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Architect's Must-Have
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Architect's Must-Have

Professional architects sharing high‑quality architecture insights. Covers high‑availability, high‑performance, high‑stability designs, big data, machine learning, Java, system, distributed and AI architectures, plus internet‑driven architectural adjustments and large‑scale practice. Open to idea‑driven, sharing architects for exchange and learning.

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Recent Articles

Latest from Architect's Must-Have

45 recent articles
Architect's Must-Have
Architect's Must-Have
Jun 6, 2025 · Backend Development

How to Secure API Calls with Tokens, Timestamps, and Signatures in Spring Boot

This article explains practical methods for protecting data exchanged with third‑party systems by using access tokens, timestamps, cryptographic signatures, and anti‑duplicate‑submission techniques, and provides complete Spring Boot code examples for token generation, validation, Redis storage, and request interception.

API securityBackend DevelopmentSpring Boot
0 likes · 24 min read
How to Secure API Calls with Tokens, Timestamps, and Signatures in Spring Boot
Architect's Must-Have
Architect's Must-Have
Jun 6, 2025 · Backend Development

Why Simple synchronized Locks Fail in Distributed Systems and How Redisson Fixes Them

This article examines common pitfalls of using single‑machine synchronization and basic SETNX locks for high‑concurrency stock‑deduction scenarios, demonstrates step‑by‑step improvements—including lock expiration and Redisson’s Lua‑based implementation—and discusses trade‑offs between Redis and Zookeeper for distributed locking.

Redisdistributed-lockredisson
0 likes · 16 min read
Why Simple synchronized Locks Fail in Distributed Systems and How Redisson Fixes Them
Architect's Must-Have
Architect's Must-Have
May 16, 2025 · Databases

Understanding Database Indexes: Structures, Types, and Trade‑offs

This article explains the fundamentals of database indexes, covering their purpose, underlying structures such as hash tables, B‑Tree and B+‑Tree, the advantages and drawbacks, and the various index types in MySQL including clustered, non‑clustered, primary, secondary, unique, prefix, and full‑text indexes.

B-treeMySQLhash
0 likes · 9 min read
Understanding Database Indexes: Structures, Types, and Trade‑offs
Architect's Must-Have
Architect's Must-Have
May 7, 2025 · Backend Development

How ReentrantLock Works: Inside Java’s AbstractQueuedSynchronizer

This article dissects Java’s ReentrantLock implementation, detailing its delegation to AbstractQueuedSynchronizer, the lock acquisition process, the role of non‑fair and fair sync subclasses, the internal CLH queue mechanics, and how unlocking is handled, while comparing Lock with synchronized.

AbstractQueuedSynchronizerJavaLock
0 likes · 14 min read
How ReentrantLock Works: Inside Java’s AbstractQueuedSynchronizer
Architect's Must-Have
Architect's Must-Have
May 7, 2025 · Operations

10 Powerful Bash Scripts to Automate System Tasks

This article presents ten advanced Bash script examples that automate common system administration tasks such as backups, resource monitoring, updates, database dumping, FTP uploads, log keyword alerts, report generation, service recovery, temporary file cleanup, and network status checking.

AutomationShell ScriptingSystem Administration
0 likes · 5 min read
10 Powerful Bash Scripts to Automate System Tasks
Architect's Must-Have
Architect's Must-Have
Mar 18, 2025 · Backend Development

Why Netty Uses FastThreadLocal and How It Outperforms JDK ThreadLocal

This article explains the motivation behind Netty's FastThreadLocal, details its internal design using an indexed array to avoid hash collisions, analyzes the core source code of InternalThreadLocalMap, FastThreadLocalThread, and FastThreadLocal, and discusses performance implications and reclamation strategies.

FastThreadLocalJavaMemory Management
0 likes · 10 min read
Why Netty Uses FastThreadLocal and How It Outperforms JDK ThreadLocal