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JavaGuide

Backend tech guide and AI engineering practice covering fundamentals, databases, distributed systems, high concurrency, system design, plus AI agents and large-model engineering.

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Recent Articles

Latest from JavaGuide

46 recent articles
JavaGuide
JavaGuide
Dec 2, 2025 · Interview Experience

Tuhu Auto’s 2023 Java Backend Salary & Interview Guide: 30k‑33k Packages and Key Technical Topics

The article details Tuhu Auto’s Shanghai Java backend compensation (30k‑33k monthly with 14.4‑month salary and 2‑3w signing bonus), outlines the company’s market position, and provides a comprehensive list of technical and HR interview questions covering JVM, concurrency, MySQL, Spring, DDD, distributed locking, rate limiting, and more.

BackendConcurrencyJVM
0 likes · 7 min read
Tuhu Auto’s 2023 Java Backend Salary & Interview Guide: 30k‑33k Packages and Key Technical Topics
JavaGuide
JavaGuide
Nov 27, 2025 · Backend Development

Xiaomi Java Interview Insights: Reflection, Dynamic Proxies, Redis & JWT

The article starts by highlighting Xiaomi's competitive software developer salaries, then provides a detailed Java interview guide covering reflection fundamentals, static vs dynamic proxies, SPI vs API, synchronization behavior, Redis caching strategies, and JWT authentication, complete with code examples and practical comparisons.

Dynamic ProxyJWTJava
0 likes · 25 min read
Xiaomi Java Interview Insights: Reflection, Dynamic Proxies, Redis & JWT
JavaGuide
JavaGuide
Nov 24, 2025 · Backend Development

Alibaba 2024 Backend Salary Ranges and Essential Interview Preparation Guide

The article details Alibaba's 2024 campus backend salary bands, compares them with peers, outlines the interview process and project presentation tips, and provides in‑depth technical tutorials on Redis Lua scripts, cache consistency, slow‑query logging, MySQL optimization, Java reflection, WebSocket vs polling, SSE, TCP/UDP, and HTTP vs HTTPS.

AlibabaBackendJava
0 likes · 24 min read
Alibaba 2024 Backend Salary Ranges and Essential Interview Preparation Guide
JavaGuide
JavaGuide
Nov 21, 2025 · Backend Development

Spring Boot 4.0 Released: Core New Features and Upgrade Guide

Spring Boot 4.0, built on Spring Framework 7.0, introduces HTTP Service Clients, native API versioning, full JSpecify null‑safety, Java 25 support, upgraded dependencies, Gradle 9 compatibility, Redis static master‑replica configuration, and drops Undertow, with migration advice to move through 3.5 first.

API VersioningGradle 9HTTP Service Clients
0 likes · 8 min read
Spring Boot 4.0 Released: Core New Features and Upgrade Guide
JavaGuide
JavaGuide
Nov 20, 2025 · Backend Development

iFlytek Salary Offers Revealed + Comprehensive Java Interview Prep

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.

Java interviewMySQLRedis
0 likes · 17 min read
iFlytek Salary Offers Revealed + Comprehensive Java Interview Prep
JavaGuide
JavaGuide
Nov 19, 2025 · Artificial Intelligence

Spring AI 1.1 Released: Explosive New Features for Java AI Development

Spring AI 1.1.0 arrives with a major overhaul, adding out‑of‑the‑box Model Context Protocol support, five‑mode prompt caching that can cut LLM costs by up to 90%, reasoning APIs, recursive advisors, a broadened model ecosystem, enhanced vector‑store and chat‑memory options, and richer observability integrations.

AI IntegrationJavaMCP
0 likes · 9 min read
Spring AI 1.1 Released: Explosive New Features for Java AI Development
JavaGuide
JavaGuide
Nov 17, 2025 · Backend Development

How Spring Boot 4’s JSpecify Eliminates NullPointerExceptions

Spring Boot 4 adopts JSpecify’s null‑safety annotations, replacing JSR‑305, to make nullability explicit at compile time; using @NullMarked and @Nullable with tools like NullAway, developers can catch potential NPEs early, reduce defensive checks, improve API contracts, and handle collections and parameters more safely.

@NullableJSpecifyJava
0 likes · 13 min read
How Spring Boot 4’s JSpecify Eliminates NullPointerExceptions
JavaGuide
JavaGuide
Nov 16, 2025 · Backend Development

ByteDance Backend Interview: Java OOM, ThreadPool Tuning, Redis & MQ

ByteDance’s recent salary announcements show higher offers up to 40K, while the company’s rigorous backend interview covers Java heap OOM analysis, JVM tuning, thread‑pool configuration, Redis expiration strategies, MQ usage, network request flow, and algorithm challenges, providing a comprehensive technical deep‑dive for candidates.

JVMJavaMessageQueue
0 likes · 24 min read
ByteDance Backend Interview: Java OOM, ThreadPool Tuning, Redis & MQ
JavaGuide
JavaGuide
Nov 12, 2025 · Backend Development

Shopee Backend 2023 Salary Offers and In-Depth Interview Guide

Shopee’s 2023 backend positions offer competitive salaries ranging from 23.5k to 32k in Shenzhen, and the article provides a comprehensive interview guide covering network models, TCP handshake, HTTP/HTTPS differences, MySQL isolation levels, foreign keys, slow query optimization, JWT authentication, RBAC, and Redis sorted sets.

BackendJWTMySQL
0 likes · 31 min read
Shopee Backend 2023 Salary Offers and In-Depth Interview Guide