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Lin is Dream
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Lin is Dream

Sharing Java developer knowledge, practical articles, and continuous insights into computer engineering.

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Latest from Lin is Dream

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Lin is Dream
Lin is Dream
Jun 26, 2025 · Backend Development

Unveiling RocketMQ: How Messages Journey Through Storage, Delivery, and Expiration

This article systematically breaks down RocketMQ's core mechanisms—covering message roles, disk storage, push/pull delivery, expiration handling, retry queues, and cluster failover—so developers can understand every stage a message undergoes from creation to cleanup and ensure reliable, high‑performance messaging.

Distributed SystemsJavaMessage Queue
0 likes · 13 min read
Unveiling RocketMQ: How Messages Journey Through Storage, Delivery, and Expiration
Lin is Dream
Lin is Dream
Jun 25, 2025 · Backend Development

12 Essential RocketMQ Best Practices for Reliable Messaging

This article presents a comprehensive set of RocketMQ usage guidelines—including topic and tag conventions, producer and consumer group naming, key handling, logging, retry mechanisms, and cluster deployment recommendations—to help engineers build stable, high‑performance, and observable messaging systems in production environments.

Distributed SystemsMessage QueueRocketMQ
0 likes · 9 min read
12 Essential RocketMQ Best Practices for Reliable Messaging
Lin is Dream
Lin is Dream
Jun 24, 2025 · Backend Development

Master RocketMQ Console: From Zero to Full Monitoring in Minutes

This article walks you through installing and using the RocketMQ Dashboard to monitor topics, brokers, producers, consumers, and message details, explains common pitfalls such as client‑ID conflicts in Docker, and demonstrates how to troubleshoot consumption issues, TPS metrics, and dead‑letter handling.

DashboardJavaMessage Queue
0 likes · 9 min read
Master RocketMQ Console: From Zero to Full Monitoring in Minutes
Lin is Dream
Lin is Dream
Jun 20, 2025 · Backend Development

Unlocking RocketMQ: What Every SendResult Field Means

This article explains the composition of RocketMQ's SendResult object returned after a successful synchronous send, detailing each field such as sendStatus, msgId, offsetMsgId, messageQueue, and queueOffset, and provides practical examples and a full field‑by‑field breakdown for Java developers.

JavaMessage QueueRocketMQ
0 likes · 6 min read
Unlocking RocketMQ: What Every SendResult Field Means
Lin is Dream
Lin is Dream
Jun 19, 2025 · Backend Development

Master RocketMQ with Spring Boot: Complete Guide to Messaging APIs

This tutorial walks through integrating Alibaba's RocketMQ into a Spring Boot application, covering Maven dependencies, producer and consumer configurations, and detailed examples of synchronous, asynchronous, one‑way, delayed, ordered, transactional, request‑response, batch, and pull messaging APIs, along with best‑practice recommendations.

JavaMessage QueueMessaging API
0 likes · 21 min read
Master RocketMQ with Spring Boot: Complete Guide to Messaging APIs
Lin is Dream
Lin is Dream
Jun 17, 2025 · Fundamentals

Boost Your Coding Speed: Essential IntelliJ IDEA Keyboard Shortcuts

This guide compiles the most frequently used IntelliJ IDEA shortcuts for Windows/Linux and macOS, covering code editing, navigation, refactoring, project structure, and run/debug operations to dramatically improve development efficiency and reduce mouse reliance.

Development ToolsIntelliJ IDEAcode editing
0 likes · 6 min read
Boost Your Coding Speed: Essential IntelliJ IDEA Keyboard Shortcuts
Lin is Dream
Lin is Dream
Jun 13, 2025 · Backend Development

How to Seamlessly Integrate SFTP Upload/Download in Spring Boot

This guide walks you through adding SFTP capabilities to a Spring Boot application, covering Maven dependencies, configuration properties, a reusable SFTP helper class, service and controller layers for file transfer, optional ZIP compression, and practical tips like retries, multithreading, and scheduling.

BackendFileUploadJSch
0 likes · 9 min read
How to Seamlessly Integrate SFTP Upload/Download in Spring Boot
Lin is Dream
Lin is Dream
Jun 12, 2025 · Information Security

How to Securely Set Up a Restricted SFTP Account on Linux Using chroot

Learn step‑by‑step how to create a dedicated Linux SFTP user with chroot confinement, configure group permissions, set up a secure upload directory, adjust SSH settings, and restart the service to ensure the account can only upload files without shell access, following the principle of least privilege.

LinuxSFTPSSH
0 likes · 7 min read
How to Securely Set Up a Restricted SFTP Account on Linux Using chroot