API Gateway Rate Limiting Guide
Compare API gateway rate limiting approaches. When gateway-level vs application-level limiting is the right choice.
Gateway-Level vs Application-Level rate limiting
Implementing rate limiting requires deciding where to enforce rules: at the API Gateway or inside your Application Middleware.
1. Gateway-Level Rate Limiting
API Gateways (like Kong, AWS API Gateway, or Nginx) intercept traffic at the edge of your network.
- Pros: Blocks malicious traffic before it reaches your application servers, saving compute resources.
- Cons: Gateways typically lack access to application context, making it difficult to enforce dynamic rules (e.g. limits based on database user records or subscription tiers).
2. Application-Level Rate Limiting
Application rate limiters run as inline middleware inside your codebase (via client SDKs).
- Pros: Accesses application context to enforce granular rules (like user plans or payload sizes).
- Cons: Processing checks consumes application resources, exposing your backend to volumetric DDoS exhaustion if not protected by a front-end WAF.
3. The Hybrid Pattern
Most production architectures deploy a hybrid model: edge WAF rules (like Cloudflare) protect the network from volumetric surges, and application middleware (like LimitYourAPI) enforces granular business quotas.
Next Steps
Ready to protect your API with production-grade rate limiting? Here is the recommended path for API Gateway Rate Limiting Guide:
- Create a free account at [limityourapi.tech/login](/login) — no credit card required for the Hobby tier
- Generate an API key in the dashboard under API Keys
- Install the SDK: Run
npm install limityourapiand follow the [Node.js](/sdk/nodejs) guide - Follow the quick start guide at [/quickstart](/quickstart) for a 2-minute integration
- Configure rules in the dashboard for your highest-risk endpoints first
- Monitor analytics to tune limits based on real traffic patterns
Questions? Read the [documentation](/docs) or explore the [rate limiting education hub](/learn) for deep technical guides on algorithms, architecture, and production patterns.
Frequently Asked Questions
Should I use an API gateway for rate limiting?
Yes, for basic IP-based blocking at the network edge. For dynamic, user-specific plans or monetized quotas, application-level middleware is preferred.
What is API rate limiting?
API rate limiting controls how many requests a client can make in a given time window. It protects backends from abuse, ensures fair usage across tenants, and prevents cost overruns from traffic spikes or malicious bots.
Why use Redis for rate limiting?
Redis provides sub-millisecond latency, atomic operations via Lua scripts, and horizontal scalability. Centralized state ensures consistent limits across distributed application servers.
How fast is LimitYourAPI?
LimitYourAPI delivers rate limit decisions in under 15ms globally using atomic Redis Lua scripts. This is fast enough for inline middleware without adding perceptible latency to API responses.
Does LimitYourAPI support token bucket and sliding window?
Yes. LimitYourAPI supports token bucket, sliding window, fixed window, and cost-aware algorithms. You can configure per-route strategies without changing infrastructure.