Kafka's Big Sale

During sale season, the hottest time is the 00:00 start of promotions. Hundreds of thousands of people go to the site and sweep the stock from the storefront in minutes. On the one hand, we need to ensure that the storefront is accessible and that tens of thousands of orders can be placed per minute. On the other hand, not a single order should be lost, all payments processed, boxes reach their recipients. The load of courier pickup in the morning, buyers storming the PVZ in the evening, new stock items every few hours.