How Blinkit Delivers in Ten Minutes

They do not see a city as a map, they see it as a mesh of polygons, and when one gets slow they split it in half. Here’s the stack behind nine-minute delivery.

It goes layer by layer. On the ground: 2,000 square foot dark stores holding 6,000 items, picked by people rather than robots because in that space robots are the slower option. In the software: Kafka carrying rider location and inventory, a Redis lock deciding which of two neighbours gets the last packet of chips, and predictions that move stock before the storm arrives. For developers who like a systems teardown, ending on the interface trick that buys the rider half a minute.