This article explains how to use CSS3 transform properties such as perspective, transform-style, and backface-visibility, along with geometry calculations, to build interactive 360° panorama scenes that work on modern browsers without Flash.
PhxRPC is a compact, 450KB RPC framework from the WeChat backend team that uses Protobuf for IDL, offers semi‑sync/async processing with Epoll‑based IO threads, provides built‑in overload protection, and includes performance benchmarks, usage instructions, and code generation details.
Oracle 11g’s Flashback Data Archive lets you retain UNDO information for extended periods, enabling point-in-time queries of tables; this guide walks through creating an ASSM tablespace, setting up a flashback archive, assigning tables, and using SCN-based queries to retrieve past data.
This article reviews Windows IoT, its lightweight Windows‑10‑based kernel, hardware requirements, supported development boards, developer resources, key features, and the platform’s strengths and weaknesses for IoT applications.
This article provides an in‑depth technical overview of Linux Netfilter, explaining its hook architecture, key macros, packet‑processing flow, and how iptables interacts with the kernel to filter, NAT, and track connections across the IPv4 stack.
This article explains the core role of Android Activity, how it interacts with users, obtains context, saves state, handles configuration changes, switches with services, details its lifecycle stages, and describes the related process priority levels in the Android system.
This article examines resource allocation philosophies—auction, budgeting, and preemption—and compares the architectures, data models, and APIs of major schedulers such as Borg, Omega, Mesos, Kubernetes, and Alibaba’s Zeus, while also exploring sharing strategies, task classifications, utilization metrics, and predictive techniques for efficient resource management.
This article presents a comprehensive technical case study of Qunar's Order Center, describing its initial architecture, the challenges faced with scaling and reliability, and the successive redesigns in versions 2.0 and 3.0 that introduced Elasticsearch, asynchronous I/O, micro‑service decomposition, rate‑limiting, and a configurable adapter layer to support massive, multi‑line order processing.
Learn the fundamentals of iptables firewall on Linux, including configuration file location, service control commands, the hierarchy of tables, chains, and rules, common targets, and essential iptables commands for listing and flushing rules.
This article examines MySQL's semi‑synchronous replication, analyzes consistency scenarios across master‑slave failures and switches, and highlights the difficulties of data rollback and multi‑master conflicts that affect high‑availability clusters.
This article reviews the essential Node.js core concepts—including the event loop, global and process objects, event emitters, streams and buffers, clustering, asynchronous error handling, and creating C++ addons—to help developers solidify their understanding and fill knowledge gaps.
This article explains how comprehensive user profiling—combining static demographics and dynamic behavior logs—feeds recommendation engines, detailing data sources, feature extraction, ranking formulas, and the long‑term goals of delivering personalized, high‑quality content to users.
LightListen adds flexible day/night and brand‑color switching by combining static XML styles and themes for basic modes with a dynamic configuration system—using shared‑preference color storage, view processors, and a traversal controller from the app‑theme‑engine library—to apply colors at runtime with minimal code duplication.
Learn how to create a lightweight HTTP health‑check service with xinetd that runs a shell script to monitor MySQL status, enabling HAProxy to instantly detect failures and stop routing traffic, complete with step‑by‑step configuration, testing commands, and sample scripts.
This guide explains how to accelerate software builds on Linux by using make -j for parallel compilation, mounting a tmpfs for faster I/O, leveraging ccache to reuse previous compile results, and employing distcc to distribute compilation across multiple machines.
During performance testing, an Oracle SQL using bind variables showed two child cursors with identical execution plans; the article explains this phenomenon by detailing Oracle’s rolling cursor invalidation mechanism, the role of the ROLL_INVALID_MISMATCH flag, and how to reproduce and observe it.
Image search, once limited by early CBIR techniques, has surged back thanks to deep learning, offering improved relevance, coverage, scalability, and user experience across applications like e‑commerce, shopping, entertainment, and surveillance, while integrating data, users, models, and systems to bridge the semantic gap.
This article examines common MySQL high‑availability designs—including single master‑slave, dual‑master with multiple slaves, Heartbeat + DRBD, MySQL Cluster, semi‑synchronous replication, and GTID—explaining their benefits, drawbacks, and practical considerations for reliable failover and scalability.
This article explains how Bilibili built the high‑stability, high‑availability, low‑latency GOIM live‑chat system, detailing its component modules, memory and module optimizations, network redesign, testing results, and ongoing monitoring to handle millions of concurrent users.
This article details the step‑by‑step evolution of Qunar's domestic flight ticket transaction system, covering early monolithic design, service‑oriented decomposition, database schema migration, adoption of non‑relational storage, and the implementation of an ELK‑based logging and monitoring platform to improve scalability and maintainability.
