This article compiles a comprehensive set of Linux operations and cloud engineering interview questions—including basic Linux concepts, networking fundamentals, and scripting challenges—to help candidates prepare for senior sysadmin roles.
Alibaba’s database team explains how their next‑generation X‑DB system achieved extreme elasticity, high performance, and cost efficiency during the Double 11 shopping festival by leveraging cloud‑native hybrid deployment, containerization, storage‑compute separation, Paxos‑based consistency, and AI‑driven self‑optimizing DBA tools, while outlining key challenges and solutions.
The AWS re:Invent 2017 conference in Las Vegas introduced a range of compute innovations—including Amazon EKS, AWS Fargate, new EC2 instance families, Spot Instance hibernation, Time Sync Service, and a Serverless Application Repository—while showcasing sessions from Netflix and other industry leaders.
The article summarizes the JavaOne 2017 conference, highlighting JDK9's modular system and collection factories, Java EE8 enhancements, JVM improvements, a graph‑based recommendation demo using EE4J, and the rise of serverless FAAS as a cloud‑native computing model.
The Meituan‑Dianping Technology Salon Online offers a recurring live‑streamed course where SRE experts, led by Zuo Pucun, discuss the challenges of high growth and concurrency, the evolution from firefighting to proactive stability, service availability, user‑experience optimization, and future automation in cloud SRE practice.
This article examines the evolution of high‑performance computing from exclusive national supercomputers to accessible cloud‑based services, outlines the three adoption stages for enterprises, and details Tencent Cloud's Batch platform features that simplify large‑scale HPC workloads.
This article explains how Suning built a standardized, high‑availability API gateway, detailing naming conventions, documentation practices, protocol choices, error‑code design, dynamic configuration, SDK automation, system refactoring, monitoring, intelligent alerting, and the specific preparations made for the O2O shopping festival.
The article traces Tencent Cloud Storage's evolution from basic data access in the early 2010s, through a data‑processing phase driven by video and image workloads, to the current data‑activation era focused on big‑data analytics and cost‑effective cloud migration, highlighting technical features and real‑world use cases.
This article examines the concepts, strengths, and limitations of Google App Engine and Amazon AWS as Platform‑as‑a‑Service offerings, focusing on their application scenarios, development support, operations management, and associated services, and draws conclusions for game server development.
This article recounts Ele.me's rapid growth from 2014 onward, detailing the challenges of network and server management, the evolution of their operations through standardization, process automation, and platform building, and how private cloud solutions like ZStack enabled fine‑grained, data‑driven infrastructure management.
This article walks through diagnosing and fixing severe Windows I/O performance degradation in a virtualized cloud host by using perf, systemtap, QEMU tracing, and kernel tweaks, revealing that excessive ACPI timer and APIC accesses cause costly VM exits and how enabling the Hyper‑V timer restores expected IOPS.
This article explains how Alibaba has evolved its DevOps practice over a decade, detailing the layered architecture of its StarOps suite—including the foundational StarAgent, the Fortress (jump server), the Qingting file‑distribution system, and intelligent AIOps features—showing how automation, scalability, and AI‑driven monitoring enable stable, low‑cost operations for massive workloads such as Double 11.
This article presents a comprehensive overview of cloud‑era network boundary management, detailing security challenges, unified access control concepts, endpoint protection, traffic analysis, and how automated operations and visualization platforms can reduce risk while maintaining efficient network operations.
This article explains the evolution of Alibaba Cloud's high‑performance load balancing, covering early LVS modes, Tengine integration, architectural improvements, and multi‑region high‑availability designs that together deliver massive throughput, fault tolerance, and flexible deployment for cloud services.
This article reviews Alibaba Cloud's high‑performance load‑balancing solution, explaining the evolution from basic load‑balancing concepts to the architecture of LVS and Tengine, detailing their modes, optimizations, high‑availability designs across groups, AZs and regions, and outlining current use cases and future directions.
UCloud’s Compute Factory enables rapid provisioning of massive VM resources for compute‑intensive services by leveraging a Mesos‑based resource management platform that unifies multi‑region data centers, supports both VMs and containers, and addresses challenges in scheduling, networking, storage, and operational reliability.
This article details Tongcheng's adoption of Ceph for handling massive unstructured data, describing the motivations, architecture, specific uses of RGW, block storage, and CephFS, the challenges encountered, optimization measures, monitoring practices, and planned future improvements.
