This article walks through applying the 4+1 view model to a B2C e‑commerce platform that handles over 100,000 daily orders and 5,000 QPS, covering logical, development, process, physical, and scenario views with concrete diagrams, code snippets, and deployment details.
The article analyzes the delayed double‑delete cache‑consistency pattern, exposing how its fixed sleep interval, thread blocking, unreliable second delete, and inability to handle concurrent writes make it unsuitable for high‑traffic systems, and it proposes safer cache‑aside alternatives.
The article explains how using a for‑range loop to read from an unclosed Go channel can cause a goroutine to block forever, demonstrates the issue with a minimal example, compares explicit receives with for‑range, and shows that closing the channel is the only reliable fix, even for buffered channels.
The article explains why accepting request data as a Map in Spring Boot controllers harms readability, tool support, and validation, and demonstrates how replacing Map with a typed DTO improves code clarity, automatic validation, and API documentation.
This article explains how SpringBoot loads external configuration sources, outlines the exact priority order—from runtime arguments to bootstrap files—covers differences between SpringBoot 2.x and 3.x, and provides practical examples and troubleshooting tips for resolving configuration conflicts.
This article walks through building a production‑grade webhook system with Spring Boot 3.5, covering webhook fundamentals, a decoupled event‑driven architecture, database schema, entity and repository definitions, a dispatcher service with HMAC signing, exponential‑backoff retry, asynchronous execution, and dead‑letter handling.
This guide shows how to install the gvu CLI, add a Go module vanity import path using the default gomod.io domain or a custom domain, configure GOPRIVATE, use the path in go.mod, handle monorepo subdirectories, manage routes, and understand account quotas, all without writing Nginx or YAML configurations.
This article walks through adding a zero‑dependency human‑approval node to a Spring AI YAML‑DSL workflow engine, detailing the problem of critical business decisions, the JDK‑based pause‑and‑resume architecture, step‑by‑step code changes, best‑practice recommendations, and real‑world use cases such as large‑payment and content‑review approvals.
The article examines the drawbacks of deep if…else chains in Java business logic and introduces Easy Rules, a lightweight, annotation‑based rule engine that separates rules from code, improves readability, maintainability, testability, and supports multiple definition styles.
GitHub's recent update lets Claude act as an Agent Provider in JetBrains IDEs, turning IntelliJ IDEA from a code editor into an AI‑driven task console that can analyze, modify, and verify Java projects, while introducing new workflow risks and team‑level controls.
This article analyses Pi, a minimalist terminal‑based coding agent, comparing it with mainstream agents like Claude Code, Codex CLI, and OpenCode, and explains how its small core toolset, extensibility model, learning benefits, and security implications shape its practical value for developers.
This article walks through eight essential design patterns—Factory Method, Prototype, Adapter, Decorator, Observer, Strategy, Template Method, and Chain of Responsibility—showing concrete Spring Boot 3.5.0 code examples, explaining the problems each pattern solves, and highlighting their practical advantages for clean, extensible backend development.
This article explains why using @Value for configuration leads to scattered, unvalidated settings and demonstrates how Spring Boot's @ConfigurationProperties provides batch binding, nested object support, built‑in validation, default values, and starter integration for clean, maintainable configuration management.
Over five years the author refined an internal private Go module fetching system, only to discover when delivering the code to a client that the assumed network and trust boundaries broke, prompting the creation of a command‑line tool (gvu) to automate vanity import mapping and module distribution.
The article analyzes how AI coding agents like Claude Code, Codex, Cursor and ZCode can boost PR volume but not necessarily delivery value, urging Java teams to focus on workflow governance, risk management, cost tracking and staged rollouts rather than merely choosing a tool.
This article presents a comprehensive guide to building a production-grade SMS verification login system, covering threat modeling, multi-layer rate limiting, state management with Redis, asynchronous message handling, multi‑provider routing, token issuance and operational monitoring to ensure security, cost control, and high availability.
The article walks through creating a SpringBoot project from scratch, covering IDE setup pain points, project initialization, version compatibility between SpringBoot, Spring Cloud and Kafka, Maven dependency management, core scaffold classes such as global exception handling, logging aspect, CORS and Swagger configuration, and recommends useful tools like embedded Redis, MariaDB, Hutool, MyBatis‑Plus, MapStruct and Redisson.
The article explains the fundamental design flaws of java.util.Date—misleading name, mutability, non‑finality, timezone quirks, and legacy numbering—why a CTO may forbid its use, and provides a step‑by‑step guide to replace it with java.time classes such as Instant, LocalDateTime and ZonedDateTime.
This article provides a concise cheat‑sheet of the most frequently used Go commands—go build, go install, go get, go doc, godoc, go test, go list, and go fix—explaining each command’s purpose, typical usage, and key flags, with visual examples.
The SGLang team turned their benchmarking, profiling, CUDA kernel tuning, and production‑issue triage know‑how into reusable agent skills, merging three KDA‑Pilot PRs that delivered up to 2.75× kernel acceleration, a 71.4% throughput boost for Qwen3‑Next and a TTFT reduction from 456 ms to 168 ms, while outlining a repeatable workflow and practical rules for large‑scale performance engineering.
