Imagine you run a messaging app used by billions of people. Every day, people upload photos, videos, and text as Status updates . But there is one important rule: a Status should disappear after about 24 hours.
Source: [Dev.to](https://dev.to/ravi-vishwakarma-hash/how-do-you-delete-billions-of-whatsapp-statuses-every-day-without-bringing-your-database-to-its-4aja)