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Latest from Dunmao Tech Hub

32 recent articles

Dunmao Tech Hub

Sep 4, 2025 · Fundamentals

How to Implement a Forest Fire Spread Model in Java: Step‑by‑Step Guide

This article documents a Java implementation of a forest fire spread algorithm based on Wang Zhengfei's model, detailing the purpose, parameter definitions, and a series of computational methods—including wind and slope corrections, flame intensity, coordinate conversion, and spread speed—while noting the limitations of default parameter values.

Environmental ModelingForest Fire SimulationGeospatial

0 likes · 8 min read

How to Implement a Forest Fire Spread Model in Java: Step‑by‑Step Guide

Dunmao Tech Hub

Sep 1, 2025 · Artificial Intelligence

Deploy DeepSeek‑r1 Locally with a One‑Click Ollama Script

This guide walks you through a Bash script that automatically checks for Ollama, installs it if missing, lets you choose a DeepSeek‑r1 model size, starts the Ollama service, and runs the selected model locally, complete with usage examples and a token‑cost note.

AIDeepSeekLocal Deployment

0 likes · 7 min read

Deploy DeepSeek‑r1 Locally with a One‑Click Ollama Script

Dunmao Tech Hub

Aug 31, 2025 · Fundamentals

Boost Your Productivity with Essential IntelliJ IDEA Shortcuts & Plugins

Learn how to accelerate Java, Kotlin, Python, and JavaScript development in IntelliJ IDEA by mastering key shortcuts, multi-cursor editing, code completion, Find Action, VCS integration, and by installing productivity-boosting plugins such as Lombok, Rainbow Brackets, Key Promoter X, CheckStyle-IDEA, GitToolBox, and String Manipulation.

IDE shortcutsIntelliJ IDEAJava development

0 likes · 8 min read

Boost Your Productivity with Essential IntelliJ IDEA Shortcuts & Plugins

Dunmao Tech Hub

Aug 29, 2025 · Backend Development

Quickly Build a Video RTSP Streaming Service with Zlm4j and Spring Boot

This guide shows how to integrate the Zlm4j library into a Spring Boot project to quickly set up RTSP, RTMP, HTTP, and RTP streaming services, configure ports, handle authentication and stream state events, and test the setup with ffmpeg and VLC.

Media ServerRTSPSpring Boot

0 likes · 8 min read

Quickly Build a Video RTSP Streaming Service with Zlm4j and Spring Boot

Dunmao Tech Hub

Aug 25, 2025 · Operations

One-Click Linux Scripts to Install Rust, Tomcat, Docker, and Nginx

This guide provides four ready-to-use one‑click scripts for Linux that automate the installation of a Rust development environment, Tomcat 9 server, Docker engine, and Nginx web server, including supported distributions, usage steps, and post‑install considerations.

DockerRustinstallation

0 likes · 7 min read

One-Click Linux Scripts to Install Rust, Tomcat, Docker, and Nginx

Dunmao Tech Hub

Aug 23, 2025 · Information Security

How to Generate a CA Private Key, CSR, and Self‑Signed Certificate with OpenSSL

This guide walks through creating a CA private key, a certificate signing request, and a self‑signed CA certificate using OpenSSL, detailing each command's parameters, technical nuances, and essential security practices.

CACSRCertificate

0 likes · 5 min read

How to Generate a CA Private Key, CSR, and Self‑Signed Certificate with OpenSSL

Dunmao Tech Hub

Aug 21, 2025 · Fundamentals

Understanding Rust Borrowing: Multiple Immutable vs Single Mutable References

This article explains Rust’s core borrowing rules—allowing any number of immutable references, permitting only one mutable reference, and forbidding their coexistence—detailing the concept of lifetimes, providing code examples for each rule, and highlighting the safety benefits for concurrent programming.

BorrowingLifetimesMemory Safety

0 likes · 6 min read

Understanding Rust Borrowing: Multiple Immutable vs Single Mutable References

Dunmao Tech Hub

Aug 18, 2025 · Information Security

Understanding Ed25519 Key Generation, Signing, and Verification in Solana

This article explains how Ed25519 generates public keys, creates signatures, and verifies them within Solana, providing detailed algorithmic steps, code examples, and a complete Python reference implementation for developers to test and understand the cryptographic process.

Ed25519Public KeyPython

0 likes · 18 min read

Understanding Ed25519 Key Generation, Signing, and Verification in Solana

Dunmao Tech Hub

Aug 17, 2025 · Cloud Native

Step‑by‑Step Guide to Deploy SRS for RTMP‑to‑WebRTC with Docker and Nginx

This tutorial walks through deploying SRS in Docker, persisting its configuration, mapping required ports, customizing the rtmp2rtc.conf file, and optionally exposing the WebRTC signaling service via Nginx with HTTPS, providing all commands and configuration snippets needed for a successful setup.

HTTPSNginxRTMP

0 likes · 7 min read

Step‑by‑Step Guide to Deploy SRS for RTMP‑to‑WebRTC with Docker and Nginx

Dunmao Tech Hub

Aug 16, 2025 · Operations

Automate Linux Disk Cleanup with a Powerful Bash Script

This guide presents a comprehensive Bash script that safely automates Linux system‑disk cleanup by removing APT caches, temporary files, old kernels, logs, browser caches, Snap packages, Docker data, and locating large files, while providing before‑and‑after disk usage reports.

AutomationDisk CleanupLinux

0 likes · 10 min read

Automate Linux Disk Cleanup with a Powerful Bash Script