The article explains how reliability of storage, servers, and distributed systems is assessed using standards, models like MTBF/MTTR, RAS features, CAP/BASE theories, and end‑to‑end solutions, emphasizing the gap between theoretical metrics and real‑world operational data.
This talk traces the evolution of recommendation systems from early algorithm‑centric prototypes through a wild‑growth phase to a mature, architecture‑driven design, highlighting practical challenges, design principles, and lessons learned for building scalable, maintainable recommendation platforms.
This article explains how traditional ACID transactions fall short for modern large‑scale systems and presents lock‑free transaction methods, atomic and partial cache‑switch techniques, and a PostgreSQL‑style MVCC model for key‑value databases, including practical rules and trade‑offs.
The article examines how unpredictable "black‑swan" incidents caused by slow, high‑frequency queries can destabilize database systems and presents concrete MySQL optimization techniques for large pagination, join operations, and concurrent count(*) queries that reduced slow‑query volume by about ninety percent.
This article explains how microservices adopt decentralized governance, outlines service registration and discovery mechanisms, details Docker and Kubernetes deployment strategies, describes security using OAuth2/OpenID, discusses transaction handling and fault‑tolerance patterns such as circuit breaking and timeouts, providing practical guidance for building robust cloud‑native systems.
The article walks Android developers through the entire Gradle build pipeline—detailing resource merging and conflict resolution, AAPT compilation into binary resources, Java and AIDL processing, multi‑dex generation with ProGuard considerations, providing code examples for each stage.
This article explains what WebP is, its performance benefits, common server‑side and client‑side integration methods, and shares a complete practical implementation—including image conversion tools, JavaScript detection, CSS mixins, and a Node.js monitoring script—to help developers adopt WebP efficiently in their front‑end workflows.
This article explains what ANR is, outlines its three trigger conditions, describes the system's ANR execution flow, compares FileObserver and WatchDog monitoring techniques, shows how to analyze ANR logs and main‑thread stack traces, and provides practical guidelines to avoid ANR in Android applications.
This article explains Linux process management fundamentals, covering process concepts, lifecycle, threads, priority and nice values, context switching, interrupt handling, process states, memory segments, and the O(1) CPU scheduler, providing clear insights into kernel behavior and system performance.
This article shares real‑world Node.js pitfalls—from unsafe decodeURIComponent usage and hidden Promise errors to unhandled HTTP request failures—explaining why they occur and providing practical code‑level solutions such as try‑catch wrappers and proper error event handling to keep applications stable.
This guide walks through setting up a high‑availability HAProxy and Keepalived dual‑master configuration, detailing the experiment environment, installation steps, keepalived scripts, and testing procedures that ensure continuous service even if one node fails.
This guide explains how to restore accidentally deleted or incorrectly updated Oracle database rows using logical backups with import, physical backup with incomplete recovery, LogMiner analysis of redo logs, and the Flashback Query/DBMS_FLASHBACK features, detailing each step, required settings, and practical tips.
This talk walks through the evolution of databases, explains the challenges of building a distributed key‑value system that provides full ACID properties, and details the architectural components, sharding, migration, snapshot isolation, two‑phase commit, timestamp handling, and distributed transaction processing techniques.
This article explains the fundamentals of virtual reality, the optics behind head‑mounted displays, the different HMD categories, and how WebVR—especially the A‑Frame framework—enables developers to create immersive 3D experiences directly in web browsers.
Qihoo 360 shares how it grew from a 2011 MongoDB adopter to running over 1500 instances handling 200 billion queries per day, detailing its architecture, key applications, migration decisions, backup strategies, scaling best practices, and lessons for future MongoDB projects.
This guide outlines essential MongoDB naming conventions and planning strategies for databases and collections, highlighting common pitfalls, performance impacts of lock contention, and practical case studies on splitting databases and collections to improve scalability.
The article introduces the upcoming C# 7.0 language enhancements—including output variables, pattern matching, extended switch statements, tuples, deconstruction, local functions, numeric literal improvements, ref returns, new async return types, and throw expressions—explaining their syntax, usage, and current preview limitations.
PhxSQL is an open‑source, MySQL‑compatible relational database cluster that uses a Paxos‑based log store and a three‑layer architecture (Phxbinlogsvr, Phxsqlproxy, Phxsync) to provide automatic master failover, strong data consistency, and improved write performance compared to MySQL semi‑synchronous replication.
Design thinking is a human‑centered, iterative process—empathy, define, ideate, prototype, test—used by Adobe’s product team to create innovative, feasible, and valuable experiences like Adobe XD, emphasizing rapid learning, cross‑functional collaboration, and continuous user feedback.
The article summarizes Wu Zhihua's presentation at the WOT2016 summit, detailing the Weex cross‑platform framework, its ecosystem, performance optimizations, competitive advantages, challenges faced during Alibaba's Double‑11 promotion, and the project's future development goals for the next one to two years.
