Meta’s Facebook and Instagram apps opened a port on the device (localhost), and websites with the Meta tracking pixel would quietly send telemetry to it. That let them track people even in incognito sessions, across roughly 17,000 US sites.
At Uber, our MySQL® fleet is the backbone of our data infrastructure, supporting a vast array of operations critical to our platform. Uber operates an extensive MySQL fleet, consisting of over 2,300 independent clusters. Building a control plane to manage this fleet at such a massive scale, while ensuring zero downtime and no data loss, is among the most challenging problems in the industry.
Some of the interesting and insane facts I learned about SQLite
And by "all," I mean everything: core product, failed pivots, miscellaneous