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This tutorial walks you through creating a scalable, stateless authentication and authorization solution for Spring Boot 3.x applications using JWT, covering project setup, token generation, method‑level security, automatic token renewal, blacklist handling, and common troubleshooting tips.
This tutorial walks through setting up ZLMediaKit via Docker, installing and configuring FFmpeg, creating a Spring Boot backend with stream configuration and service classes, and explains how to push and play live streams using RTMP, HTTP‑FLV, and HLS protocols.
This guide walks backend engineers through Nginx fundamentals, showing how to configure reverse proxy, load balancing, static file handling, rate limiting, IP black‑/whitelisting, and HTTPS encryption, plus step‑by‑step deployment commands to keep services stable and secure.
This article explains the three main server‑to‑client push techniques—polling, WebSocket, and Server‑Sent Events—detailing their principles, advantages, drawbacks, browser compatibility, and appropriate use cases, and provides complete Node.js and HTML demos for implementing SSE.
This tutorial walks you through installing and configuring Prometheus, Grafana, and various exporters to monitor servers, MySQL, RabbitMQ, Redis, and TiDB, covering architecture, data source setup, dashboard import, email alerts, and API key management for a robust monitoring solution.
This article explains why traditional if‑else payment routing is hard to maintain, demonstrates how Java enums combined with functional interfaces and the strategy pattern can centralize behavior, improve extensibility, and integrate cleanly with Spring, providing a robust, testable solution for payment channel selection.
This article explains common security risks in login interfaces—such as brute‑force attacks, MITM interception, and credential enumeration—and provides practical defenses including captcha, rate limiting, IP blocking, mobile verification, HTTPS encryption, and additional logging measures.
A real‑world story shows how adding Spring Cloud Sleuth and Zipkin to a microservice system reduced incident resolution from dozens of minutes to just 20, slashing troubleshooting effort by 40% and preventing endless overnight log digging.
This article explains how xxl-job uses Netty HTTP as its communication backbone, hides network details with dynamic proxies, processes tasks asynchronously via queues, and synchronously retrieves results through future‑response mechanisms, all illustrated with code snippets and a flow diagram.
This guide walks you through the complete WeChat mini‑program login flow, covering front‑end wx.login usage, back‑end code2Session exchange for openId and unionId, phone number retrieval, database schema design, API contracts, token generation, interceptor validation, and environment configuration.
