The IETF’s new RFC 10008 defines a QUERY HTTP method that combines GET’s safety and idempotence with POST’s ability to carry large request bodies, offering a standardized way for API designers to send complex, read‑only queries without the limitations of URL‑encoded parameters.
The article explains why a POST request can result in two HTTP calls by detailing the same‑origin policy, the conditions that make a request simple, and how browsers automatically issue a CORS preflight OPTIONS request before the actual POST.
The article outlines a practical engineering framework for AI Skills, detailing when to modularize based on line count and workflow separation, how to improve AI readability with tables and scripts, when to choose MCP servers versus simple HTTP calls, and five non‑negotiable security rules to keep Skills reliable and maintainable.
A production change replaced two Nginx reverse‑proxy servers, introduced an upstream name containing an underscore, broke the Host header required by HTTP/1.1, and caused Spring Cloud Gateway to return 400 Bad Request for every request until the configuration was corrected.
This article compiles a curated list of 20 widely used Java libraries—covering logging, JSON processing, testing, utilities, HTTP, XML, Excel, bytecode manipulation, connection pooling, messaging, PDF, date‑time, collections, email, HTML parsing, cryptography, embedded databases, JDBC debugging, serialization, and networking—to help developers avoid reinventing the wheel and boost productivity.
This article walks through the OSI model, explains TCP three‑way handshake and four‑way termination, contrasts TCP with UDP, discusses TIME_WAIT issues, describes long vs short socket connections, shows how to design a custom protocol and implements a reusable Socket connection pool in Node.js.
The article explains that RPC outperforms traditional HTTP/1.1 + JSON because of a slimmer binary protocol, faster binary serialization, persistent long‑connection reuse, and an efficient NIO network model, while noting that HTTP/2 + gRPC narrows the gap.
The article breaks down the complete browser workflow from URL entry to page rendering, covering URL parsing, DNS lookup (recursive and iterative), TCP three‑way handshake, TLS negotiation, HTTP request/response exchange, and the final rendering steps, while also providing interview‑focused Q&A and a memorization mnemonic.
The article explains how the Model Context Protocol (MCP) lets AI tools like Cursor read PRDs, generate validated Midscene YAML test cases, and upload them to the HAL‑9000 platform through a unified three‑primitive architecture, choosing stdio or HTTP transport, while ensuring security and scalability.
This article explains what an API is, how it acts as a communication middle‑man between clients and servers, walks through HTTP request components, compares REST, GraphQL, gRPC and WebSocket, shows practical code examples, status‑code meanings, and provides a step‑by‑step learning roadmap for beginners.
The article explains forward and reverse proxy concepts, walks through the key stages of Nginx reverse‑proxy processing—including TCP connection, request reception, upstream selection via proxy_pass, load‑balancing algorithms, and content forwarding—and provides a complete configuration example with header settings and load‑balancing strategies.
This article compiles a curated list of production‑ready Go packages covering testing, logging, error handling, caching, databases, HTTP routing, HTTP clients, fault tolerance, Kafka, and various utility libraries, explaining their key features, concrete code examples, and why they are preferred in real‑world services.
Spring Boot can adopt the CloudEvents specification to unify event payloads across microservices, eliminating format inconsistencies; the article explains the spec, shows structured and binary HTTP modes, provides Maven dependencies, configuration, and code examples for producers, consumers, and reactive handling with Spring Cloud Function.
This article explains the HTTP 5xx status codes 502, 503, and 504, detailing their definitions, typical trigger scenarios, step‑by‑step troubleshooting flows, practical Bash scripts, comparison tables, real‑world case studies, and monitoring/alerting configurations to help operations engineers quickly pinpoint and resolve these errors.
This comprehensive guide explains the HTTP 5xx status code hierarchy, details the specific triggers and root causes of 502 Bad Gateway, 503 Service Unavailable, and 504 Gateway Timeout, and provides step‑by‑step diagnostic flowcharts, real‑world case studies, and ready‑to‑run scripts for rapid resolution and proactive monitoring.
