The backend fetches the realtime traffic alert feed, parses it and caches it, and serves a response that only contains the interruptions that are related to metro. The Twitter bot is running in Heroku, where I also run the backend for the service. The Twitter bot is available at used a library called twit for the Twitter bot. Turned out that was relatively straightforward. I hesitated a bit in the beginning, because I had never implemented Twitter bots before. The project has been ongoing now for about a year.Īfter implementing the basic website, someone asked me to implement a Twitter bot for the “service”. The project was supposed to be a joke, but as several people have pointed out it has become a useful service that helps people save time while commuting to work. The project is called “Onko Metro Rikki?” (Is the metro broken?) and you can test it out at onkometrorikki.fi. Last summer, I started learning Elm as a beginner by using it in a small and silly side project of informing people in Helsinki when the metro is broken.
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