This article explains how to design a consistent JSON response format for Spring Boot APIs, covering status‑code conventions, message handling, a reusable Result wrapper class, controller simplification, and a global @ResponseResult annotation with interceptor and advice for automatic response packaging.
Returning HTTP 200 for every API response hides real error information, complicates client error handling, breaks monitoring, caching and retry logic, and defeats the purpose of HTTP semantics, while proper status‑code usage simplifies development and improves reliability.
This article explains common HTTP status codes, demonstrates step‑by‑step API testing using Postman—including basic requests, exception handling, token management, test assertions, and collection runs—shows how to import Postman collections into Eolinker, compares the two tools, and adds practical tips and code examples.
The article traces how an early AJAX API that used only HTTP 200 and a simple JSON wrapper devolved into a tangled mix of proper RESTful codes, custom three‑digit‑plus statuses, pseudo‑resources, PATCH work‑arounds, and finally a pragmatic scheme that keeps 200 for success, adds extended numeric categories, and adopts verb‑adjective‑resource method names for clarity.
This article explains the fundamental components of an HTTP request—including URL, methods, headers, and body—details the request‑response workflow with TCP connections, outlines common request methods and their characteristics, and categorizes response status codes for effective web development and testing.
This article explains the origins of REST, why modern developers must follow RESTful conventions, and provides a step‑by‑step guide—including domain naming, versioning, endpoint design, HTTP verbs, filtering, status codes, error handling, hypermedia links, and data formats—illustrated with concrete code snippets.
This article explains how to design a unified JSON response format for backend services, define clear status‑code conventions, encapsulate results in a Result class, and use a custom @ResponseResult annotation together with a ResponseBodyAdvice interceptor to automatically wrap controller outputs, improving readability and error handling.
This article explains the purpose and classification of HTTP status codes—from informational 1xx to server error 5xx—while also providing an in‑depth walkthrough of the OSI seven‑layer model and its TCP/IP counterpart, detailing each layer’s role, protocols, and typical devices.
The article examines common misconceptions in RESTful API design, explaining why developers often limit interfaces to GET and POST, why some APIs return only HTTP 200 status codes, and how to decide the proper use of other methods and status codes for empty results.
This article explains what HTTP status codes are, categorizes them into informational, success, redirection, client error, and server error groups, and details the most common codes with examples and usage scenarios.
This guide outlines comprehensive backend API design recommendations, covering appropriate HTTP status codes, JSON request bodies, unique resource identifiers, timestamp formats, consistent URL structures, nested relationships, error message schemas, caching, pagination, versioning, security, and clear documentation with executable examples.
This article provides a thorough overview of the HTTP protocol, covering its basic format, workflow, request and response message structures, common methods, status codes, and URL composition, complete with examples and code snippets to help developers understand and use HTTP effectively.
This article presents a comprehensive visual reference of all standard HTTP status codes, from informational 1xx responses to server error 5xx codes, explaining each code's meaning and typical use cases for developers working with web APIs and browsers.
This article explores the origin, technical meaning, and cultural myths of the HTTP 404 “Page Not Found” error, tracing its development from early web protocols to urban legends and even unrelated aviation incidents, while clarifying common misconceptions about its naming.
The article explores the origins of the HTTP 404 status code, debunks the legend of CERN's Room 404, recounts mysterious flights named 404, and ties these stories together to explain why the error has become a cultural symbol of missing content.
This article provides a concise yet comprehensive guide to HTTP and its response status codes, explaining each class of codes (1xx‑5xx) and highlighting the most common codes developers encounter when building web applications.
This article explains the structure and meaning of HTTP status codes, detailing each of the five response classes (1xx informational, 2xx success, 3xx redirection, 4xx client error, 5xx server error) and providing concise descriptions for the most common codes within each class.
This article provides an extensive overview of the HTTP protocol, covering its layered network architecture, request/response processes, detailed header fields, caching directives, status codes, message bodies, as well as related components such as cookies, proxies, and servers.
This article provides a comprehensive overview of the HTTP protocol, covering its definition, stateless nature, connection handling, key characteristics, request/response workflow, header fields, status codes, caching mechanisms, and practical applications such as resumable downloads, multithreaded downloading, proxy servers and virtual hosting.
This article outlines essential RESTful API design guidelines, covering clear URL conventions, precise HTTP status code usage, proper JSON responses, error handling without misleading 200 codes, and the inclusion of hypermedia links to improve client navigation.
This article outlines essential RESTful API design principles, covering clear URL structures, proper use of HTTP verbs, precise status codes, appropriate response formats, and the inclusion of hypermedia links to create intuitive, maintainable, and standards‑compliant web services.
This article provides a comprehensive overview of HTTP status codes—from informational 1xx responses to client‑error 4xx and server‑error 5xx codes—including the newer RFC 6585 codes, explaining their meanings and typical usage scenarios for developers.
This article explains essential RESTful API design details—including URL conventions, HTTP verb usage, status‑code precision, proper JSON responses, and HATEOAS linking—to help developers create clear, consistent, and user‑friendly web APIs.
This comprehensive guide walks you through the fundamentals of HTTP, covering its definition, hypertext, transfer, protocol layers, related components like browsers and servers, request‑response flow, methods, headers, status codes, content negotiation, and security extensions such as HTTPS and WAF.
This article provides a concise overview of the most frequently used HTTP status codes, explaining the meaning of each 1xx, 2xx, 3xx, 4xx, and 5xx series and detailing individual codes such as 200, 201, 301, 404, and 500 to help developers interpret server responses correctly.
This article explains web crawlers—what they are, their classifications, typical use cases, and step‑by‑step workflow—covers the robots protocol, then delves into HTTP and HTTPS fundamentals, request/response structures, common methods, headers, status codes, and the security trade‑offs of HTTPS.
This comprehensive guide explains the HTTP protocol, covering its connection model, request and response message structures, common methods, URL components, version differences, header field categories, the request/response lifecycle, status code classifications, and the practical distinctions between GET and POST.
This guide explains the nine HTTP methods, highlights the five most common ones for RESTful APIs, outlines essential API design principles, and details proper usage of HTTP status codes and error responses to build robust, maintainable backend services.
This article provides a comprehensive overview of the HTTP protocol, covering its connection model, request and response structures, common methods such as GET, POST, OPTIONS, detailed header fields across general, request, response, and entity categories, URL components, version differences, and status code classifications.
This article explains the purpose, classification, and detailed meanings of all HTTP status codes, helping developers interpret server responses and troubleshoot client‑server communication issues effectively.
This article provides a comprehensive overview of the HTTP protocol, covering its evolution from 0.9 to 2.0, the structure of request and response messages, common methods and status codes, header fields, MIME types, URI/URL distinctions, and the underlying mechanisms of web resource handling and concurrency.
This article explains the purpose and proper use of HTTP 3xx redirect status codes—from 300 Multiple Choices to 307 Temporary Redirect—along with related caching headers like Cache-Control and ETag, highlighting differences, SEO implications, and how browsers handle each case.
This article explains how to design a well‑structured RESTful API by covering protocol choice, domain naming, versioning, endpoint conventions, HTTP verbs, filtering, status codes, error handling, response formats, hypermedia links, authentication, and data format recommendations.
