Core
Rate Limiting
Rate limiting caps how fast a client or your whole fleet can hit a resource, so a burst of traffic or one runaway caller cannot melt a fragile downstream service or burn your third-party API quota. The interesting part is enforcing it across many machines without a race, and deciding whether to reject or queue when the limit hits.
a free account unlocks the core curriculum tier · no card
Related course lessons
- Choose retries from outcome evidence and a time budget →
30 min · Free with sign-in
Foundations of Forward Deployed Engineering · syllabus - Investigate undocumented behavior with bounded evidence →
28 min · Free with sign-in
Foundations of Forward Deployed Engineering · syllabus - Hardware arrives on a procurement cycle and your estimate arrives in a meeting →
30 min · Premium
Hard Deployments · syllabus
Related concepts
Practise this in questions
Coding & DSABuild a quota manager: per-key token buckets with lazy refill, reservations, and refund on failure →hard · PremiumSystem Design & Production EngineeringExplain how rate limiting works, fixed window, sliding window, token bucket. When does each break? →easy · FreeCoding & DSABuild a rate limiter: fixed window, then sliding window, then per-customer tiers →medium · PremiumSystem Design & Production EngineeringDesign rate limiting and quotas for an API with free, pro, and enterprise tiers. →medium · PremiumAI Security, Privacy & GovernanceDesign the API layer for developers to access AI models securely, keys, scopes, limits, and abuse controls. →hard · PremiumSystem Design & Production EngineeringDesign metering and billing for a multi-tenant LLM API charged by tokens. No double-billing on retries, and quotas that actually hold. →hard · Premium