The article explores the use of Elasticsearch for analyzing city bike data in Oslo, particularly focusing on the congestion patterns and availability of bikes at different racks. The author describes a method to extract bike rack data from a webpage using a combination of Scala and HTML parsing, and then indexes the data in Elasticsearch for analysis. Through various queries, including statistical and histogram facets, the author demonstrates how to calculate averages, track availability trends, and assess the probability of bike rack depletion at specific times. The article emphasizes the flexibility and speed of Elasticsearch in handling such data analysis tasks, despite some limitations compared to traditional SQL. It also highlights the potential for further refinement of queries and reindexing of data to improve analysis over time.