As of writing this blog post, Hotjar has been installed on 151,036 sites. Over the past few days, we had an average of 525 million requests to our script per day. That’s 21,875,000 per hour. And 364,583 per minute. Our databases contain 37.25TB of data and grow by around 5GB per day. We write 1,500 requests to the database per second.
Keeping up with this scale requires a level of infrastructure optimization that you would never normally need. At Hotjar, engineers have a unique opportunity to work on a product that reaches millions. The challenges we face are endless, but the feeling of satisfaction we get when something we’ve built works exactly as we planned it to, for so many users, is absolutely priceless.