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.
This article walks through creating a SpringBoot‑based electronic document signing and contract system, covering the problem background, project structure, Maven setup, key controller and service code, utility classes, deployment steps, and a step‑by‑step demo of drafting, approval, sealing and signing workflows.
The article explains how to replace outdated Swing/JavaFX UI by embedding a React application styled with shadcn/ui into a Java desktop program using JxBrowser, covering reliable web view setup, dev‑vs‑prod resource loading via a custom jxb:// scheme, and two Java‑to‑JS communication approaches (JS‑Java bridge and Protobuf + gRPC) with concrete code examples.
The article argues that while large‑model AI can quickly deliver an 80‑point prototype, the remaining 20 points needed for a reliable, secure, and performant product require human engineers—coined as “post‑processing engineers”—to handle boundary cases, errors, security, and performance, making this role essential in the AI era.
This article examines the challenges of managing user authentication across many corporate systems, explains traditional session mechanisms, explores session sharing solutions for clustered environments, and provides a detailed walkthrough of implementing single sign‑on using CAS with Java and Redis, including code samples and a comparison with OAuth2.
This article compares Spring AI 2.0 and Spring AI Alibaba, detailing their design philosophies, core architectures, recent upgrades, code examples, strengths, weaknesses, and ideal use‑cases, and explains how the two frameworks can be combined for enterprise AI solutions.
The article walks through four practical ways to roll back code that has already been pushed to a remote Git repository—manual copy‑and‑compare, using git revert, creating a new branch from the desired commit, and resetting the current branch—while highlighting the trade‑offs and safety considerations of each method.
The article explains that a gateway serves as the unified entry point of a microservice system, handling routing, authentication, rate limiting, logging and protocol conversion, compares architectures with and without a gateway, details Spring Cloud Gateway's core concepts, shows configuration and custom auth filter code, and contrasts it with Zuul, providing interview‑ready insights and sample questions.
A benchmark shows log4j2 can be roughly twice as fast as logback, especially when thread count approaches twice the CPU cores, while logging method names and line numbers significantly degrade throughput; the article explains the underlying reasons, testing setup, and provides practical configuration and usage guidelines for both frameworks in Java and Spring projects.
This article explains why the team replaced Nacos with Ctrip's open‑source Apollo configuration center, outlines Apollo's core concepts, features, and architecture, and provides step‑by‑step instructions for creating projects, testing dynamic updates, exploring environments, clusters, namespaces, and deploying a SpringBoot application on Kubernetes.
The article walks through creating a SpringBoot project from scratch, covering IDE setup pain points, project initialization, version compatibility between SpringBoot, Spring Cloud and Kafka, Maven dependency management, core scaffold classes such as global exception handling, logging aspect, CORS and Swagger configuration, and recommends useful tools like embedded Redis, MariaDB, Hutool, MyBatis‑Plus, MapStruct and Redisson.
