This article walks readers through the complete process of creating an IntelliJ IDEA plugin—from installing the SDK and setting up a project, to defining actions, handling UI threads, using background tasks, and exploring core concepts such as VFS and PSI—providing practical code examples and references for further learning.
This article provides a detailed introduction to NestJS, a progressive Node.js framework, covering its modular design, core building blocks such as controllers, providers, and modules, and demonstrating how to implement middleware, pipes, guards, interceptors, and exception filters with practical TypeScript code examples and project structure recommendations.
This article provides a thorough overview of Java task scheduling, covering the native Timer utility, the thread‑pool‑based ScheduledExecutorService, and the powerful Quartz framework, including their APIs, usage patterns, limitations, and integration with Spring for enterprise applications.
This article outlines what senior Java interviewers at top internet companies ask, how to prepare for the two interview stages, and provides a detailed learning roadmap—from Java fundamentals to advanced JVM, concurrency, and career‑building strategies—for developers at any experience level.
This comprehensive guide outlines the essential technical and soft‑skill roadmap for programmers, covering computer fundamentals, data structures, Java basics, multithreading, JVM internals, databases, distributed systems, architecture, learning methods, personal branding, English importance, and ways to stay competitive.
This article explains how to monitor Redis memory usage with the INFO command, interprets key metrics such as used_memory, used_memory_rss, and mem_fragmentation_ratio, and dives into Redis's internal memory layout, including allocators, redisObject, SDS, and the various object types and their encodings.
This article outlines the expected work experience, job responsibilities, and technical skill requirements for Java engineers at junior (1‑3 years), mid‑level (3‑5 years), and senior (5‑8+ years) stages, summarizing the competencies needed to progress from basic development to architectural design.
This article explains Tomcat’s overall architecture, detailing the relationships among Server, Service, Connector, and Container, and describes how requests flow through ProtocolHandlers, Pipelines, and Valves to reach servlets and return responses.
Xianyu introduced a lightweight data‑aggregation service and adopted Alibaba’s TQL GraphQL gateway, allowing front‑ends to fetch multiple domain data in a single request, which cut development costs by over 50%, reduced latency, and accelerated page composition across more than 30 pages.
GraphQL, created by Facebook in 2012 and open‑sourced in 2015, offers a flexible, efficient alternative to REST by allowing clients to request exactly the data they need, reducing redundancy, cutting request counts, and simplifying API evolution, with practical Node server and Apollo client implementations illustrated.
This article outlines the progressive evolution of system architecture—from a single‑server LAMP setup through service and data separation, caching, clustering, read/write splitting, CDN, distributed storage, NoSQL, business decomposition, and finally distributed services with messaging, service frameworks, and governance—highlighting the motivations, characteristics, and challenges at each stage.
This article explains how Flask uses Jinja2 templates, covering template rendering, variable syntax, built‑in filters, inheritance, and demonstrates a complete schedule‑management example with CRUD operations, DataTables integration, and AJAX calls.
This article presents sixteen practical Spring Boot best‑practice recommendations—ranging from custom BOM dependency management and starter usage to clean controller design, service layering, externalized configuration, testing strategies, and logging—to help developers build maintainable, production‑grade Java micro‑services.
This article explains how to use Charles Proxy's Map Remote, Map Local, and Rewrite features to alter server responses for client testing, mock data, pagination, and special data handling, providing step-by-step instructions with screenshots for redirecting requests to other URLs, local files, or applying regex replacements.
This article explains how browsers handle CORS by distinguishing simple and non‑simple requests, the conditions that trigger a preflight OPTIONS request, the required Access‑Control response headers, and how server‑side implementations—such as Java interceptors—manage these interactions.
This article explains the concept of Inversion of Control (IoC), illustrates its implementation through a simple MVC library example, compares library versus framework approaches, and discusses how IoC enables flow control reversal, extensibility, and customization within backend application development.
