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.
This article presents a complete, step‑by‑step analysis of a high‑concurrency Redis counter component that supports up to 100 000 QPS, covering business pain points, architectural design, two core counting strategies, sharding, local batch optimization, code walkthroughs, and performance benchmark results.
The article examines the fundamental limitations of consistent hashing—its inability to preserve data locality, support range queries, and handle topology awareness—explaining why major storage systems such as Redis Cluster, TiDB, Ceph, and HBase have adopted alternative sharding strategies like hash slots, range partitioning, and CRUSH.
The article walks through a high‑traffic video service that suffered GC spikes, details a systematic diagnosis of three JVM configuration flaws, evaluates four GC tuning schemes across load scenarios, resolves CMS‑related pauses, and presents concrete performance gains with metrics, code snippets, and visual charts.
This article walks through a systematic emergency response for Redis outages, explains how Redis Cluster promotes a replica, quantifies the typical data‑loss window from hundreds of milliseconds to several seconds, and provides detailed persistence configurations (RDB, AOF, and hybrid) to minimise downtime and data loss.
The article explains what a GC spike (Garbage Collection Spike) is, analyzes its typical causes such as large short‑lived objects, memory leaks, and heap configuration, presents a real‑world high‑concurrency case study, and details step‑by‑step JVM tuning and architectural strategies that reduced latency spikes and raised service availability from 95% to over 99.99%.
This article provides a comprehensive technical guide covering Java bytecode structure, the seven-stage class lifecycle, JIT compilation, memory layout, garbage‑collection algorithms, execution engine details, and both static and dynamic bytecode enhancement techniques such as ASM, Javassist, and Java agents.
This article provides a deep dive into the five major enterprise architecture methodologies—TOGAF, Zachman, OEA, ITSA, and DODAF—explaining their core principles, step‑by‑step implementation processes, a detailed omni‑channel order and marketing platform case study, and a comparative analysis to help architects choose the right framework for their projects.
During a midnight promotion launch, a forgotten TODO caused thread‑pool exhaustion and frequent Full GC, bringing down an e‑commerce service; the article presents a five‑step end‑to‑end JVM tuning methodology, from data collection to root‑cause verification and code fix, showing how to diagnose and resolve such incidents.
The article explains the concept of AI‑native applications, distinguishes them from AI‑plugin extensions, outlines their core principles such as model‑first design, data flywheel, event‑driven agents, multimodal semantics, continuous learning, and provides a seven‑step practical guide with code examples for building an AI‑native app.
The article explains why RAGFlow needs end‑to‑end link tracing, introduces OpenTelemetry’s core concepts, shows how custom tracing utilities are implemented in Python, describes the layered architecture, provides concrete Docker and YAML configurations, and offers best‑practice guidelines for performance monitoring and fault diagnosis.
