This article presents ten essential JVM interview questions, covering the Java 8 memory model, object allocation flow, common GC algorithms and collectors, class‑loading mechanics, OOM and CPU‑spike troubleshooting, tuning parameters, and the differences among strong, soft, weak and phantom references.
This article explains the concept of RabbitMQ dead‑letter queues, the three conditions that turn a message into a dead letter, how to configure DLX and routing keys in Spring Boot, common pitfalls, a classic order‑timeout use case, and typical interview follow‑up questions.
This article breaks down the interview focus points for messaging middleware, explains RocketMQ's "Three High and One Rich" advantages—high throughput, reliability, consistency, and rich features—compares it with Kafka and RabbitMQ, presents six detailed reasons with code samples, a selection decision tree, common interview variants, memory mnemonics, and a concise conclusion for Java developers.
This guide breaks down the core differences between TCP and UDP—including connection handling, reliability, header overhead, transmission mode, and real‑world use cases—while providing interview focus points, concise answer tables, detailed analysis, common follow‑up questions, and handy mnemonics for Java developers.
This guide explains the browser same‑origin policy, why cross‑origin restrictions exist, and presents five practical solutions—including CORS, proxy servers, JSONP, postMessage, and WebSocket—along with detailed configuration examples, code snippets, performance tips, and common interview follow‑up questions.
This article provides a comprehensive technical guide for Java interviewers, detailing HTTP’s security flaws, how HTTPS resolves them through SSL/TLS encryption, certificate verification, and hybrid cryptography, and includes handshake steps, performance comparisons, common follow‑up questions, and concise memory mnemonics.
The article shares iFlytek's recent campus salary packages, then dives into a detailed Java interview guide covering Redis data types, key expiration handling, thread safety, ThreadLocal usage, MySQL covering and composite indexes, slow‑query analysis, and SQL‑injection prevention techniques.
The article introduces Microstrategy, a US‑based BI firm with a large Hangzhou R&D center, outlines its generous 9‑5‑style work environment, details the interview stages—including written test, technical and non‑technical rounds—and provides concrete advice on self‑introduction, project presentation, system design, Canal‑MySQL sync, XXL‑Job video transcoding, Redis, MongoDB, SQL injection, Java exceptions, OOP concepts, and interview puzzles.
The article analyzes job‑hopping statistics, explains why companies often underpay existing staff, and offers six actionable career strategies plus a detailed rundown of the Java and backend skills needed to succeed in top‑tier tech interviews.
