Here's a TECHNICAL_GUIDELINES.md section you can include in your repo to help your team get familiar with essential tools and concepts you’re using:

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📘 Technical Guidelines

This repository provides a platform for hands-on practice and understanding of core backend engineering topics, including Docker, Kubernetes, and JavaScript locking mechanisms. Below are guidelines and learning resources to help you get up to speed.

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🐳 Docker Training

This project uses Docker and Docker Compose to containerize services for development and deployment.

🔹 Topics to Learn

• Dockerfile: Understand how app images are built.
• Docker Compose: Manage multi-container setups.
• Volumes: Persistent data across container restarts.
• Networks: How containers communicate internally.
• Environment Variables: Configure containers securely.

🔸 Commands to Practice

# Build and run containers
docker-compose up --build

# Stop containers
docker-compose down

# View logs
docker-compose logs -f

# Execute into a container
docker exec -it <container_name> bash

📚 Suggested Resource: Docker Getting Started Guide

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☸️ Kubernetes (K8s) Basics

Familiarize yourself with K8s concepts for scalable, production-ready deployments.

🔹 Core Concepts

• Deployment: Manages application rollout (replicas, strategy, updates).
• Service: Exposes Pods to internal or external traffic.
• ConfigMap: Externalize app configuration.
• Secret: Securely pass sensitive data.
• Pod: The smallest unit of compute.
• Namespace: Logical grouping of K8s resources.

🔸 Useful Commands

# View deployments, pods, services
kubectl get deployments
kubectl get pods
kubectl get svc

# Apply configuration
kubectl apply -f deployment.yaml

# View pod logs
kubectl logs <pod_name>

# Port-forward for local testing
kubectl port-forward svc/my-service 8080:80

📚 Suggested Resource: Kubernetes Basics

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🔐 Locking Demo in JavaScript

This repository includes a small demo to showcase locking techniques used to prevent race conditions, especially useful when dealing with cache and concurrency in Node.js.

🔹 Concepts to Explore

• In-memory locking with Map or Set
• Distributed locking (e.g., via Redis)
• Promise-based locking to prevent overlapping operations

🔸 Basic Example

const locks = new Set();

async function lockAndRun(resourceKey, action) {
  if (locks.has(resourceKey)) {
    throw new Error('Resource is locked');
  }

  try {
    locks.add(resourceKey);
    await action();
  } finally {
    locks.delete(resourceKey);
  }
}

📚 Suggested Reading: Node.js Concurrency and Locking Patterns

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Feel free to expand this guide as more training topics and internal tools are introduced.