Focused on Java technologies: SSM, the Spring ecosystem, microservices, MySQL, MyCat, clustering, distributed systems, middleware, Linux, networking, multithreading; occasionally covers DevOps tools like Jenkins, Nexus, Docker, ELK; shares practical tech insights and is dedicated to full‑stack Java development.
This guide walks through configuring a Redis vector database with Spring AI, adding the vector store advisor for retrieval-augmented generation, ingesting documents via ETL pipelines, and testing the RAG flow with a sample conversation.
This article explores hidden pitfalls in Java's Collectors.toMap including duplicate key exceptions, null value handling limitations, null key behavior, and null list safety, providing practical workarounds like merge functions and Optional-based null handling for robust stream-to-map conversions.
This article analyzes MyBatis sharding execution principles through ShardingSphere source code, explaining how logical tables map to physical tables, why three-table joins fail without sharding keys in WHERE clauses, and how to debug routing issues.
This article analyzes 11 classic dynamic programming problems including coin change, edit distance, LCS, LIS, maximum subarray, matrix chain multiplication, 0-1 knapsack, constrained shortest path, tiling with state compression, work allocation, and three-pass apple picking, providing recurrence relations, C implementations, and optimization techniques.
This article details the implementation of a generic @UserPermission annotation for horizontal authorization in Java web applications, covering annotation design, AOP-based interception, reflection-based parameter extraction, and compile-time validation using JDK8 annotation processors to prevent configuration errors.
This tutorial walks through email protocols, third-party SMTP setup for Feishu and QQ, Spring Boot mail starter configuration, core JavaMailSender/MimeMessage/MimeMessageHelper relationships, and a complete email verification code implementation using Redis for storage and Thymeleaf for HTML templates.
Spring AI Alibaba Admin, Alibaba’s open‑source extension of Spring AI, addresses three major enterprise hurdles—inefficient prompt debugging, unreliable AI quality, and opaque production operations—by providing versioned prompt management, dataset lifecycle control, flexible evaluator configuration, automated experiment execution, and end‑to‑end observability.
Cursor 3 replaces the traditional code editor with an AI‑agent‑centric console, signaling a major shift in developer workflows, pricing, and market dynamics as AI‑driven tooling challenges the dominance of VS Code and other classic IDEs.
A recent graduate shares how joining a bank's technology division turned out to involve mostly Excel work, legacy mainframe code, and outsourced implementations, leaving little technical growth and causing anxiety about losing the ability to switch jobs.
Cursor 3 replaces the traditional IDE with an AI‑agent management console, introduces Cloud Handoff, and signals a market shift as AI‑driven development tools like Anthropic’s Claude Code and OpenAI’s Codex compete, reshaping developer workflows, pricing models, and the future role of IDEs.