This article analyzes common disagreements in designing an order status field for e‑commerce systems, explores business state modeling, evaluates dictionary representations, recommends using varchar2 with a separate dictionary table, and provides a comprehensive set of status values and their handling guidelines.
The article shares a developer's journey toward becoming a Java architect, highlighting common pitfalls such as over‑focusing on code, getting lost in component details, and neglecting reusability, while offering practical advice on mastering high‑concurrency architectures, component integration, and design patterns.
This tutorial walks you through configuring Django templates, static files, middleware, and MySQL database settings, then defines models for publishers, books, and authors, implements CRUD views and URL routing, and creates the necessary front‑end templates to build a complete library management application.
Spring Boot, introduced in 2013 to simplify Spring development, provides out‑of‑the‑box starter dependencies, reduces configuration and deployment complexity, and enables rapid creation of microservice‑ready Java applications, making it essential knowledge for modern backend developers.
Jason Fried’s multi‑year effort to migrate Facebook’s massive codebase from Python 2.7 to Python 3 illustrates the technical, cultural, and organizational challenges of large‑scale language adoption and the concrete strategies that finally made Python 3 the default at the company.
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 walks through creating a generic song‑parsing framework using Java's Service Provider Interface (SPI), showing the evolution from a hard‑coded parser to a modular, plug‑in architecture that supports adding new formats like MP3, MP4, and RMVB without changing core code.
This article explains the core concepts of distributed architecture, including cohesion and transparency, explores common applications such as distributed file systems, caches, databases, and middleware like MyCat, and outlines the evolutionary stages and challenges of building scalable distributed systems.
This article outlines practical techniques for enhancing Java service robustness, covering standardized response structures, thorough parameter validation, retry strategies, idempotent design, and functional programming with lambdas to reduce runtime errors and improve maintainability.
This article explains how a JavaEE project integrates JSP front‑end with Struts2, Spring, and MyBatis on the backend, describes the three‑tier architecture, the role of each layer, database communication with Oracle, and the evolution from classic MVC to Web 2.0 approaches.
This article explains what data streams are, how they differ from arrays, the types of streams in Node.js, demonstrates Java Stream operations, and introduces popular streaming platforms like Apache Kafka and Amazon Kinesis, highlighting their core features and real‑time processing capabilities.
This article outlines the critical knowledge points for backend developers, covering source code analysis, distributed systems, microservice architecture, performance tuning, Java engineering practices, and comprehensive concurrency programming techniques.
This article introduces five essential Laravel helper functions—data_get, str_plural, route, abort_if, and optional—explaining their usage with code examples, default values, wildcard support, URL generation, conditional exception handling, and safe property access to streamline backend development.
This article describes the background, analysis, solution selection, architecture redesign, execution steps, and results of a large‑scale order table splitting project that separates hot and cold data, applies horizontal sharding, and uses MySQL partitioning to control table size and boost query performance.
This article explains how to design and implement robust Java exception handling for business systems using Spring MVC, covering when to create custom exceptions, how to structure service and controller code, and how to centralize error responses with @ControllerAdvice for clean, maintainable backend development.
This article explains Node.js's internal architecture—including the standard library, bindings, V8 engine, libuv I/O library, code structure, event loop, and concurrency model—providing a comprehensive overview for developers who want to master backend development with Node.
This article introduces message queue middleware, explains its role in distributed systems for asynchronous processing, system decoupling, traffic shaping, log handling and message communication, and provides concrete e‑commerce and log‑collection examples illustrating how queues improve performance, scalability and reliability.
The June 2018 Ceph Developer Monthly Report reviews key changes such as the deprecation of ceph‑disk, the upcoming seastar‑based OSD, SMART‑driven disk‑failure prediction, new rbd namespace support, BlueStore memory optimizations, iWARP RDMA support, and several operational enhancements.
This article traces Spring's evolution, explains why Spring Boot was created to simplify configuration and deployment, outlines its core features, testing support, convention‑over‑configuration philosophy, and its relationship with Spring Cloud, providing a comprehensive guide for backend developers.
