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Switching from HTTP to MQTT with Help of AWS IoT

In the field of location tracking there needs to be lot of back-and-forth communication between devices and the backend. Device transmits location stream and health information (battery level, network strength, etc.). Backend processes this information, applies business logic on top and sends configuration commands back to devices in order to orchestrate tracking. These configuration commands determine when to start/stop tracking, frequency at which to collect GPS data (time and distance), frequency at which to transmit GPS data and so on.
In a world with patchy mobile networks making all this communication robust is quite a task. It is important to choose the right network protocol and design the communication semantics to get maximum benefit of the protocol’s capabilities. We recently switched a large part of our device-backend communication from HTTP to MQTT. This blog is about how we achieved it and our learning from it so far.

First of all, here’s why we


 

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