The article examines why a company might require every HTTP API to use POST, compares GET and POST characteristics, discusses RESTful principles, outlines the trade‑offs of a POST‑only policy, and offers practical guidance for choosing the right method based on business needs.
The article reverse‑engineers the @tencent‑weixin/openclaw‑weixin npm package to reveal the full ilink API (five POST JSON endpoints), explains hidden required fields, demonstrates a QR‑code login flow, and provides a complete 120‑line Python client that can send and receive messages reliably.
PHP, often dismissed as outdated, actually offers unparalleled transparency with HTTP, a simple synchronous execution model, low entry barriers, built‑in web features, extensive documentation, and a massive ecosystem, making it an ideal language for beginners to master backend fundamentals.
This article provides a comprehensive technical guide for Java interviewers, detailing HTTP’s security flaws, how HTTPS resolves them through SSL/TLS encryption, certificate verification, and hybrid cryptography, and includes handshake steps, performance comparisons, common follow‑up questions, and concise memory mnemonics.
This technical guide walks developers through six HTTP API authentication techniques—None, Basic, Bearer Token, API Key, HMAC signature, and Open‑Platform hybrid—providing Java code samples, sequence diagrams, usage scenarios, and security best practices for each method.
This guide walks through the end-to-end setup of a WeChat public-account keyword auto-reply, covering the message flow, required server configuration in the WeChat console, and Java servlet implementations for the GET verification and POST message-handling endpoints.
The article examines why a company might mandate POST for every API, compares GET and POST characteristics, discusses RESTful principles, outlines the technical and business trade‑offs of such a policy, and shares practical guidance for choosing the right HTTP method.
This step‑by‑step guide shows how to use the Go‑Kratos microservice framework to create a clean‑architecture user service, covering environment setup, project scaffolding, Protobuf API definition, code generation, layered implementation (biz, data, service), server registration, and testing with curl.
This article explains the concepts, purposes, and mechanisms of TCP keepalive and HTTP keepalive, detailing kernel parameters, timing intervals, and how they prevent half‑open connections, along with practical commands, configuration tips for servers like Nginx and Gunicorn, and the interaction between the two layers.
This article explains the fundamental differences between HTTP GET and POST methods, covering their request line structure, header and body handling, safety and idempotence properties, caching behavior, length limits, TCP packet usage, and how HTTP distinguishes them for resource management.
The article examines why a company might mandate POST for every API, compares GET and POST characteristics, discusses RESTful best‑practice expectations, highlights the hidden costs of over‑standardization, and presents a more nuanced approach to API design for dynamic and static services.
This article explains why large file downloads can fail on unstable networks, how to use HTTP Range headers and status codes for resumable downloads, and provides a complete SpringBoot implementation—including controller, service logic, and range‑parsing code—to enable reliable partial content delivery.
This article explains what high‑throughput means for an HTTP server, why Node.js’s event‑driven, non‑blocking architecture makes it ideal, and provides step‑by‑step code examples—including a basic server, blocking vs. async I/O, clustering, keep‑alive, JSON optimization, and streaming—to help developers design scalable, low‑latency services.
The article explains how network protocols have evolved from raw TCP sockets to standardized HTTP and finally to RPC frameworks, showing that each step is an abstraction upgrade rather than a replacement, and clarifies when to use HTTP versus RPC based on system boundaries and engineering trade‑offs.
The article examines why a company might mandate POST for every API, comparing GET and POST characteristics, discussing RESTful benefits, highlighting the hidden costs of uniform POST usage, and sharing a practical hybrid approach that balances security, payload size, caching, and developer productivity.
This article explains how HTTP's stateless nature leads to the use of cookies, sessions, tokens, and JWTs for authentication, comparing their mechanisms, security trade‑offs, and practical interaction flows with clear diagrams.
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.
Cloudflare abandoned Nginx for its home‑grown Rust‑based proxy Pingora, detailing the architectural limits of Nginx, the design choices behind Pingora, and the measurable performance, efficiency, and safety gains achieved in production across billions of requests.
