Tutorials Cloud Computing Tutorial

Microservices — Complete Guide

Microservices — Complete Guide: free step-by-step lesson with examples, common mistakes, and interview tips — part of Cloud Computing Tutorial on Toolliyo Academy.

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Cloud Computing Tutorial · Lesson 76 of 100

Microservices

Foundations ✓Platform ✓OpsProjects

Ops · 3 — DevOps, security, scale · ~10 min · Cloud — Scalability & Distributed Systems

What is this?

Microservices split an application into small, independently deployable services with bounded contexts and own data stores.

Why should you care?

CloudVerse banking ships payments without redeploying the entire monolith.

See it live — copy this example

Use AWS/Azure/GCP free tier or local Docker/Kind. Sketches and YAML are meant to be typed and adapted.

# docker-compose lab (CloudVerse shop)
services:
  orders-api:
    image: cloudverse/orders:1.2.0
    environment:
      DB_HOST: orders-db
    ports: ["8081:8080"]
  inventory-api:
    image: cloudverse/inventory:1.1.0
    environment:
      REDIS_URL: redis://cache:6379
    ports: ["8082:8080"]
  gateway:
    image: cloudverse/gateway:1.0.3
    ports: ["8080:8080"]
    depends_on: [orders-api, inventory-api]

What happened?

  • Each service owns its schema.
  • APIs and async events connect them.
  • Operational complexity rises — invest in platform tooling.

Practice next

  1. Split one feature into its own repo.
  2. Define REST contract.
  3. Deploy two services independently.
  4. Add async checkout via message bus.
  5. Introduce contract tests between services.

Remember

Small deployable units. Own data per service. APIs + events connect.

CloudVerse checkout split

Inventory team releases daily; orders weekly.

Outcome: Independent deploys reduce release risk.

Interview prep for this lesson

Practice these questions aloud after reading—each links to a full structured answer.

Junior Detailed
Explain Services in the context of Cloud Computing.
Short answer: Interviewers want a crisp definition, a practical example from your projects, and awareness of trade-offs—not textbook dumps. Explain a bit more How to structure your answer (60–90 seconds) Define Services…
Mid Detailed
What are common mistakes teams make with Deployment when using Cloud Computing?
Short answer: Interviewers want a crisp definition, a practical example from your projects, and awareness of trade-offs—not textbook dumps. Explain a bit more How to structure your answer (60–90 seconds) Define Deploymen…
Senior Detailed
How would you debug a production issue related to Security in a Cloud Computing application?
Short answer: Interviewers want a crisp definition, a practical example from your projects, and awareness of trade-offs—not textbook dumps. Explain a bit more How to structure your answer (60–90 seconds) Define Security…
Junior Detailed
Describe a real-world scenario where Monitoring mattered in a Cloud Computing project.
Short answer: Interviewers want a crisp definition, a practical example from your projects, and awareness of trade-offs—not textbook dumps. Explain a bit more How to structure your answer (60–90 seconds) Define Monitorin…
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Cloud Computing Tutorial
Course syllabus

Cloud Computing Tutorial

Cloud — Foundations
Cloud — Networking & Infrastructure
Cloud — Virtualization & Containers
Cloud — Kubernetes & Orchestration
Cloud — Storage & Databases
Cloud — Serverless & DevOps
Cloud — Security & Observability
Cloud — Scalability & Distributed Systems
Cloud — AI, Performance & Cost
Cloud — Enterprise Projects
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