For no reason other than "because I can", I have loaded eight years worth of fuel prices for German petrol stations into a database...all 2.1 BILLION of them. What statistics would you be interested in?
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How did you get the raw data? Is there a public data file or did you have to scrape it?
Data has to be provided by petrol stations via an API, but it's only available to select consumers because the German Government didn't want to make it open data. tankerkoenig.de provides a CSV dump of the files, which I used for this project. I wrote about this a while back: https://dev.to/mongodb/how-to-scale-to-a-billion-documents-in-symfony-16pf
TankerkönigTankerkönig: Spritpreise für alleAktuelle Spritpreise für Super E5, E10 und Diesel vergleichen und die günstigste Tankstelle in deiner Nähe finden. Kostenlos und transparent, direkt aus der amtlichen Quelle (MTS-K).
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