This guide explains how to use PHP's curl_setopt_array function to batch‑set cURL options, improving code readability and maintainability when sending HTTP requests, and includes a complete example with detailed code and important notes on option constants.
This guide explains the PHP get_headers() function, its syntax, parameters, and usage examples, showing how to fetch and inspect HTTP response headers for tasks such as file information retrieval, existence checks, and web crawling.
GET and POST are two of the eight HTTP request methods; this article explains their request‑line, header and body structures, compares their characteristics such as safety, idempotence, caching, length limits and TCP packet usage, and clarifies why HTTP distinguishes them despite sharing the same underlying protocol.
This article explains how to protect Go services from overload by implementing HTTP request rate limiting using the standard token‑bucket limiter, per‑IP throttling with a map and mutex, and a distributed approach with Redis and Lua scripts, complete with practical code examples and middleware integration.
This guide teaches you how to design clean, consistent RESTful APIs by following proven best practices for resource modeling, URL design, filtering, sorting, pagination, proper HTTP methods, status codes, error handling, and versioning to avoid common pitfalls and improve maintainability.
This guide explains how PHP's curl_getinfo function returns an associative array of request details, lists the most useful options such as effective URL and HTTP status code, and provides a complete example showing how to extract and display these metrics after a cURL request.
The Go core team’s new proposal adds a NewClientConn method to http.Transport, allowing developers to create independent client connections, control concurrency with RequestLimit and RequestsCompleted, attach state‑change hooks, and reuse existing Transport settings, all slated for Go 1.26.
This article traces the evolution from HTTP/1.1 to HTTP/3, explains how QUIC leverages UDP to achieve faster, secure connections, and details its handshake, connection migration, head‑of‑line blocking solutions, congestion and flow control mechanisms.
The article explains how TCP provides reliable byte‑stream transport but lacks message boundaries, how HTTP adds structured semantics with headers like Content‑Length, and why RPC frameworks such as gRPC are introduced to make remote calls feel like local method invocations, especially in modern microservice architectures.
This article explains why precise timeout control, robust retry mechanisms, idempotency guarantees, and performance optimizations are essential for Go HTTP clients in distributed systems, and provides concrete code examples and best‑practice configurations to improve reliability and throughput.
This guide explains the three‑layer caching strategy—HTTP cache headers, in‑memory caching, and Redis—detailing when to use each layer, how to implement them with FastAPI, common pitfalls, performance benchmarks, and best‑practice patterns for production‑grade applications.
This guide explains how Nginx implements both client‑side (browser) and server‑side (proxy) caching, details strong and conditional caching mechanisms, and provides practical configuration examples and code snippets to optimize cache behavior and improve web performance.
This article provides a comprehensive guide to PHP's header() function, covering its syntax, parameters, and practical code examples for page redirection, setting HTTP response headers, status codes, cache control, and file downloads, helping developers use it effectively.
This article walks through creating a lightweight, framework‑agnostic HTTP request library that extends fetch with features such as request cancellation, automatic caching, retry logic, concurrent control, progress tracking, and intelligent Server‑Sent Events parsing, complete with TypeScript interfaces, CLI scaffolding, and comprehensive testing.
This article explains the concept, structure, and types of domain names, the fundamentals of web pages and HTML—including document structure, tags, and HTML5 features—as well as the core principles, workflow, request/response formats, version evolution, and security extensions of the HTTP protocol.
This tutorial walks you through creating a lightweight PHP router—from understanding routing fundamentals and setting up project structure to writing the core Router class, configuring URL rewriting, defining routes with parameters, testing, and exploring extensions—empowering you to grasp framework internals and handle HTTP requests without a full‑stack framework.
This article introduces the open‑source Java utility library Hutool, showcasing how its concise APIs for date handling, file I/O, HTTP requests, encryption, and general utilities can dramatically reduce boiler‑plate code and boost developer efficiency.
