advancedAPI Design, Performance & Resilience
How would you rate-limit APIs differently for different customers or tenants?
Use a per-tenant key (API key, tenant ID) as the rate-limiter's bucket key instead of a single global limit — Resilience4j's RateLimiter or Redis-backed token buckets (as in Spring Cloud Gateway's RequestRateLimiter) both support a configurable KeyResolver so each tenant gets its own independent bucket and limit tier.
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