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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

85 recent articles
JavaGuide
JavaGuide
Oct 16, 2025 · Backend Development

Why Upgrading from Java 8 to Java 21 Boosts Development Efficiency

The article walks through the evolution from Java 8 to Java 21, comparing preview and standard features such as pattern‑matching instanceof, switch expressions, text blocks, the new HttpClient API, var type inference, virtual threads, records, immutable collections, improved try‑with‑resources, sequenced collections, and garbage‑collector enhancements, illustrating each with concrete code examples and practical recommendations.

JavaJava 21Text Blocks
0 likes · 16 min read
Why Upgrading from Java 8 to Java 21 Boosts Development Efficiency
JavaGuide
JavaGuide
Oct 8, 2025 · Databases

Is MySQL Now the Runner‑Up to PostgreSQL in the AI Era?

While MySQL has long dominated relational databases with its open‑source stability and massive user base, the rise of AI and PostgreSQL’s extensible ecosystem—highlighted by extensions like pgvector, pg_bm25, TimescaleDB and PostGIS—are shifting developer preference, as shown by the 2025 Stack Overflow survey.

AIDatabase ExtensibilityMySQL
0 likes · 6 min read
Is MySQL Now the Runner‑Up to PostgreSQL in the AI Era?
JavaGuide
JavaGuide
Sep 28, 2025 · Artificial Intelligence

JD Open‑Sources JoyAgent‑JDGenie: A Product‑Grade Java Multi‑Agent AI Platform

JD Cloud has released JoyAgent‑JDGenie, the first fully product‑grade open‑source Java multi‑agent system that bundles front‑end, back‑end, framework, engine and core agents, supports major LLMs, offers layered architecture, Docker or manual deployment, and showcases demos such as PPT generation and sales analysis.

AIDockerJava
0 likes · 6 min read
JD Open‑Sources JoyAgent‑JDGenie: A Product‑Grade Java Multi‑Agent AI Platform
JavaGuide
JavaGuide
Sep 27, 2025 · Cloud Computing

Alibaba Cloud OSS Browser 2.0: New UI and Features Compared to 1.0

The article reviews Alibaba Cloud's OSS Browser 2.0, highlighting its refreshed interface, three login options, batch and folder upload up to 10 GB, online preview/edit capabilities, and compares its stability and usability against the older 1.0 client that struggled on Windows Server.

Alibaba CloudGUI clientOSS
0 likes · 4 min read
Alibaba Cloud OSS Browser 2.0: New UI and Features Compared to 1.0