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Design a Search Autocomplete

Design a search-as-you-type service for searching products or users. Suggestions must be returned very quickly on every keystroke.

20,000 RPS
3,000,000 DAU
<50ms p95
SLA 99.9%

Components

Edge type

Hint

Press enter or space to select a node. You can then use the arrow keys to move the node around. Press delete to remove it and escape to cancel.
Press enter or space to select an edge. You can then press delete to remove it or escape to cancel.

ArchCase

System Design

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