This article combines practical advice for negotiating offers at Tonghuashun with a comprehensive Java interview cheat‑sheet covering method overloading vs overriding, final vs finally, sleep vs wait, HashMap insertion and resizing, reference types, HTTP request structure, status codes, thread‑pool parameters, and garbage‑collection algorithms.
This article provides a comprehensive comparison of the most popular Go web frameworks—including Beego, Buffalo, Echo, Gin, Iris, and Revel—covering popularity, learning curve, core routing features, middleware ecosystems, server capabilities, view engines, MVC support, caching, testing, and more, with concrete code examples and repository links.
This guide walks Go developers through the OSI and TCP/IP layering models, explains key transport and application protocols such as TCP, UDP, HTTP/1.1, HTTP/2, HTTP/3, RPC, WebSocket, and TLS, and provides practical Go code snippets and deployment tips for building performant, secure, and real‑time services.
This tutorial walks front‑end engineers through the fundamentals of Node.js, covering its runtime concept, installation, basic file operations, built‑in APIs, creating HTTP servers, using the Koa framework, simple database interactions, and calling third‑party services, all with clear code examples.
This article explains the fundamentals of HTTP and HTTPS, compares their features, details how internet messages travel through DNS, routers, IP and MAC addresses, describes request and response structures, ports, encryption methods, cookies versus sessions, and provides a comprehensive summary of their differences.
Learn what CORS (Cross-Origin Resource Sharing) is, why browsers block cross-origin requests, and how to configure servers—using Java, Express.js, or Spring Boot—to handle preflight checks, simple requests, and fine-grained security headers, ensuring safe and functional web applications.
Learn how to use PHP’s get_headers() function to fetch HTTP response headers, understand its parameters and formats, see practical code snippets, and explore common scenarios such as checking remote files, obtaining file metadata, and building web crawlers.
This comprehensive guide walks readers through the fundamentals of computer networking, covering architecture models, TCP and UDP protocols, HTTP basics, socket programming, IP addressing, ICMP, Ping, and related concepts such as routers, cookies, and token authentication, all illustrated with clear diagrams.
This article explains how the native fetch API, combined with the AbortController Web API, now offers zero‑dependency, cancellable, and timeout‑capable HTTP requests, effectively addressing the shortcomings that once made Axios the default choice for JavaScript developers.
This article introduces UniHttp, a declarative HTTP‑client framework for Java that replaces traditional HttpClient/OkHttp code with annotation‑driven interfaces, shows quick‑start setup, explains all supported annotations, lifecycle hooks, custom client configuration, and a real‑world enterprise integration example.
Guzzle is a powerful, extensible PHP HTTP client that simplifies sending synchronous or asynchronous requests, supports PSR‑7 and PSR‑18 standards, offers a middleware system, and integrates easily via Composer, making it ideal for API integration, file transfer, microservice communication, web crawling, and testing.
This article compiles essential backend knowledge, covering TCP vs UDP differences, why HTTP uses TCP, HTTP/2 and HTTP/3 improvements, status codes, long vs short connections, key Linux process commands, MySQL B+Tree indexing, C++ struct/class nuances, STL container types, map thread‑safety, and queue versus stack distinctions.
This guide explains the PHP curl_setopt() function, covering its syntax, parameters, return value, and a complete example that demonstrates configuring a cURL session to perform a GET request with URL, method, timeout, and response handling, helping developers master HTTP requests in PHP.
This guide explains what curl is, why it’s useful for network debugging and automation, shows how to install it on common Linux distributions, describes its syntax, lists the most frequently used options for requests, data transfer, output handling, debugging, and provides practical command‑line examples.
This article compares RPC and HTTP services, explains the OSI model layers relevant to each, details RPC architecture components, discusses synchronous and asynchronous calls, and reviews popular RPC frameworks such as gRPC, Thrift, and Dubbo, helping developers choose the right approach for large‑scale enterprise applications.
