Su San, former staff at several leading tech companies, is a top creator on Juejin and a premium creator on CSDN, and runs the free coding practice site www.susan.net.cn.
This guide walks you through installing the lightweight Elasticvue GUI, configuring an Elasticsearch cluster, creating and mapping an index via the built‑in REST console, adding sample documents, and browsing the index data, providing a practical alternative to the heavier Kibana tool.
IntelliJ IDEA 2025.3 introduces a unified, 30% smaller edition, quieter development workflow, full Spring Framework 7 and Spring Boot 4 support, enhanced language features for Java, Kotlin and Scala, improved Git integration, terminal and build‑tool optimizations, plus performance upgrades for large web projects.
WeKnora is an open‑source Tencent framework that leverages large language models, multimodal parsing and hybrid retrieval to let users query PDFs, Word files, images and other complex documents with natural language, offering a web UI, API and secure private‑cloud deployment options.
Learn a practical approach to count online users in real time by leveraging Redis sorted sets (zset) with SpringBoot, covering user identification via tokens or browser fingerprinting, key Redis commands (zadd, zrangeByScore, zremrangeByScore, zrem), and scheduled cleanup logic.
This article examines the common data‑consistency problems that arise when updating both a database and a cache under high concurrency, evaluates four typical write‑order strategies, and presents the most reliable solution—writing to the database first and then safely invalidating the cache using retry, scheduled tasks, MQ, or binlog listeners.
Maven 4 introduces a revamped POM model, native flattening, explicit artifact types, subproject support, a tree‑based lifecycle and richer configuration options, enabling faster, cleaner, and more predictable builds for Java projects that have evolved dramatically over the past fifteen years.
This tutorial walks through configuring Canal in cluster mode, enabling MySQL binlog, creating an Elasticsearch index, setting up RocketMQ topics, adjusting Canal properties and instance files, launching services, and implementing a consumer to reliably synchronize MySQL changes into Elasticsearch.
Learn step-by-step how to undo mistakenly pushed commits in Git, covering manual diff deletion, the recommended 'git revert' command, creating a new branch for large rollbacks, using 'git reset' with soft/mixed/hard/keep options, and safely force‑pushing the corrected history.
Learn how to rapidly generate high‑quality flowcharts, architecture diagrams, and SVG graphics in under three minutes using AI text‑to‑image tools like Claude‑3.7‑sonnet, PlantUML, Mermaid, Graphviz, Obsidian Canvas, and draw.io, with step‑by‑step prompts, configuration tips, and editing tricks.
This article presents ten practical guidelines for writing clean, consistent, and performant logs in Java applications, covering unified formatting, stack traces, appropriate log levels, complete parameters, data masking, asynchronous logging, dynamic log level control, trace ID propagation, structured JSON storage, and intelligent monitoring with ELK.
