System Design · Security & Observability
Security & Observability
Protecting systems and understanding what is happening inside them.
01
Chapter One
Authentication & Authorization
Who Are You, and What Can You Do?
Coming Soon
Authentication & Authorization
This chapter covers JWT, OAuth 2.0, OpenID Connect, and the RBAC vs ABAC models for controlling access to your system.
📋 Chapter 1 — Summary
- Summary content pending.
02
Chapter Two
Zero Trust & Defense in Depth
Never Trust, Always Verify
Coming Soon
Zero Trust & Defense in Depth
This chapter covers zero trust architecture, mTLS for service authentication, and the layered defense model for system security.
📋 Chapter 2 — Summary
- Summary content pending.
03
Chapter Three
Secrets Management
Credentials Don't Belong in Code
Coming Soon
Secrets Management
This chapter covers how to handle credentials, API keys, and certificates securely with rotation, audit trails, and automated injection.
📋 Chapter 3 — Summary
- Summary content pending.
04
Chapter Four
Observability — Logs, Metrics, Traces
The Three Pillars of Knowing What's Happening
Coming Soon
Observability — Logs, Metrics, Traces
This chapter covers the three pillars of observability, the tools that implement them, and how to wire them together in a production system.
📋 Chapter 4 — Summary
- Summary content pending.
05
Chapter Five
SLOs, SLAs, SLIs & Error Budgets
Reliability as a Measured Commitment
Coming Soon
SLOs, SLAs, SLIs & Error Budgets
This chapter explains how SLIs, SLOs, and SLAs work together, and how error budgets make reliability a concrete engineering decision.
📋 Chapter 5 — Summary
- Summary content pending.
06
Chapter Six
Incident Response Patterns
What You Do When Things Break at 3am
Coming Soon
Incident Response Patterns
This chapter covers incident severity, runbooks, blameless post-mortems, and chaos engineering as a proactive practice.
📋 Chapter 6 — Summary
- Summary content pending.