Advanced Rate Limiting
Precision traffic control with sub-millisecond evaluation. Protect upstream services from overload while guaranteeing SLA compliance for enterprise tenants.
Core Throttling Algorithms
FluxGate implements industry-standard rate limiting strategies optimized for distributed microservice architectures. Choose the algorithm that matches your traffic patterns and latency requirements.
Sliding Window Log
Event-DrivenTracks exact request timestamps in a circular buffer backed by Redis Cluster. Eliminates boundary spikes seen in fixed windows. Ideal for payment processing endpoints requiring strict 120 req/min caps per tenant ID.
Token Bucket
Burst-TolerantRefills tokens at a steady rate while allowing controlled bursts. Configurable bucket capacity up to 5,000 tokens with 10ms refill intervals. Perfect for webhook ingestion and batch data synchronization jobs.
Endpoint-Level Configuration
Define granular limits directly in your routing manifest. FluxGate compiles these rules into a zero-configuration edge policy that syncs across all gateway nodes in under 200ms.
routes:
- match:
path: "/api/v2/billing/invoices"
methods: ["POST"]
rate_limit:
algorithm: "sliding_window"
window_size: "60s"
max_requests: 500
key_extractor: "header:X-Tenant-ID"
burst_allowance: 50
response_headers:
include_remaining: true
include_retry_after: true
upstream: "billing-service:8080"Scope limits by JWT claims, API keys, or client IP ranges without custom middleware.
Returns `X-RateLimit-Limit`, `X-RateLimit-Remaining`, and `Retry-After` on 429 responses.
Configurable fallback thresholds prevent cascade failures when the Redis state store experiences latency spikes.
Production-Grade Performance
Rate limiting shouldn't be your bottleneck. FluxGate's C++ evaluation engine processes traffic control rules in the data path with near-zero overhead.