Requirements of the Typeahead Suggestion System’s Design
Explore the initial phase of System Design by defining the functional and non-functional requirements for a Typeahead Suggestion System. Calculate precise resource estimations for storage, bandwidth, and servers, ensuring the design meets strict low-latency and scalability constraints.
Requirements
We will design a typeahead suggestion system that meets the following functional and non-functional requirements.
Functional requirements
The system suggests the top
Non-functional requirements
Low latency: The system must provide suggestions in real time, with latency under 200 ms. Since the average time between keystrokes is 160 ms, the system must respond quickly to remain useful and prevent stale suggestions.
Fault tolerance: The system must provide suggestions even if individual components fail.
Scalability: The system must support an increasing number of users and queries over time.
Resource estimation
Typeahead improves the search experience by suggesting query completions while the user types. Design for a workload comparable to Google Search scale. Google processes more than 3.5 billion searches per day. This scale requires careful capacity planning and distributed infrastructure. Estimate storage and bandwidth requirements for the proposed system.