Flipkart's Promise team aimed to display delivery dates for products on its Search and Browse page within a stringent latency constraint of 100ms for a batch of 100 items. They tackled this challenge by innovating the existing computation flow, optimizing source and vendor capacity stores, and employing caching techniques using Aerospike. These changes enabled real-time delivery date calculations with over 90% accuracy at large scale QPS without compromising user experience.
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