Building API Gateway with Kong or Tyk on VPS

Building API Gateway with Kong or Tyk on VPS: Professional Traffic Management 2026

Instead of directly exposing your microservices on VPS through public ports, using an API Gateway is a critical best practice. It gives you full control over traffic, security, and system observability. Kong and Tyk are two of the most powerful open-source API Gateways available today. They support rate limiting, authentication, centralized logging, and easy scaling. This article provides a detailed guide on how to implement them on your VPS.

1. Why Do You Need an API Gateway Instead of Direct Traffic?

When building a microservices system, allowing clients to call each service directly creates many risks:

No rate limiting control → Easy target for DDoS or abuse.
Repeated authentication logic in every service → Hard to manage and maintain.
No centralized logging → Difficult to debug and analyze.
Hard to implement circuit breaker, retry, or canary deployment.

An API Gateway acts as the single entry point, handling all requests before forwarding them to backend services.


// Interface simulating request processing through API Gateway
interface ApiRequest {
  path: string;
  method: string;
  headers: Record;
  userId?: string;
  ip: string;
}

interface GatewayResponse {
  status: number;
  forwarded: boolean;
  rateLimited: boolean;
  authPassed: boolean;
}

function processThroughGateway(req: ApiRequest): GatewayResponse {
  console.log(`[Gateway] Received request: ${req.method} ${req.path} from IP ${req.ip}`);
  // Rate limit → Auth → Logging → Forward
  return { status: 200, forwarded: true, rateLimited: false, authPassed: true };
}

2. Kong vs Tyk Comparison

Criteria	Kong	Tyk
License	Open Source + Enterprise	Open Source + Enterprise
Performance	Very High (Go + Lua)	High (Go)
Ease of Use	Good with Kong Manager	Very user-friendly, strong Dashboard
Plugins	100+ plugins	Rich plugin ecosystem
Best For	Large systems, high customization	Small teams, fast dashboard needs

3. Recommended VPS Specifications

To run the Gateway stably for 10-50 services:

CPU: 4-8 cores
RAM: 8GB - 16GB
Storage: NVMe 80GB+
OS: Ubuntu 22.04 / 24.04 LTS

It is recommended to run the Gateway on a dedicated VPS or use Docker to isolate it from other services.

4. Installing and Configuring Kong

Kong is a popular choice thanks to its high performance and rich plugin ecosystem.


// Sample Docker Compose for Kong + PostgreSQL
const kongDockerConfig = `
version: '3.8'
services:
  kong-db:
    image: postgres:15
    environment:
      POSTGRES_USER: kong
      POSTGRES_DB: kong
      POSTGRES_PASSWORD: kongpass
  kong:
    image: kong:3.6
    environment:
      KONG_DATABASE: postgres
      KONG_PG_HOST: kong-db
      KONG_PROXY_ACCESS_LOG: /dev/stdout
      KONG_ADMIN_ACCESS_LOG: /dev/stdout
    ports:
      - "8000:8000"   # Proxy port
      - "8443:8443"   # HTTPS
      - "8001:8001"   # Admin API
    depends_on:
      - kong-db
`;

console.log("Launching Kong Gateway with Docker Compose");

After running, use Konga (GUI) or the Admin API to create Services and Routes.

5. Installing Tyk API Gateway

Tyk stands out with its beautiful dashboard and ease of management.


// Tyk Gateway configuration example (tyk.conf)
const tykConfig = {
  "listen_port": 8080,
  "secret": "your-secret-key",
  "template_path": "/opt/tyk-gateway/templates",
  "mongo_url": "mongodb://localhost:27017/tyk",
  "redis": {
    "host": "localhost",
    "port": 6379
  },
  "enable_analytics": true,
  "analytics_config": {
    "type": "redis"
  }
};

console.log("Tyk Gateway has been configured with Redis and MongoDB");

6. Implementing Rate Limiting, Authentication & Logging

Both gateways strongly support the following features:

Rate Limiting: Limit requests by IP, User, or API Key.
Authentication: JWT, API Key, OAuth2, OpenID Connect.
Logging & Monitoring: Integration with ELK Stack, Prometheus + Grafana.


// Example Rate Limiting configuration in TypeScript (middleware logic)
interface RateLimitRule {
  endpoint: string;
  requestsPerMinute: number;
  userBased: boolean;
}

const rateLimitRules: RateLimitRule[] = [
  { endpoint: "/api/v1/payment", requestsPerMinute: 30, userBased: true },
  { endpoint: "/api/v1/public", requestsPerMinute: 300, userBased: false }
];

function applyRateLimit(rule: RateLimitRule, userId: string): boolean {
  // Logic to check and reject if limit is exceeded
  console.log(`[Rate Limit] ${userId} - ${rule.endpoint}`);
  return true; // allow
}

7. Best Practices for Operating API Gateway

Use HTTPS everywhere with Let's Encrypt.
Apply WAF (Web Application Firewall) plugin.
Regularly backup Gateway configuration.
Monitor backend service health checks.
Implement Blue-Green or Canary deployment.
Run Gateway in Production mode (do not expose Admin API publicly).

8. Conclusion: API Gateway Deployment Checklist

Before putting the system into production, check the following:

Have you chosen Kong or Tyk based on your team size?
Have you implemented centralized Rate Limiting and Authentication?
Is logging and monitoring fully integrated?
Is the Gateway running in Docker and easy to scale?
Have you configured HTTPS and Firewall to protect the Admin API?

Using Kong or Tyk on VPS makes your microservices system much more professional, secure, and scalable. This is a crucial step to building a solid backend architecture in 2026.

Hope this guide helps you successfully deploy a powerful and stable API Gateway!

Building an API Gateway with Kong or Tyk