Rate limiting
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LLD Series: Rate Limiter (Low-Level Design)
Typical phrasing: Design an API throttler, Limit 100 req/min per user, Implement token bucket. Asked at Visa/Mastercard (API gateway protection, card-network throttling), NPCI (UPI PSP throttling per...
13 min read
How to Implement API Rate Limiting for a SaaS Application
Choose rate-limit identities, algorithms, response headers, and distributed storage for APIs while avoiding limits that can be bypassed or unfairly shared.
4 min read