API Engineering & Systems Integration
High-throughput REST & GraphQL API infrastructure with microsecond latency
Overview
Opticlon designs and implements resilient, high-speed API layers that connect disjointed software systems. Whether building microservices for internal enterprise tools or exposing public GraphQL/REST APIs for developer ecosystems, we guarantee high throughput, rate limiting, and bulletproof security.
Technical Capabilities
GraphQL & RESTful Endpoint Design
Flexible, self-documenting API schemas with efficient query resolvers.
Redis Multi-Layer Caching
Cache frequent query results to achieve microsecond response times.
API Gateway & Security Throttling
Token authentication (JWT/OAuth2), IP throttling, and CORS protection.
Asynchronous Queue Pipelines
BullMQ and Celery message queues for background processing and webhooks.
Database Query Optimization
Prisma and SQL query tuning with automatic index management.
Comprehensive OpenAPI / Postman Specs
Complete developer documentation for effortless team onboarding.
Problems We Solve
Slow Third-Party API Roundtrips
Implemented asynchronous background job processing and Redis caching layers.
Lack of API Standards & Documentation
Generated interactive OpenAPI/Swagger and GraphQL schema documentation automatically.
DDoS Vulnerability & Uncontrolled Rate Usage
Configured API gateway token bucket rate limiting and IP throttling.
Brittle Legacy System Integrations
Engineered robust adapter middleware translating legacy SOAP/XML to modern REST/JSON.
Our Process
API Contract Definition
Mapping endpoints, payload schemas, authentication methods, and error codes.
Data Model & Resolver Engineering
Building database queries, ORM mappings, and resolver functions.
Caching & Middleware Setup
Adding Redis caching, rate limiters, and error handling middleware.
Integration & Load Testing
Simulating peak concurrency loads with k6 performance scripts.
Documentation & Release
Publishing interactive Swagger/Postman suites and CI deployment.
Pricing
Targeted REST/GraphQL API integration for existing applications.
- Up to 10 API Endpoints
- Redis Caching Setup
- JWT / Key Auth
- OpenAPI Documentation
Full API gateway architecture connecting multiple internal services.
- GraphQL / REST Gateway
- BullMQ Queue Pipeline
- Rate Limiting & Security
- Automated Postman Collection
High-throughput public developer API platform with developer portal.
- Developer Portal & Docs
- SDK Code Generation
- Ultra-Resilient SLA
- 24/7 Telemetry
Frequently Asked Questions
GraphQL or REST: Which should we choose?
GraphQL is ideal for complex web/mobile frontends needing flexible data querying, while REST is great for third-party integrations and public APIs.
How do you prevent API rate limit abuse?
We implement Redis sliding-window algorithms and API keys with tiered rate limit buckets.
Can you integrate with legacy ERP or legacy databases?
Yes, we build adapter layers that bridge legacy systems to modern web applications.
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Technology Stack
- Node.js
- Express
- FastAPI
- GraphQL
- PostgreSQL
- Redis
- Prisma
- Docker
Ready to get started?
Book a free technical scoping session with our senior engineering team.
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