Episode 21: Idempotent APIs | System Design Fundamentals | English

In this video, we explain Idempotent APIs in simple terms and cover important system design topics like Idempotent APIs, Situation, The Situation: The Chaos of Unreliable Networks, Safe Repeated Execution, Definition: Same Request, Same Result, Untitled Slide, Importance: Why We Need Retry Safety, The PUT Standard: Idempotent by Design.

If you are learning system design, backend engineering, distributed systems, or preparing for interviews, this episode will help you better understand the trade-offs, metrics, performance, reliability, and architecture decisions behind idempotent apis.

Explained in English

Timestamps
00:00 Intro
01:37 Situation and Unreliable Network Chaos
03:19 Idempotency and Retry Safety
05:50 PUT, POST, and Repeated Request Behavior
07:32 Duplicate Prevention, Storage, and Expiry
09:59 Payments and Order Integrity
11:35 Designing Reliable Idempotent APIs

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