The SRE bot I wrote in 2021 is now public
Most monitoring systems tend to answer whether the server is up or not. All of that can be green while an ecommerce checkout is broken, the cart page could even respond 200s, while the add-to-cart button does nothing, and the graphs stay flat because nothing crashed. In November 2021 I wrote a little bot to answer the other question. Every five minutes it opens a real browser, searches for a product, adds it to the cart and loads checkout, and confirms that under the conditions at the time, checkout is up. ...