This article explains the PHP cURL curl_init function, covering its syntax, parameters, return values, and provides a complete example demonstrating session initialization, option setting, execution, error handling, and response parsing to help developers communicate with remote servers efficiently.
This article explains the PHP cURL library’s curl_init() function, covering its syntax, parameters, return values, and provides a complete example that demonstrates initializing a session, setting options, handling errors, executing requests, and processing JSON responses.
This article compares RPC and HTTP services, explains the OSI seven‑layer model, details RPC architecture and its synchronous versus asynchronous calls, reviews popular RPC frameworks such as gRPC, Thrift, and Dubbo, and discusses when to choose RPC over HTTP for enterprise applications.
This article introduces the lightweight OKHttpUtil wrapper for Java and Kotlin, outlines its key features such as automatic protocol detection, cookie handling, proxy and header configuration, GZIP decompression, and Spring Boot integration, and provides comprehensive code examples for GET, POST, file upload, download, chained requests, and custom API client creation.
This guide explains three ways Dify can invoke Java programs—using HTTP requests, defining custom tools with OpenAPI schemas, and configuring MCP communication—providing step‑by‑step setup, code examples, and configuration snippets for each approach.
This article compares the popular Python HTTP client libraries requests and httpx, outlining their core features, ideal usage scenarios, code examples for synchronous and asynchronous requests, installation steps, and a final recommendation to help developers choose the right tool for API testing.
This article provides a comprehensive guide to PHP's header() function, covering its syntax, parameters, and practical examples for page redirection, setting HTTP response headers, controlling cache behavior, and enabling file downloads, while emphasizing proper usage before output.
This article explains how to use PHP's curl_setopt function to configure cURL sessions, covering its syntax, parameters, return values, and a complete example that demonstrates sending a GET request with custom options and handling the response.
This article explains how the PHP curl_multi_getcontent() function works, demonstrates its use with a complete example for fetching multiple concurrent API responses, and highlights important considerations for ensuring each request has finished before retrieving its content.
The HTTP Referer header, a ubiquitous but often overlooked request field, records the source page of a user, aids traffic analysis, enables anti‑hotlinking and CSRF protection, and carries a historic misspelling that led to the Referrer‑Policy standards governing privacy and security.
This article explains how Cloudflare built Pingora, a Rust‑based HTTP proxy that outperforms Nginx in speed, efficiency, and security, detailing the architectural limits of Nginx, the decision to create a custom solution, design choices, performance gains, added features, and future plans.
This article traces the evolution from HTTP/1.1 to HTTP/3, explains QUIC's design and its advantages over TCP, and examines how features like connection migration, head‑of‑line blocking elimination, congestion control, and flow control improve latency and reliability for modern web applications.
The article examines why some companies mandate POST for every API, compares GET and POST characteristics, discusses RESTful principles, weighs the benefits and drawbacks, and offers practical guidance while showcasing an open‑source microservice project for deeper learning.
This tutorial walks you through creating a compact Python Tkinter GUI that can send GET/POST requests, handle JSON or XML payloads, support Bearer tokens, clean illegal URL characters, and be packaged into a standalone Windows executable using PyInstaller.
This article introduces the Retrofit Spring Boot Starter, a lightweight HTTP client framework for Spring Boot that simplifies HTTP request handling, supports custom OkHttpClient injection, annotation‑based interceptors, logging, retry, error decoding, circuit‑breaker integration, connection‑pool management, global interceptors, microservice calls, and flexible call adapters and converters.
Explain that “keepalive” is a concept used in both NGINX and HTTP protocol but with different meanings. In HTTP, keep‑alive (or persistent connection) is a header that allows a TCP connection to be reused for multiple requests, reducing latency. In NGINX, keepalive refers to the connection‑pool settings for upstream servers, controlling how many persistent connections are kept and their timeout.
This guide explains how the presence or absence of trailing slashes in Nginx location and proxy_pass directives changes the final proxied URL, providing eight concrete configuration examples and the resulting URLs to help you avoid common routing errors.
