Microservices Architecture with Docker and Kubernetes

Introduction to Microservices

Microservices architecture breaks applications into small, independent services.

Docker Basics

FROM node:18-alpine
WORKDIR /app
COPY package*.json ./
RUN npm install
COPY . .
EXPOSE 3000
CMD ["npm", "start"]

Kubernetes Deployment

apiVersion: apps/v1
kind: Deployment
metadata:
  name: api-service
spec:
  replicas: 3
  selector:
    matchLabels:
      app: api
  template:
    metadata:
      labels:
        app: api
    spec:
      containers:
      - name: api
        image: myapi:latest
        ports:
        - containerPort: 3000

Service Mesh

Implement Istio for traffic management and security.