API Platform

Coeus, a Policy-Based Data Platform

High-performance HTTP API providing secure MongoDB data access with JWT authentication, policy-based authorization, and rate limiting - serving thousands of requests per second at near-instant latency.

API performance dashboard showing request throughput and latency

API performance dashboard showing request throughput and latency

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Architected and developed Coeus, a high-performance HTTP API providing secure, policy-based access to MongoDB data with comprehensive authentication and authorization. Named after the Greek Titan of intellect, Coeus delivers insightful answers through data.

Built with TypeScript and Fastify for maximum performance, the platform features JWT-based authentication, granular policy authorization, advanced rate limiting, and comprehensive MongoDB operations. Supports complex aggregation pipelines, full-text search, index management, and real-time data manipulation with enterprise-grade security and monitoring.

Designed as a multi-tenant data service supporting diverse use cases from analytics dashboards to content management systems, with sophisticated user isolation and flexible permission models. The platform processes over 100,000 widget requests daily for the WCASG accessibility platform and powers multiple production applications.

Architecture & Performance

High-Performance Core

Fastify Framework - Ultra-fast web framework optimized for speed

  • ~750 req/sec sustained throughput per pod for data retrieval; auto-scalable
  • Comprehensive performance benchmarking with Autocannon load testing
  • Memory-efficient request processing with minimal overhead

TypeScript Infrastructure - Type-safe development with comprehensive testing

  • 100% test coverage across all modules and services
  • Node-Tap testing framework with watch mode and debugging support
  • ESLint, Prettier, and Husky for code quality enforcement
  • GitLab CI/CD with automated testing and deployment pipelines

Security & Authentication

JWT Authentication System - Stateless authentication with policy validation

  • In-memory user hashmap cache for real-time JWT validation without database calls
  • Automatic token invalidation and user status verification
  • Cross-origin security validation with Bearer token authentication

Policy-Based Authorization - Granular permission control system

MongoDB Integration

Comprehensive Data Operations - Full MongoDB API coverage

Technical Features

Rate Limiting & Monitoring

Multi-Level Rate Limiting - Comprehensive request throttling

Performance Monitoring - Real-time metrics and alerting

  • AWS CloudWatch integration with Pino structured logging
  • Comprehensive error handling with detailed HTTP status codes
  • Request tracking and analytics for usage pattern analysis
  • Automated performance benchmarking with load testing suite

Advanced Security Model

Multi-Tenant Isolation - Complete data separation

  • Organization-based data isolation with SRN (Solarix Resource Name) conventions, a custom resource naming scheme I developed, based on the AWS Resource Name (ARN) standard
  • Protected database for administrative operations
  • User verification with email confirmation and admin activation workflow
  • Secure password hashing and storage with bcrypt

Flexible Policy Engine - Dynamic permission management

  • Version-controlled policy statements with semantic versioning
  • Case-insensitive property handling with normalized execution
  • Allow/deny statement evaluation with explicit permission requirements
  • Administrative policy templates for full-access scenarios

Development & Deployment

Cloud-Native Architecture - Production-ready deployment

  • Docker containerization with multi-environment support
  • GitLab CI/CD with automated testing, building, and deployment
  • AWS integration with CloudWatch logging and monitoring
  • Environment-specific configuration management

Developer Experience - Streamlined development workflow

  • Hot-reload development with TypeScript compilation watching
  • Comprehensive API documentation with request/response examples
  • Test-driven development with Node-Tap and extensive mocking
  • Code quality enforcement with automated linting and formatting

The Coeus platform demonstrates exceptional technical execution, combining high-performance architecture with enterprise-grade security to deliver a robust, scalable data API solution serving multiple production applications and thousands of users.

Project Details

Client

Solarix Digital

Timeline

4 months

Role

Principal Software Engineer & Technical Lead

Technologies & Skills

Node.jsTypeScriptFastifyMongoDBHashicorp VaultJWTDockerAWS CloudWatchPino LoggingAutocannonNode-TapJestESLintPrettierGitLab CI/CD

© 2025 Gabe Wyatt. All rights reserved.

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