Infrastructure System Designs

Worked Infrastructure system design walkthroughs: the requirements, the trade-offs, real numbers and the component choices behind each design.

Browse all system designs

  1. Backup and Restore System with Verified Recovery

    Design a production-grade backup system that captures, stores, and periodically verifies data recovery across databases, object stores, and filesystems at scale.

    Infrastructure · intermediate · 12 min read

  2. Capacity Planning and Load Forecasting for Infrastructure

    A rigorous system design for collecting metrics, forecasting demand, and automatically provisioning infrastructure before load spikes cause outages.

    Infrastructure · advanced · 12 min read

  3. Cloud Cost Optimisation and FinOps: Rightsizing, Commitments and Showback

    A practical system design for collecting, attributing, and acting on cloud spend data — covering rightsizing engines, commitment management, and per-team showback pipelines.

    Infrastructure · intermediate · 12 min read

  4. Configuration Management and Environment Promotion

    A deep dive into managing application config across dev/staging/prod environments, promoting changes safely, and avoiding configuration drift at scale.

    Infrastructure · intermediate · 12 min read

  5. Edge Computing: Edge Functions, PoP Deployment and Edge State

    A deep-dive into deploying compute at CDN edge nodes — covering edge functions, point-of-presence topology, state synchronization, and the latency/consistency trade-offs that define real-world edge systems.

    Infrastructure · advanced · 12 min read

  6. Forward-Deployed Engineering Platform: Multi-Tenant and Air-Gapped Software Delivery

    A complete system design for shipping, configuring, and operating software inside customer environments—covering single-tenant installs, air-gapped sites, per-customer secrets, telemetry, break-glass access, and fleet-wide upgrades.

    Infrastructure · advanced · 12 min read

  7. Immutable Infrastructure, Golden Images and Phoenix Servers

    Replace mutable, long-lived servers with versioned, pre-baked images and disposable instances that are destroyed and recreated rather than patched in place.

    Infrastructure · intermediate · 12 min read

  8. Infrastructure as Code: State, Modules, Drift, Blast Radius and Review Gates

    A deep dive into IaC system design covering Terraform state management, module registries, drift detection, blast radius containment, and policy-enforced review gates.

    Infrastructure · intermediate · 12 min read

  9. Internal Developer Platform with Self-Service Golden Paths

    Design a production-grade IDP that gives engineers self-service access to infrastructure, pipelines, and environments through opinionated golden paths, reducing cognitive load and toil.

    Infrastructure · advanced · 12 min read

  10. Multi-Region and Multi-Cloud Topology: Failover, Traffic Steering and Data Residency

    A deep-dive into designing globally distributed systems across multiple regions and clouds, covering active-active failover, intelligent traffic steering, and regulatory data residency enforcement.

    Infrastructure · advanced · 12 min read

  11. Secrets Management: Vault, KMS, Dynamic Credentials and Rotation

    A deep-dive into secrets management architecture covering HashiCorp Vault, cloud KMS, dynamic credential issuance, and automated rotation at scale.

    Infrastructure · intermediate · 12 min read