BestHub
Sign in
Tech Freedom Circle
Author

Tech Freedom Circle

Crazy Maker Circle (Tech Freedom Architecture Circle): a community of tech enthusiasts, experts, and high‑performance fans. Many top‑level masters, architects, and hobbyists have achieved tech freedom; another wave of go‑getters are hustling hard toward tech freedom.

109
Articles
0
Likes
207
Views
0
Comments
Recent Articles

Latest from Tech Freedom Circle

100 recent articles max
Tech Freedom Circle
Tech Freedom Circle
Dec 30, 2025 · Backend Development

How Java Virtual Threads Supercharge Spring Boot: 3× QPS Boost and 67% Memory Savings

This article explains how Java's new virtual threads (Project Loom) can transform Spring Boot applications, delivering up to three‑fold QPS improvements and up to 67% lower memory usage, by replacing heavyweight platform threads with lightweight coroutine‑style execution, and provides detailed comparisons, benchmarks, code samples, and migration guidance.

JavaPerformanceProject Loom
0 likes · 51 min read
How Java Virtual Threads Supercharge Spring Boot: 3× QPS Boost and 67% Memory Savings
Tech Freedom Circle
Tech Freedom Circle
Dec 20, 2025 · Backend Development

How SpringBoot Loads Classes: Deep Dive into ClassLoaders and Bean Creation

This article dissects the SpringBoot class‑loading mechanism, explaining how the JVM parent‑delegation model is selectively overridden with custom class loaders like LaunchedURLClassLoader and RestartClassLoader, and how these changes integrate with Spring's bean lifecycle, auto‑configuration, and practical troubleshooting techniques.

AutoConfigurationDependency InjectionDevTools
0 likes · 37 min read
How SpringBoot Loads Classes: Deep Dive into ClassLoaders and Bean Creation
Tech Freedom Circle
Tech Freedom Circle
Dec 17, 2025 · Backend Development

Thread Pool: Shared vs Exclusive – How to Choose the Right Strategy for Critical Java Services

This article dissects the interview question “Should thread pools be shared or exclusive?” by exposing common pitfalls, presenting a systematic analysis of isolation versus reuse, and illustrating best‑practice designs with concrete RocketMQ examples, code snippets, and decision‑making guidelines.

Java concurrencyThread Poolisolation
0 likes · 22 min read
Thread Pool: Shared vs Exclusive – How to Choose the Right Strategy for Critical Java Services
Tech Freedom Circle
Tech Freedom Circle
Dec 14, 2025 · Interview Experience

Interview Is Acting: Must‑Know Answers to Ace Every Question

This comprehensive guide turns interview preparation into a performance, offering a step‑by‑step "now‑past‑future" script for self‑introductions, STAR‑based storytelling for challenging projects, concrete Java OOM troubleshooting examples, and proven tactics for answering why you left, strengths, pressure handling, and salary expectations.

OOMSTARcareer
0 likes · 28 min read
Interview Is Acting: Must‑Know Answers to Ace Every Question
Tech Freedom Circle
Tech Freedom Circle
Dec 13, 2025 · Backend Development

What’s Wrong with Delayed Double Delete? How Top Tech Companies Elegantly Avoid It

The article explains the delayed double‑delete cache‑invalidation pattern, its four major drawbacks in high‑concurrency environments, and presents four production‑grade alternatives—event‑driven binlog updates, distributed‑lock with versioning, write‑through proxy layers, and logical‑delete with async cleanup—used by leading Chinese internet firms to achieve reliable data consistency.

CachingRedisVersioning
0 likes · 21 min read
What’s Wrong with Delayed Double Delete? How Top Tech Companies Elegantly Avoid It
Tech Freedom Circle
Tech Freedom Circle
Dec 12, 2025 · Backend Development

Why Redisson’s Reentrant Distributed Lock Relies on HINCRBY Increment and Decrement

The article explains how Redisson implements a re‑entrant distributed lock using Redis hash structures and the atomic HINCRBY command to manage client identity, re‑entry counting, concurrency safety, and graceful release, providing a complete technical analysis with code, Lua scripts, and best‑practice guidelines.

ConcurrencyHINCRBYJava
0 likes · 34 min read
Why Redisson’s Reentrant Distributed Lock Relies on HINCRBY Increment and Decrement
Tech Freedom Circle
Tech Freedom Circle
Nov 28, 2025 · Databases

How to Achieve MySQL Sub‑Second Scaling for 100M‑10B Rows (Interview Scenario)

The article analyzes a JD interview question on scaling a MySQL order table from 100 million to billions of rows, detailing four practical expansion strategies—stop‑service migration, double‑write migration, ShardingSphere middleware, and dual‑VIP routing—each with step‑by‑step procedures, code samples, risk assessments, and validation methods to enable near‑instant capacity growth without service interruption.

MySQLShardingSpheredatabase scaling
0 likes · 42 min read
How to Achieve MySQL Sub‑Second Scaling for 100M‑10B Rows (Interview Scenario)