This article explains Spring Boot's core features, the role of @Conditional in automatic configuration, demonstrates custom condition classes and annotations, and walks through the source code of Spring Boot's auto‑configuration infrastructure, including @SpringBootApplication, EnableAutoConfigurationImportSelector, and class‑path condition evaluation.
This guide introduces Elasticsearch 6.3's native SQL support, demonstrates how to bulk‑load sample books, run SQL queries, apply ordering, limits, combine filters, translate SQL to ES DSL, and use the built‑in SQL client, providing a practical walkthrough for developers.
This article explores the origins of Spring Boot, its evolution from the Spring framework, key features, advantages for developers, and its relationship with Spring Cloud, illustrating how it simplifies Java backend development and addresses configuration complexity.
This article provides a detailed tutorial for creating a Spring Boot project with MyBatis, including environment setup, Maven dependencies, configuration files, database creation, MyBatis generator usage, and sample controller, service, and mapper code, enabling pagination with PageHelper and testing via HTTP requests.
This eight‑day tutorial introduces how to quickly set up a Django‑based backend administration system, covering required dependencies, installation commands, project creation, server launch, and verification steps, encouraging readers to practice each day and eventually build an automated front‑end data entry platform.
This article explains Kafka's role as a distributed message queue, covering its architecture, replication mechanisms, producer‑consumer workflow, message integrity guarantees, schema management, and performance tuning for high‑throughput, low‑latency backend systems.
This tutorial demonstrates how to quickly build a modern Java web application using Spring Boot, integrate MyBatis as the ORM, configure Redis as a second‑level cache, and write unit tests with H2, providing step‑by‑step code and configuration details for backend developers.
This article explains why high‑traffic scenarios like flash‑sale systems need rate limiting, compares token‑bucket and leaky‑bucket algorithms, and shows practical configurations for Tomcat, Nginx, and OpenResty to protect APIs and ensure system stability.
This article shares practical Java backend engineering advice—including module layout, code‑level conventions, SQL execution‑plan understanding, index usage, transaction handling, connection‑pool tuning—as well as personal work‑habit reflections and career‑development suggestions for developers.
Learn how to enhance PHP code quality by implementing unit tests using PHPSpec and PHPUnit, covering SOLID principles, mock objects, test setup, code coverage integration, and best practices for writing maintainable, reliable backend code.
This article explains a practical approach for managing common C source files shared by several applications by placing the shared code in a dedicated folder and using a Makefile that automatically discovers, compiles, and links both the common and application‑specific files, reducing redundancy and simplifying maintenance.
The article outlines the key characteristics of large-scale websites and traces their architectural evolution from single‑server setups to multi‑tier, cache‑enhanced, clustered, and distributed systems, highlighting strategies such as load balancing, database read/write separation, CDN usage, NoSQL adoption, and service‑oriented decomposition.
This guide outlines a complete Java learning path covering computer fundamentals, core Java concepts, JVM internals, database basics, design patterns, HTTP protocol, Spring framework, and advanced backend topics such as web services, distributed systems, and Hadoop.
This article provides a step‑by‑step tutorial on building a simple ThinkJS + Vue2 project with separate user and admin pages, covering directory layout, proxy setup, multi‑page webpack configuration, server routing, API creation, adding new pages, and production build deployment.
This comprehensive guide covers essential software development principles, processes, daily tools, runtime environments, third‑party services, data handling, Java language and JVM intricacies, system architecture evolution, and a typical deployment stack for building robust backend applications.
The article recounts Youzan’s transition from a Koa‑based internal system to the Astroboy framework—first version for decoupling code, then Astroboy 2.0 built on Koa2 with a customizable upper‑layer Base Framework, extensible plugins, and a Go‑based Tether proxy that streamlines Node‑to‑Java service integration and improves performance.
