May 20
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serves as a masterclass on designing robust and scalable APIs. It journeys from foundational concepts to advanced architectural patterns and modern comparisons. Core Building Blocks & The Maturity Model * What is an API? The video uses the "restaurant waiter" analogy: the API is the middleman that takes your request to the kitchen (server) and brings back the data 01:21 . * Richardson Maturity Model: This measures the robustness of RESTful design 02:35 : * Level 0: Using HTTP as a simple pipe for XML/RPC. * Level 1: Breaking resources into individual URLs. * Level 2: Using standard HTTP verbs (GET, POST, etc.) uniformly. * Level 3: Introducing HATEOAS (Hypermedia as the Engine of Application State) for self-documenting APIs. Methods, Status Codes, and Best Practices * Idempotency: A crucial concept where making the same request multiple times (like DELETE or PUT) produces the same result on the server state 04:03 . * Status Code Families: * 200s: Success. * 300s: Redirection. * 400s: Client errors (you messed up). * 500s: Server errors (we messed up) 05:05 . * Design Rules: The video emphasizes versioning (e.g., /v1/), pagination for large datasets, and the Tolerant Reader pattern to prevent client crashes when the backend adds new fields 06:26 . The HATEOAS Advantage The speaker highlights HATEOAS as the most misunderstood constraint of REST. It involves providing dynamic hyperlinks within JSON responses so the server guides the client on available actions, effectively decoupling them and making the API self-documenting 07:08 . Modern Architecture: REST vs. GraphQL vs. gRPC Technology Best Use Case Key Features REST Standard Web APIs Resource-based, easy to cache, but prone to over/under-fetching 08:58 . GraphQL Mobile & Complex Frontends Client dictates the exact data needed; solves "news feed" latency issues 09:23 . gRPC Internal Microservices Uses binary Protocol Buffers for high-speed, strictly typed communication 11:00 . A Channel to share useful knowledge / Skill 🤓 一個開心share 實用小知識 / 技巧既channel 😆