jdk-upgrade — 2 Technical Articles

Feb 3, 2026 · Backend Development

Why Companies Still Cling to JDK 8 After JDK 25? A Deep Technical Analysis

This article explores why many enterprises continue to run on JDK 8 despite newer releases, examining compatibility breaks, stability, learning costs, third‑party library support, performance trade‑offs, commercial considerations, and toolchain readiness, and offers practical guidance for migration decisions.

CompatibilityJDK8jdk-upgrade

0 likes · 14 min read

Why Companies Still Cling to JDK 8 After JDK 25? A Deep Technical Analysis

Xiaohongshu Tech REDtech

Jul 24, 2025 · Backend Development

How Xiaohongshu Boosted Java Performance by 10% with a RedJDK Upgrade

Xiaohongshu’s middleware team migrated thousands of Java services from JDK 8 to RedJDK 11/17, achieving over 10% performance gains, 50% GC pause reduction, and eliminating OOM crashes through systematic JDK upgrades, GC tuning, native‑memory improvements, and standardized deployment pipelines.

GC optimizationNative MemoryVirtual Threads

0 likes · 22 min read

How Xiaohongshu Boosted Java Performance by 10% with a RedJDK Upgrade

Why Companies Still Cling to JDK 8 After JDK 25? A Deep Technical Analysis

How Xiaohongshu Boosted Java Performance by 10% with a RedJDK Upgrade

Why Companies Still Cling to JDK 8 After JDK 25? A Deep Technical Analysis