The article explains how NetEase’s real‑time big‑data stream computing platform, Sloth, handles massive, continuously generated data during China’s Double 11 shopping festival, covering use cases, architectural shifts from batch to incremental processing, technical challenges, and the role of stream‑SQL for easier development.
The article explains how continuous data generation and real‑time stream processing enable e‑commerce platforms like NetEase Kaola to handle massive Double 11 traffic, showcasing use cases, architectural shifts from batch to incremental computing, and the technical challenges of latency, accuracy, and fault tolerance.
A recent internal Linux mailing list message outlines the key updates in the long‑term support Linux Kernel 4.14, including address‑leak mitigation scripts, default %p hashing, changes to /proc/cpuinfo MHz reporting, and hints about upcoming 4.15 development.
This guide explains how to tune Elasticsearch 5.x search performance by modeling documents with flattened, nested, or parent‑child structures, managing global ordinals, allocating JVM heap under 50 % of RAM, monitoring garbage collection, and choosing SSD storage and ample file‑system cache.
This article explains HBase's high‑reliability, scalability, and performance characteristics, outlines its advantages and drawbacks, presents real‑world scenarios such as seller operation logs and Jingmai message logs, and details its data model, architecture components, operational principles, and key design considerations for effective use.
This article explains how systematic coordination of design tasks—from daily routines to user behavior, demand planning, production workflows, and quality checks—can transform serial and parallel processes into efficient, habit‑forming practices that boost individual and team productivity.
This article provides a concise overview of MongoDB 3.6 RC3 release notes, covering security defaults, new aggregation operators, array update enhancements, shell command additions, JSON schema support, replica set authentication, sharding parameters, and practical tips to avoid common pitfalls.
This article explains how 360’s Linux Virtual Server (LVS) platform evolved with the FULLNAT forwarding mode, enhancing cross‑VLAN deployment, simplifying real‑server configuration, adding SYN‑proxy protection, and improving UDP handling, while detailing the new deployment architecture and operational benefits.
Rancher is an open‑source software platform that simplifies running and managing Docker and Kubernetes by providing integrated infrastructure services such as networking, storage, load balancing, DNS, security, multi‑cloud deployment, container orchestration, an application catalog, and enterprise‑grade access control.
This article explains Nginx’s modular architecture, core, standard and optional HTTP modules, mail service and third‑party extensions, then details its multi‑process and asynchronous non‑blocking request handling, event‑driven model, master‑worker design, and inter‑process communication, providing a solid foundation for deeper source‑code study.
This article recounts how the Cruise team (later renamed GoCD) tackled the "last mile" problem by implementing continuous deployment through automated pipelines, extensive testing, risk mitigation, and frequent releases, ultimately reducing deployment time and improving software delivery reliability.
This article explains Linux ACL permission management, covering what ACLs are, how to check and enable ACL support on partitions, and detailed commands for setting, viewing, masking, deleting, recursive, and default ACLs to securely control file and directory access.
This article explains three reliable ways to implement the singleton pattern in Python—using a class decorator, a custom metaclass with __call__, and overriding __new__—including complete code examples and a discussion of common pitfalls.
The article details Suning’s decade‑long evolution of its membership platform for the Double‑11 shopping festival, covering early offline CS architecture, the transition to a WebSphere‑based e‑commerce system, vertical module splitting, data migration with Spark and Hive, and the implementation of same‑city multi‑active deployment.
This article examines the rise of organized “wool‑pulling” fraud groups during China’s Double‑11 shopping festival, outlines their tools and tactics, and details NetEase Cloud Security’s multi‑layered anti‑fraud system—including captcha, SMS verification, IP rules, device fingerprinting, rule engines, user profiling, network graph analysis, and blacklist strategies—to protect e‑commerce platforms.
The article traces the development of SSD technology—from early SATA and SAS drives through PCIe and NVMe standards—explains Intel Optane's impact, introduces various Storage Class Memory types such as PRAM, ReRAM, MRAM and NRAM, and discusses their current applications and future challenges in high‑performance storage systems.
This article explains Nginx’s modular architecture, detailing core, HTTP, mail and third‑party modules, its multi‑process and asynchronous non‑blocking request handling, the event‑driven model with I/O multiplexing, and the master‑worker process interaction that together enable high‑performance web serving.
This article explains the default implementations of Java's Object.equals() and Object.hashCode(), the required contracts for overriding them, demonstrates their behavior in the String class, and provides practical guidelines and example code for correctly overriding these methods in custom classes.
This article reveals ten lesser‑known Linux commands—from hiding commands from history and inspecting file metadata to simulating output, formatting mounts, clearing the terminal, fetching mail, managing sessions, identifying file types, and displaying user IDs—complete with examples and practical tips for both desktop and server environments.
This article explains the design and implementation of a unified seller‑operation logging platform that uses Kafka for ingestion, Storm for real‑time processing, Elasticsearch for hot‑data search, and HBase for cold‑data storage, detailing the challenges faced and the optimizations applied.
