Back-of-envelope capacity estimation for the news feed system design interview: DAU assumptions, storage per post, cache sizing for hot users, and QPS peaks, updated July 2026.
Schema and API design for the news feed system design interview: feed table, friendship graph, REST vs GraphQL, and cursor pagination vs offset, updated July 2026.
Deep-dive on scaling bottlenecks for the news feed system design interview: the celebrity problem, hot partitions, cache stampede, and cross-region replication, updated July 2026.
A complete July 2026 walkthrough of the news feed system design interview question, covering fan-out on write vs read, ranking algorithms, real-time updates, and pagination strategy.
A deep dive into the architecture behind search autocomplete systems: the trie service, data collection pipeline, aggregation jobs, and serving layer that make sub-100ms suggestions possible.
A complete walkthrough of designing a search autocomplete system for interviews, covering trie data structures, prefix matching, frequency-based ranking, and real-time suggestion delivery.