Ansible Playbook Tutorial: YAML Syntax, Roles Structure, Task Execution, and Automated Deployment

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[AI Readability Summary] Ansible Playbooks turn scattered operations commands into repeatable automation workflows for deployment, configuration, and inspection. They solve the reuse, maintenance, and collaboration limits of ad-hoc commands. Keywords: Ansible Playbook, YAML, Infrastructure Automation. Technical Specifications Snapshot Parameter Description Language YAML Execution Tool ansible-playbook Communication Protocol SSH Applicable Targets Linux hosts, application services, database … Read more

Claude Opus 4.7 in China: Full Guide to Access, DeepSider Setup, and Major Capability Upgrades

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[AI Readability Summary] Claude Opus 4.7 is Anthropic’s latest flagship model, with major improvements in coding, visual understanding, long-horizon task execution, and instruction following. For users in China, where registration, payment, and access are often difficult, the DeepSider browser extension provides a practical way to use it directly. Keywords: Claude Opus 4.7, DeepSider, AI coding. … Read more

Spring Security RBAC with JWT: A Practical Guide to Stateless Authentication and Authorization

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This article explains how to implement RBAC with Spring Security and JWT. It focuses on user modeling, authentication filters, role-based authorization, and stateless session management to solve common issues such as scattered API permissions, hard-to-maintain login state, and poor extensibility. Keywords: Spring Security, RBAC, JWT. Technical specifications are summarized below Parameter Description Core language Java … Read more

2026 Agentic AI Trends Explained: From Tool Calling to Autonomous Decision-Making

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Agentic AI in 2026 is evolving from systems that can merely answer questions into enterprise-grade agent infrastructure that can execute, plan, and collaborate. This article distills seven major trends: tool orchestration, multi-agent systems, autonomous decision-making, context engineering, MCP, security and governance, and agent programming. Keywords: Agentic AI, MCP, Context Engineering. Technical Snapshot Parameter Details Domain … Read more

Agent Learning Roadmap: Start Fast and Level Up with Two Chinese Open Source Projects

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This roadmap is designed for Chinese developers learning Agents: learn-claude-code breaks down the essence of an Agent through a minimal loop and tool calling, while hello-agents fills in the bigger picture with a complete Chinese tutorial covering frameworks, protocols, and hands-on projects. Together, they address three common pain points: getting started, gaining practical experience, and … Read more

Redis Configuration and Optimization in Production: Security Hardening, Performance Tuning, and High Availability

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Redis is a high-performance NoSQL database widely used for caching, queues, and distributed locks. This article focuses on production-ready configuration and optimization practices that address common risks such as insecure default launches, uncontrolled memory usage, unstable persistence, and insufficient high availability. Keywords: Redis configuration, performance optimization, high availability. Technical Specifications Snapshot Parameter Description Language C … Read more

Linux Thread Synchronization in Practice: Condition Variables, Blocking Queues, and the Producer–Consumer Model Explained

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The core of Linux thread synchronization is not just thread safety. It is about establishing when a thread should access shared state on top of mutual exclusion. This article focuses on condition variables, blocking queues, and the producer–consumer model, explaining the atomic behavior of pthread_cond_wait, why while protects against spurious wakeups, and how semaphore-based designs … Read more

Docker Core Concepts and Competition Image Workflows: From Container Internals to Reproducible Submission Packaging

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Docker is a container platform for application packaging, isolation, and delivery. Its core value lies in eliminating environment drift and improving deployment efficiency. This article focuses on images, containers, registries, Dockerfiles, and hands-on competition image creation to solve the common problem of “it works in development, but cannot be reproduced at submission time.” Keywords: Docker, … Read more

HarmonyOS 6 Smart Home Development Guide: Build a Whole-Home Control System with Floating Navigation and Immersive Ambient Lighting

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This article focuses on the HarmonyOS 6 smart home control system, “Luminous Home,” whose core idea is to model rooms, navigation, and lighting effects as a unified interaction system. It addresses common issues in traditional smart home apps, such as frequent page switching, weak state feedback, and fragmented scene control. Keywords: HarmonyOS 6, floating navigation, … Read more