Dedicated to sharing IoT cloud services, embedded systems, and mobile client technology, with no spam ads.
This article walks through the design of a unified multi‑account login system, covering phone‑number registration, password‑optional login, third‑party integration, database schema separation, pros and cons, and a one‑click carrier‑based authentication flow.
This article walks through building a simple Netty server integrated with Spring Boot and WebSocket, showing how to configure the server, manage channel groups, implement custom handlers, and expose a service that can push messages to individual users or broadcast to all connected clients.
This guide compiles more than 100 of the most practical and frequently used Windows Command Prompt commands, grouped into eight functional categories such as file management, system information, disk maintenance, network diagnostics, process control, batch scripting, user security, and handy utilities, each with a brief description and a concrete usage example.
This article walks through the design and implementation of a TCP long‑connection communication scheme using Netty and Spring Boot 2.2.0, covering project architecture, module layout, message flow, detailed code explanations, testing procedures, and deployment considerations.
This article explains what servers are, compares them with personal computers, outlines their physical classifications, architectural types, rack unit measurements, front and rear panel features, internal components—including RAID cards—and details key parameters such as brand, model, serial number, asset ID, and configuration.
This article walks through sixteen common Redis scenarios—including caching hot data, sharing state across services, implementing distributed locks, generating global IDs, counting events, rate limiting, bitmap statistics, shopping carts, timelines, message queues, lotteries, likes, tagging, product filtering, and leaderboards—each illustrated with concrete commands and code snippets.
This guide shows how to integrate asyncTool into a Spring Boot project, configure custom thread pools, define core interfaces, and compose serial, parallel, or mixed task flows with full‑link callbacks, fault tolerance, and performance optimizations for complex multi‑threaded orchestration.
This article walks through more than ten common Redis scenarios—including caching, distributed sessions, locks, global IDs, counters, rate limiting, bitmap statistics, shopping carts, timelines, message queues, lotteries, likes, product tagging, filtering, follow/fan relationships, and ranking—showing concrete command examples and code snippets for each.
This article reviews ten open‑source Linux network monitoring utilities that run from the terminal—ideal for SSH‑based management—detailing each tool's purpose, key features, and typical usage scenarios to help administrators choose the right solution for their environment.
This article reviews ten essential Linux network monitoring utilities—iftop, vnstat, iptraf, Monitorix, dstat, bwm‑ng, ibmonitor, htop, and Wireshark—explaining their features, typical use cases, and how they help administrators keep network traffic under control via the command line, especially when working over SSH.
