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Bot-Building with ksqlDB

Robin Moffatt has an interesting project for us:

But what if you didn’t need any datastore other than Kafka itself? What if you could ingest, filter, enrich, aggregate, and query data with just Kafka? With ksqlDB we can do just this, and I want to show you exactly how.

We’re going to build a simple system that captures Wi-Fi packets, processes them, and serves up on-demand information about the devices connecting to Wi-Fi. The “secret sauce” here is ksqlDB’s ability to build stateful aggregates that can be directly accessed using pull queries. This is going to power a very simple bot for the messaging platform Telegram, which takes a unique device name as input and returns statistics about its Wi-Fi probe activities to the user:

Click through for the tutorial.

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