Data Science

From data streams to a data lake

Streams are what we call the raw measurement sequences that define a Strava activity, such as latitude/longitude, time, heartrate, power, elevation, or speed. Strava has more than 150 TB of stream data from over 1 billion activities. This dataset offers enormous potential…

Analytics at Strava

Just as our athletes are obsessed with tracking and analyzing their athletic pursuits, we here at Strava are obsessed with tracking our own performance; but instead of wattage and pace, we’re concerned with activity and engagement. In this post, I’ll talk a little bit about the infrastructure…

What Do 220,000,000,000 Data Points Look Like?