Observed Signal · May 26, 2026 · Technical Guide · Source: DEV Community · Impact: 1/5 · Sentiment: Positive
What an API Is — A Plain‑English Guide
This developer-focused blog post explains what an API (Application Programming Interface) is using a restaurant analogy. It breaks APIs into key parts — the documentation as a 'menu', requests (orders) with action/target/details, and responses (plates) with status and content — and describes how APIs travel over HTTP/HTTPS. The post surveys common API styles (REST, GraphQL, SOAP, webhooks), gives a real-world weather-app example, and encourages readers to experiment with public APIs using tools like Postman. The article emphasizes that well-designed APIs hide backend complexity, enable composable software, and speed product development by letting teams reuse existing services for maps, payments, authentication and more.
Introductory developer guide that explains fundamental API concepts; useful for engineers but not specific to AdTech or industry‑shifting.
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Key Takeaways & Evidence Grounding
- Article explains APIs using a restaurant analogy (menu = documentation; server = API; kitchen = backend).
- Describes core API interactions: structured requests (action, target, details) and responses with status codes (examples: 200, 404, 500).
- Identifies common API styles: REST APIs, GraphQL, SOAP, and webhooks, and explains HTTP/HTTPS as the transport layer.
- Offers a real example (weather app round trip) and recommends hands-on practice with public APIs and tools like Postman.
Connected Companies & Entities
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REST API Design: Building APIs Developers Love
A developer guide (published 2026-06-05) that outlines practical principles and patterns for designing RESTful APIs focused on consistency, simplicity, predictability, and discoverability. It covers URL and resource naming (use nouns, avoid verbs), HTTP method semantics and correct status code usage, request/response envelope patterns, standard headers (e.g., Content-Type, Authorization, X-Request-ID), pagination/filtering/sorting best practices (cursor-based pagination, sparse fields), versioning strategies (URL and header-based), and deprecation signaling (Deprecation, Sunset, Link headers). The article includes code examples (Express) and recommends clear error envelopes and metadata for observability and developer ergonomics.
API Gateway: What It Is and Why It Matters
This technical explainer describes what an API Gateway is and why it is important in modern distributed and microservices architectures. An API Gateway acts as a single entry point between clients (web or mobile) and multiple backend services, simplifying communication by routing requests, performing authentication and authorization, aggregating responses, enabling monitoring/logging, and enforcing traffic controls such as rate limiting. The article uses an e-commerce product page as a practical example where the gateway consolidates product info, stock data and user reviews into a single response. It names popular implementations (Kong, NGINX, AWS API Gateway) and cites further reading from Sam Newman and Chris Richardson. Published on May 6, 2026 on DEV Community by thiago neves.
API Versioning Strategies: REST vs GraphQL
This technical guide compares API versioning strategies for REST and GraphQL, drawing on the author's multi-year experience and concrete operational examples. For REST the article reviews common approaches — URI/path versioning, query-parameter versioning, header-based versioning (e.g., X-Api-Version), and content negotiation via Accept media types — and lists trade-offs for cacheability, discoverability, routing complexity, and testing. For GraphQL it advocates schema evolution (single endpoint, add fields, mark deprecated fields with @deprecated) instead of traditional versioned endpoints. The author shares recommendations: plan and document versioning early, communicate deprecation timelines to clients, monitor version usage, avoid breaking changes by running versions in parallel, and consider an API gateway to route versions. The piece includes Nginx and FastAPI examples and real usage metrics from projects.
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