On May 17, 2018, Alibaba became the sole Chinese representative on the Java Community Process (JCP) Executive Committee, giving China a voice in shaping global Java standards, highlighting its extensive Java deployment across e‑commerce, finance, and logistics, and its open‑source contributions like AlibabaJDK, Dubbo, and RocketMQ.
This article outlines the fundamental Java SE concepts, servlet and JSP basics, HTML/JavaScript essentials, and the core SSH frameworks (Struts2, Spring, Hibernate) while providing interview questions and guidance on project modeling, design, and implementation for enterprise-level development.
This article introduces Lombok—a Java library that eliminates boilerplate code—by showing how to install it in IntelliJ, demonstrating the most common annotations with runnable examples, and revealing the annotation‑processing mechanism that generates the bytecode during compilation.
Learn how to set up a personal WeChat public account, configure a public platform test server on Alibaba Cloud, verify messages via Python and Tornado, and implement basic text, image, and QR‑code interactions using the official WeChat API, complete with code snippets and configuration details.
The guide by Tencent Cloud’s Huang Wenjun explains how to replace traditional servers with a serverless stack—API Gateway, cloud functions, and cloud database—to build scalable, low‑maintenance WeChat mini‑program backends, detailing login flow, billing, advantages, and common limitations.
This article compares placing business logic in SQL versus Java by presenting a concrete student‑score example, evaluating development speed, debugging, scalability, and maintenance, and concludes with recommendations for when each approach is appropriate.
This article explains how to design and implement a lightweight rule engine using condition‑based rules and a simple database schema, illustrated with a medical prescription recommendation example, and includes Java code that evaluates logical expressions to determine when to display results.
This article compiles and translates key information about HikariCP, detailing why Spring Boot 2 adopts it as the default JDBC pool, comparing its performance and stability against BoneCP, C3P0, Tomcat and Druid, and providing practical configuration steps for quick integration.
This article presents a concise Python example that demonstrates how to compose and send an email with a text body and a file attachment via the smtplib library, including MIME construction, encoding, and SMTP authentication steps.
This article explains how Spring Boot allows external configuration through various sources such as command‑line arguments, JNDI, system properties, environment variables, random values, property files, @PropertySource, and default properties, detailing their priority order and usage examples with code snippets.
This article shares practical techniques for writing and maintaining large numbers of automated API test cases in a Java Spring/Dubbo environment, covering faster execution by limiting service initialization, a three‑step test structure, data‑provider and factory optimizations, resource cleanup strategies, and stability improvements for CI pipelines.
This article explains Dubbo’s core RPC principles, architecture layers, design philosophy, open‑source growth, adoption by major enterprises, and upcoming plans for modularization, metadata, async support, and its progression through the Apache Incubator toward becoming a top‑level project.
This guide explains how to find QQ mail's POP3/SMTP server settings, enable the SMTP service in the QQ account, and provides a complete Python script that uses smtplib to send an email through QQ's SMTP server.
This comprehensive guide outlines a step‑by‑step roadmap for becoming a modern backend developer, covering language selection, hands‑on practice, package management, standards, security, testing, databases, frameworks, caching, APIs, authentication, messaging, Docker, web servers, sockets, GraphQL, and continuous learning.
This article presents a comprehensive, step‑by‑step roadmap for aspiring backend developers, covering language selection, tooling, best practices, security, databases, frameworks, testing, deployment, and continuous learning to help readers confidently master modern backend development.
This article analyzes the pain points of traditional operation‑backend development, proposes a cloud‑based generation platform that automates UI, database, and API creation, outlines its architecture and workflow, and shows how it reduces development cycles from days to minutes while standardizing style and resource usage.
This article provides a comprehensive introduction to essential Java backend technologies—including Spring MVC, Spring IoC/AOP, MyBatis, Dubbo, Maven, RabbitMQ, Log4j, Ehcache, Redis, Shiro—and outlines basic design‑pattern concepts, helping developers understand their roles, core mechanisms, and practical usage.
