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> The Raspberry Pi is a little underpowered for serious computation, so I need to offload processing to my local Kafka cluster.

Couldn't this be done on the Raspberry Pi with a O(n) search in the OpenFlights data? Probably less sexy, but a simple grep with location and time range should be enough.

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That wouldn't show you the real power of KSQL though.

hmm, still seems like odd usage.

given that in the end the query goes for specific time window, wouldn't "regular" sql work fine (vs event processing) ?

Or with an old surplus Core2 laptop.

Using an RPi with an SDR dongle is already pushing its limits, let alone piling on more load. I can't understand why he'd use it other than for buzzword recognition.

Of course the lower-effort solution would have beem simply to run an FR24 playback for his location at 06:00...

Often it is easier to put the RPi, SDR, and antenna in a good place to receive signals then it is to run high quality antenna cable inside. It also helps isolate your main network from lightning strikes.

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