--- title: "Amazon interview question: System design / Architecture for auto suggestions | type ahead" url: https://daily.dev/posts/amazon-interview-question-system-design-architecture-for-auto-suggestions-type-ahead-akrosiioh source_url: https://www.youtube.com/watch?v=xrYTjaK5QVM type: video:youtube source: "Tech Dummies - Narendra L" published: 2026-05-31T07:49:19.015Z updated: 2026-05-31T09:25:47.575Z tags: ["career", "distributed-systems"] reading_time: 28 upvotes: 0 comments: 0 language: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Amazon interview question: System design / Architecture for auto suggestions | type ahead **[Tech Dummies - Narendra L](https://daily.dev/sources/techdummies)** · 28 min read · 0 upvotes · 0 comments ## Summary A walkthrough of how to design a type-ahead/autocomplete system, as commonly asked in system design interviews. Covers key requirements (sub-100ms response time, relevance, ranked results), the trie data structure and its time complexity, a precomputation optimization that stores top-N suggestions at each prefix node in a prefix hash table, and a high-level architecture using API servers, load balancers, Redis/Cassandra clusters. Also briefly touches on incorporating user-specific search history and trending keywords into results. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [How Vinted Serves Personalised Search Autocomplete](https://daily.dev/posts/how-vinted-serves-personalised-search-autocomplete-rm1zjwc0u) · Vinted · 0 upvotes · 0 comments - [Autocomplete: Making Search More User-Friendly](https://daily.dev/posts/autocomplete-making-search-more-user-friendly-ato4y7fhc) · Manticore · 1 upvotes · 0 comments --- Tags: [#career](https://daily.dev/tags/career), [#distributed-systems](https://daily.dev/tags/distributed-systems) [View this post on daily.dev](https://daily.dev/posts/amazon-interview-question-system-design-architecture-for-auto-suggestions-type-ahead-akrosiioh)