Tutorials System Design Tutorial
Cloud Cost Optimization — Complete Guide
Cloud Cost Optimization — Complete Guide: free step-by-step lesson with examples, common mistakes, and interview tips — part of System Design Tutorial on Toolliyo Academy.
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System Design Tutorial · Lesson 89 of 100
Cloud Cost Optimization
Basics ✓ → Scale ✓ → Interview
Interview · 3 — Case studies · ~10 min · Module 9: Performance and Optimization
What is this?
Cost optimization right-sizes compute, storage tiers, idle resources, and architecture choices without breaking SLOs.
Why should you care?
ShopNest margins shrink when overnight replicas match noon sale capacity forever.
See it live — copy this example
Sketch the architecture on paper. These lessons focus on concepts and trade-offs.
Rightsizing: smaller pods off-peak via HPA mins
Storage: lifecycle cold tiers
Commit discounts for steady baseline
Kill idle staging oversized DBs
Architecture: cache to cut DB RU/IOPS spendRun Example »
This lesson uses terminal or setup steps. Run commands on your computer — the live editor appears on coding lessons.
What happened?
- Pay for peaks with autoscaling; commit for baselines.
- Lifecycle cold data.
- Architecture efficiency (cache) often beats pure discount shopping.
Practice next
- Chart ShopNest spend by service.
- Lower off-peak mins where safe.
- Lifecycle old logs/media.
- Tag resources by team for chargeback.
- Alert on spend anomalies.
Remember
Scale to demand. Tier storage. Don’t sacrifice HA blindly.
Off-peak HPA mins
ShopNest lowers overnight API mins.
Outcome: Monthly compute bill drops without hurting day traffic.
Interview prep for this lesson
Practice these questions aloud after reading—each links to a full structured answer.
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