Tutorials Cloud Computing Tutorial
Load Balancers — Complete Guide
Load Balancers — 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 16 of 100
Load Balancers
Foundations → Platform → Ops → Projects
Foundations · 1 — Cloud & networks · ~6 min · Cloud — Networking & Infrastructure
What is this?
Load balancers distribute traffic across healthy instances or containers in multiple AZs.
Why should you care?
CloudVerse public traffic hits an LB, never a single VM elastic IP as the long-term design.
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.
# L7 sketch
# Internet → HTTPS LB → target group (AZ-a, AZ-b)
# Health check: GET /health 200
# Idle timeout tuned for long uploadsWhat happened?
- L4 vs L7 features differ.
- Health checks must match real readiness.
- Sticky sessions are a last resort.
Practice next
- Create LB + two targets.
- Fail one target — traffic shifts.
- Watch /health.
- Enable access logs.
- Try least-outstanding-request.
Remember
Multi-AZ targets. Real health checks. TLS at LB usually.
CloudVerse HTTPS LB
Storefront spans two AZs.
Outcome: One AZ loss still serves.
Interview prep for this lesson
Practice these questions aloud after reading—each links to a full structured answer.
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