This article provides a comprehensive guide to installing and utilizing the Python-Jenkins library for automating build processes, retrieving job information, and managing continuous integration workflows through Jenkins server interactions.
This article offers comprehensive advice for recent graduates and junior programmers on gaining commercial project experience, setting clear career goals, mastering essential Java Core, Java Web, and database concepts, and presenting those skills effectively in resumes and interviews to increase hiring chances.
This article explains how to implement a shopping cart in Java by handling four login scenarios, defining BuyerCart and BuyerItem beans, using JavaScript and Spring MVC controllers to add items, persisting cart data in cookies or Redis, converting objects to JSON with ObjectMapper, managing sessions, and validating stock before checkout.
At GopherChina 2018, Didi engineer Shi Songran explained how Go powers the company’s high‑availability order, dispatch, and storage systems, detailing service‑governance practices, two production‑level bugs, and Didi’s open‑source contributions of the gendry database helper and the high‑performance json‑iterator codec.
This article explains microservice fundamentals, compares RPC/gRPC/HTTP/REST communication, evaluates Dubbo and Spring Cloud frameworks—including their architectures, features, advantages, and drawbacks—and discusses related technologies such as ZooKeeper, Eureka, and Service Mesh to help developers choose the right solution.
This article provides a step‑by‑step tutorial on building a Spring container, configuring Spring MVC with DispatcherServlet, setting up essential beans such as multipartResolver, custom handler mapping, handler adapter, view resolver, component scanning, and finally integrating MyBatis with SqlSessionFactoryBean and SqlSessionTemplate for a complete Java backend solution.
This technical article discusses implementing an automatic printing solution for e-commerce merchants using WebSocket and Netty frameworks to enable real-time order push notifications and reduce manual intervention in the order processing workflow.
This article explains the core concepts of NestJS—including modules, controllers, providers, guards, interceptors, and validation pipes—provides practical code examples, and describes how the Nesk fork adapts Nest's architecture to a Koa‑based environment for seamless integration with existing internal frameworks.
This article provides an in‑depth overview of Spring MVC annotations such as @Controller, @RequestMapping, @Autowired, @Resource, @ModelAttribute, @SessionAttributes, @PathVariable, and @RequestParam, explaining their purposes, configuration methods, attribute injection rules, and advanced usage with practical code examples.
This article explains the purpose of Survivor spaces in the JVM young generation, why a single Survivor area is insufficient, how having two Survivor spaces prevents memory fragmentation, and the copy algorithm that keeps one space empty while the other holds contiguous live objects.
This article provides a step‑by‑step guide to creating a Spring Boot project, explains core features such as embedded servlet containers and starters, demonstrates how to configure the main class, customize banners, manage properties, set up type‑safe beans, logging, and profile‑specific settings, all with runnable code examples.
This article explains how to correctly configure Maven dependencies for Spring 3 (and briefly for Spring 4), detailing the framework’s five module groups, their individual jars, dependency relationships, and providing ready‑to‑use XML snippets for both core and web projects.
This article reviews five proven Python web frameworks—Django, CherryPy, web2py, TurboGears, and Pylons—highlighting their key features, ease of use, and suitability for both beginners and seasoned developers, helping web developers choose the right tool for rapid, scalable application development.
This article reviews the most popular Java web frameworks, ranking Spring, JSF, and GWT at the top, introduces additional options like Play!, Struts, Vaadin, Grails, and provides sample code and setup instructions for each, helping developers choose the right tool for their projects.
The article outlines the challenges faced by JD’s Java Service Framework (JSF) amid rapid microservice growth and containerization, and presents a comprehensive, multi‑layer redesign—including infrastructure, service framework, system extension, and application layers—to transform JSF into a cloud‑native microservice platform.