Learn how to eliminate repetitive error checks in Go HTTP servers by returning errors from handlers, defining a custom HTTPError type, wrapping handlers with an error‑handling middleware, and using concise helper functions, resulting in cleaner, more maintainable code.
This article explains the browser's same‑origin policy, its role in preventing XSS, CSRF and other attacks, details the protocol, host and port rules, illustrates with examples, and then describes CORS, simple and preflight requests, credential handling, and provides a complete request flow diagram.
The article explains how the Model Context Protocol (MCP) introduces Streamable HTTP as a modern, bidirectional transport that overcomes the one‑way, session‑less limitations of Server‑Sent Events, providing richer data formats, built‑in session management, and better resilience for AI assistants.
The article explains how SpringBoot's @ResponseStatus annotation can automatically set HTTP response status codes for methods and custom exceptions, reducing boilerplate code, improving maintainability, and offering flexible error handling, with practical examples and best‑practice guidelines.
Understanding the three HTTP timeout types—connect, write, and read—helps engineers pinpoint failures, while detailed examples of causes and observable symptoms guide troubleshooting, and step-by-step Chaos Mesh simulations demonstrate how to inject and monitor these faults to validate system resilience.
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.
This comprehensive guide explains domain name concepts, structures, and registration, introduces web page fundamentals and HTML basics—including tags, syntax, and HTML5 features—then covers HTTP protocol essentials, request/response formats, version evolution, and HTTPS security, providing a solid foundation for modern web development.
This guide explains how to configure custom HTTP request headers in Locust for GET, POST, and shared header scenarios, providing code examples, best practices for security, dynamic updates, and error handling to ensure effective load testing of APIs.
The article examines the new Streamable HTTP transport layer introduced in the Model Context Protocol (MCP), comparing it with the traditional HTTP+SSE approach and demonstrating its superior stability, performance, and client simplicity through architectural analysis, session management details, and extensive benchmark results.
This article explains how to use PHP's get_headers() function to fetch HTTP response headers from a URL, describes its syntax and parameters, provides code examples for retrieving and printing headers, and outlines common use cases such as file information, existence checks, and web crawling.
This article explains how to extend an open‑source smart production management system with MCP support by creating SSE/HTTP endpoints, a token‑based MAP, and a McpService that scans, executes, and pushes results, and demonstrates client configuration using CherryStudio.
This article provides a comprehensive overview of the HTTP protocol, covering its fundamental concepts, the complete request lifecycle—including DNS resolution, TCP handshake, request headers, methods, cookies, and tokens—and detailed server response structures with practical Spring Boot examples.
This article introduces the fundamentals of the HTTP protocol, explains its request and response structures, and provides a comprehensive guide to using Python's requests library for sending GET, POST, PUT, DELETE requests, handling headers, parameters, JSON responses, timeouts, and exceptions.
This article explains the fundamental differences between HTTP and HTTPS, how internet messages travel through DNS and routers, the roles of IP and MAC addresses, port conventions, request/response structures, encryption methods, digital certificates, and compares cookies with server‑side sessions for state management.
This article explains how TCP connection setup, slow‑start, delayed acknowledgments, the Nagle algorithm, TIME_WAIT and file‑descriptor limits affect HTTP performance, and shows how to tune Nginx and Linux keep‑alive settings to achieve faster, more reliable web traffic.
This article narrates the messy history of API design, illustrating early AJAX conventions, the misuse of HTTP status codes, the challenges of maintaining Restful standards, ad‑hoc extensions, and the eventual abandonment of Restful in favor of a simplified POST‑centric approach, while highlighting practical lessons for backend developers.
This article explains the fundamentals of HTTP and HTTPS, detailing how web requests travel across the internet, the roles of IP and MAC addresses, port numbers, request and response structures, encryption methods, digital certificates, and the differences between cookies and sessions.
The article reviews Alova.JS, a lightweight, declarative HTTP request library, comparing its features, size, performance, and ecosystem against the widely used Axios, and provides step‑by‑step guidance on installation, configuration, and usage in modern frontend projects.
