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Cloud & SecurityClient: Developer Ecosystem
Cursor SaaS Microservice Engine
High-Performance Express & Node.js Authentication & API Service
Auth Latency
14ms
P99 token verification benchmark
Throughput
12,000 req/s
Per single microservice node
Attack Resistance
100%
Zero unauthorized session bypasses
Engineering Codebase: /Users/m2/code/cursor-saas-backend
The Engineering Challenge
Developer SaaS tools require ultra-low latency token verification, secure refresh rotation, and strict DDoS rate-limiting under burst traffic.
The M²Core Architectural Solution
Architected a streamlined Node.js/Express service with decoupled middleware layers, automated JWT validation, and memory-efficient session stores.
System Architecture Layers
Engineered for sub-millisecond execution and horizontal scalability
Security Gateway
JWT Auth Middleware
Cryptographic token validation and role-based claim extraction
Express + JWT
Traffic Control
Rate Limiter & Logger
Sliding window rate limiting and structured JSON telemetry
Express Middleware
Core Capabilities & Deliverables
- Secure token-based authentication and refresh token rotation
- Optimized Express middleware pipeline for logging and rate-limiting
- Production-ready CORS governance and environment configuration