Real-World Architectures
Design Search Autocomplete / Typeahead
Search autocomplete, or typeahead, enhances user experience by predicting search queries as users type. It balances low latency, high relevance, and scalability through techniques like prefix matching, ranking algorithms, and distributed caching.
Trie data structurePrefix matchingRanking algorithms (TF-IDF)Caching (Redis, CDN)Edit distance (Levenshtein distance)Data indexingReal-time updatesShardingPersonalizationRate limiting
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