Focused on software development, sharing source code and tutorials for various systems.
This guide shows how to leverage IntelliJ IDEA's diagram feature to visualize inheritance and interface relationships of Java classes, prune irrelevant nodes, inspect members, filter visibility, add additional classes, and quickly jump to source code, making code navigation far more efficient.
The article analyzes why many leading Chinese tech firms adopt PostgreSQL despite MySQL’s popularity, detailing PostgreSQL’s richer data types, native sequence support, extensible ecosystem, advanced monitoring tools, robust replication, open‑source licensing, and MVCC implementation, while also acknowledging MySQL’s strengths in simple deployment and read‑heavy workloads.
This article explains how to build a real‑time online user counter by identifying users via tokens or browser fingerprints, storing them in a Redis sorted set, and using ZADD, ZRANGEBYSCORE, ZREMRANGEBYSCORE and ZREM commands to add, query, and clean the data.
This article walks through the complete development of a minimal Model Context Protocol (MCP) server using Spring Boot 3 and Server‑Sent Events, illustrating how OpenSpec drives the workflow from proposal and task breakdown to design, implementation, testing, and integration with Claude Code.
This article explains why Java generics were introduced, demonstrates how they improve type safety and reduce casting through concrete examples with generic classes, interfaces, collections, custom generic methods, and highlights common pitfalls such as generic arrays and static methods.
It describes a fully open‑source Bilibili‑style video platform built with SpringBoot backend and Vue frontend, detailing system demo screenshots, functional requirements (video playback, upload, user, interaction, community), tech stack choices, video processing pipeline, deployment steps, and code acquisition instructions.
The article analyzes why many enterprises continue using JDK 8 despite newer releases like JDK 25, examining compatibility issues, stability, learning costs, third‑party library support, performance trade‑offs, commercial licensing, and toolchain considerations while offering migration guidance.
Redis introduces a multithreaded query engine that keeps average latency under 10 ms while delivering up to 16× higher throughput for vector‑search workloads, enabling faster retrieval‑augmented generation (RAG) applications and outperforming pure vector databases and managed Redis services in benchmark tests.
This free tutorial walks you through installing Clawbot on Windows, macOS or Linux, adding the Feishu plugin, configuring Feishu app credentials, and using Clawbot to generate documents, while highlighting security risks and providing a GitHub reference.
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.
