Your mileage may vary.
sudo apt install aircrack-ng wireshark-gtk
Good idea to reboot now
Disconnect from any wifi networks. Disconnect from any wired networks.
sudo airmon-ng check kill
This will kill wpa supplicant and a couple of other processes.
Repeat step ...