This article traces Spring’s evolution from its early IOC/AOP roots to the rise of Spring Boot, explains the key features of Spring Boot 2.0, outlines Java version and dependency requirements, and provides practical guidance for migrating existing Spring Boot 1.x projects to 2.0.
This article examines the challenges of rule‑driven development at Meituan, compares hard‑coded, Drools‑based, and custom rule‑engine solutions, and presents the design of the Maze framework that separates decision logic, supports hot‑deployment, and improves maintainability and performance.
This tutorial explains how to modify Tomcat's server port, map virtual directories using various methods, configure virtual hosts, register domain names on Windows, and outlines the browser‑server interaction process and the standard structure of a JavaWeb application.
This article outlines the essential technical and soft‑skill competencies—including Java fundamentals, tooling, frameworks, cloud platforms, communication, problem‑solving, teamwork, and self‑learning—that developers need to master to advance from junior to senior Java engineer roles.
This article deep‑dives into Celery task fundamentals, covering how to instantiate tasks with @app.task, customize task names, use binding for self‑reference, implement retries, access request context, and extend tasks via inheritance, all illustrated with clear Python code examples.
This guide outlines the essential mindset, universal and specialized skills, website architecture evolution, core design principles, and a curated collection of tools, platforms, books, and resources that aspiring architects need to develop a systematic knowledge base and excel in modern software engineering.
Explore how to configure Celery’s periodic (Beat) tasks, perform synchronous task calls, persist results using Redis, monitor workers with Flower, and debug remotely via telnet, with practical code examples and step‑by‑step instructions for robust backend task management.
A programmer shares how he turned a lost stroller incident into a successful Twitter‑bot project, detailing the creation of a Cloud9 environment, Node.js bot, API configuration, and the surprising compensation he received, inspiring developers to apply coding skills to real‑world problems.
This article outlines the core professional skills, project experience, development processes, tools, interview questions, and negotiation tips that Java developers need to master to succeed in job interviews and advance from junior to senior positions.
Discover how modern PHP development has evolved with powerful tools like Composer, PHPUnit, Behat, and IDE integrations, while embracing best practices, PSR standards, micro‑frameworks, and continuous integration to boost productivity, code quality, and maintainability in today’s fast‑moving ecosystem.
This article explains why modern microservices need a client‑side discovery mechanism, how a Service Registry enables dynamic lookup of service instances, and outlines the advantages, drawbacks, and typical implementations such as Netflix OSS.
Monolithic architecture, built as a single deployable unit, offers rapid development, simple deployment, and easy scaling via load balancers, but as applications grow, it introduces codebase complexity, slower IDEs, deployment challenges, limited scalability, and technology lock‑in, prompting many teams to consider microservices.
This report details how integrating OSP Proxy as an SDK into the Netty‑based Janus gateway dramatically improves throughput, yet introduces a 100 KB payload memory‑leak bug, analyzes its root causes, and evaluates mitigation strategies such as connection and worker‑thread tuning.
This article introduces Celery, a flexible Python distributed task queue, explains its architecture—including broker, beat, worker, and result backend—then provides a complete, step‑by‑step setup using RabbitMQ and Redis, covering installation, configuration, task definition, worker launch, custom exchanges, and queue routing.
This article explains how Spring MVC uses annotations such as @RequestMapping, @PathVariable, @RequestParam and @CookieValue to map URLs, retrieve parameters, implement RESTful CRUD operations via hidden method filters, and provides complete code examples for each scenario.
This article presents a detailed case study of Hootsuite's serverless backend built on AWS Lambda, covering the motivation, design, AWS services used, constraints, authentication, full architecture, frontend integration, development workflow, advantages, and future plans.
This tutorial walks you through setting up a Spring Boot project with Spring Security, explains the @EnableWebSecurity annotation, shows how to extend WebSecurityConfigurerAdapter, demonstrates overriding configure(AuthenticationManagerBuilder) and configure(HttpSecurity) methods with concrete code examples, and provides a concise reference table of common HttpSecurity methods.
