A public account focused on workplace, career growth, team management, and self-improvement. The author is the writer of books including 'SpringBoot Technology Insider' and 'Drools 8 Rule Engine: Core Technology and Practice'.
This article examines common misconceptions about MySQL VARCHAR—why 255 was historically used, the real maximum length, performance differences between short and long definitions, character‑set impacts on storage, and why aligning sizes to powers of two offers no real benefit.
The article compares traditional rule‑engine architectures with AI‑driven models, explains their differing characteristics, outlines when deterministic rule matching is preferable over flexible AI inference, and recommends practical technologies such as Drools for rule‑based solutions and LLM‑based RAG/Agent frameworks for AI‑centric scenarios.
An in‑depth tutorial walks through the five core SQL language families—DDL, DML, DQL, DCL, and TCL—explaining their purposes, key commands, and practical examples, while highlighting differences and usage tips for database schema definition, data manipulation, querying, permission control, and transaction management.
This tutorial walks through preparing a CentOS 8 server, uninstalling any existing Docker packages, adding a Tencent Cloud mirror, installing and starting Docker, configuring a non‑root Docker user group, and finally pulling, configuring, and running an Nginx container with essential HTTPS settings.
This article explains the Server‑Sent Events (SSE) technology behind ChatGPT's streaming responses, compares SSE with WebSocket, outlines its core implementation steps, and provides a complete Spring Boot example for pushing live stock prices to browsers.
A seasoned Java engineer shares his journey transitioning to Rust, highlighting Rust’s advantages for CLI tools, superior resource utilization, easier concurrency and async programming, while also acknowledging Java’s strengths in rapid feature delivery, mature ecosystem, and ease of learning, and discussing practical migration considerations.
The article traces the evolution from monolithic applications to microservices and serverless architectures, outlines their benefits and pitfalls, proposes a balanced four‑component model, and shows how modern meta‑frameworks and BaaS solutions can dramatically reduce technical complexity.
This article surveys emerging database platforms such as PlanetScale, YugaByteDB, Dolt, CockroachDB, Cloudflare D1, Xata, SurrealDB, and FaunaDB, highlighting their architectures, features, pricing, and trade‑offs for developers seeking modern, distributed, or serverless solutions.
This article outlines ten practical REST API design guidelines—including meaningful resource naming, proper HTTP methods and status codes, versioning, consistent error handling, query parameters, authentication, statelessness, and thorough documentation—to help developers build robust, scalable backend services.
Learn how the CAP theorem defines the trade‑offs among consistency, availability, and partition tolerance, and see how different NoSQL databases such as MongoDB (CP) and Cassandra (AP) align with these principles to guide your choice of storage for cloud‑native, distributed applications.
