Focused on Java interview questions and practical article sharing, covering algorithms, databases, Spring Boot, microservices, high concurrency, JVM, Docker containers, and ELK-related knowledge. Looking forward to progressing together with you.
The article explains how excessive if‑else logic in Java back‑ends harms code isolation and scalability, and demonstrates a practical workflow‑orchestration solution using a FlowChain engine, complete with configuration, node definitions, execution flow, and source code examples from the open‑source MemberClub project.
The article explains why ElasticSearch excels at full‑text search and analytics while MySQL remains the reliable storage engine, compares their underlying data structures, outlines real‑time write behavior, lists scenarios where ES should not be used, and describes a production double‑store architecture with asynchronous sync.
This article categorizes essential Linux commands for Java developers, explains why interviewers focus on real‑world usage, provides scene‑based command tables, demonstrates log‑analysis and performance‑monitoring workflows, and offers concise answers to common interview follow‑up questions.
The article presents NginxPulse, a lightweight Nginx log analysis panel built with Go, Gin, Vue3, and SQLite, explains how it compares to heavier solutions like ELK and GoAccess, and provides step‑by‑step Docker, Docker‑Compose, and single‑binary deployment instructions along with useful features such as multi‑site support, remote log fetching, custom log formats, and access control.
This article ranks the top ten Chinese internet giants by employee stability, detailing each company's layoff history, core business health, and offering practical tips for job seekers to select high‑stability positions based on core business focus, financial performance, and salary‑stability trade‑offs.
The article defines a time slice (time quantum) as the fixed CPU interval allocated to each ready process in a time‑sharing scheduler, explains its role in round‑robin and CFS algorithms, discusses size trade‑offs, Linux implementation details, context‑switch costs, and typical interview follow‑up questions.
FastExcel, the successor to EasyExcel, is now an Apache project offering high‑performance, low‑memory Excel read/write, streaming support, full API compatibility, PDF conversion, and detailed usage examples, making it a compelling choice for Java developers handling large Excel datasets.
The article explains how to avoid costly cloud servers by deploying FRP (Fast Reverse Proxy) in Docker containers on a modest local machine, detailing the setup of both server and client, configuration files, firewall rules, and verification steps to expose internal services to the public internet.
The article explains that CPUs act as a few powerful “professors” optimized for low‑latency single tasks, while GPUs are thousands of simple “students” built for high‑throughput parallel workloads, making GPUs ideal for cryptocurrency mining and large‑model training.
This article demonstrates how to use Java enums together with Spring Boot's @ConfigurationProperties to replace hard‑coded strings in application.yml, improving readability, reducing maintenance effort, and enabling flexible configuration of user types displayed via a Thymeleaf front‑end.