Chief architect at Hulu shares a high‑level overview of the company’s tech ecosystem, detailing its microservice‑based backend on the Donki PaaS, cloud‑flexible deployments, extensive machine‑learning pipelines, VOD and live‑streaming services, multilingual codebases, and the operational challenges of scaling a global streaming platform.
This article details Gome Group’s transition to cloud computing and operations automation, describing its corporate background, new operational strategies, the establishment of Gome Cloud, IAAS product architecture, monitoring solutions, automation standards, and deployment practices such as gray releases and Docker integration.
At Gome Group, a traditional retailer with over 30,000 employees, the IT team built a unified cloud platform and automated operations, consolidating resources across dozens of subsidiaries to cut costs, boost efficiency, and enable rapid service delivery through IAAS, standardized processes, and custom monitoring tools.
The talk outlines WeChat’s approach to handling rapid user growth through disciplined operational standards, cloud‑native management, precise capacity planning, and automated scaling, detailing configuration file conventions, name‑service design, hardware metric evaluation, stress‑testing methods, and dynamic resource allocation to maintain high efficiency and low cost.
This article explains the fundamentals of video live streaming, covering terminology, bitrate, frames, key vs. non‑key frames, CDN caching strategies, and the end‑to‑end live streaming pipeline—including capture, preprocessing, encoding, pushing, transcoding, distribution, and playback—along with typical use‑case scenarios.
The article explains how RDMA (Remote Direct Memory Access) reduces CPU involvement, lowers latency, and increases bandwidth in data‑center networks, describes JD.com’s practical deployments across AI, big‑data, storage, and HPC workloads, and highlights industry trends toward broader RDMA adoption.
On September 23 2017, the CRUG Redis Technology Salon in Shenzhen, hosted by vivo, gathered about one hundred developers and five experts from Tencent, Sina and Vivo to share practical Redis experiences, discuss its memory‑store advantages, enjoy prizes, live Q&A, and receive a downloadable PPT via the official WeChat account.
At the inaugural 2017 Alibaba Technology Forum held at Hong Kong University of Science and Technology, senior executives highlighted Alibaba’s cutting‑edge AI, machine learning, big‑data, and cloud breakthroughs, showcasing how data‑driven technologies power billions of users across e‑commerce, finance, logistics, healthcare, and entertainment.
This article details Meizu's journey from early internet eras to a mature continuous delivery platform, outlining the operational challenges, platform components, standardization, automation, and future intelligent operations to achieve high quality, efficiency, cost control, and security.
At iQIYI, the author led a private‑cloud platform built on Mesos and Chronos that runs millions of weekly containers for transcoding and analytics, then layered a feature‑rich PaaS called QAE on Marathon, highlighting IaaS vs PaaS benefits and outlining future micro‑service, GPU, and scaling enhancements.
An in‑depth review of the OpenStack Pike release highlights its new features across core services and presents detailed statistics on Chinese enterprises’ code contributions, showing top contributors per component and the overall growth of China’s participation in the OpenStack community.
The article explains how cloud computing supports Application Lifecycle Management, outlines the benefits and risks of various cloud service models, and describes DevOps practices such as Infrastructure as Code, automated provisioning, continuous integration, and knowledge sharing that help mitigate cloud‑related challenges.
This article explains the relationship between Software‑Defined Networking (SDN) and cloud platforms, detailing cloud service models, OpenStack core services, OpenDaylight controller architecture, and the integration mechanisms that enable unified management of network, compute, and storage resources.
This article explains Alibaba Cloud's Server Load Balancer (SLB) architecture and its four-tier high‑availability design—application processing, cluster forwarding, cross‑zone disaster recovery, and cross‑region disaster recovery—detailing both product features and user‑side best practices.
This article explains the definition, origins, business benefits, and future of Network Function Virtualization (NFV), its relationship with Software‑Defined Networking (SDN), and how industry groups like ETSI and OPNFV are shaping its adoption in modern data centers.
This article traces the evolution of Software-Defined Networking (SDN) from its early research roots at Stanford through key academic breakthroughs, industry milestones, major open‑source projects, and the rise of SDN‑related startups, highlighting both scholarly and commercial developments up to 2017.
This article presents a comprehensive collection of technical knowledge maps compiled over years, covering architecture, Java, microservices, consistency, big data, cloud computing, mobile development, front‑end, back‑end, DevOps, and more, aiming to help engineers and architects master essential skills and best practices.
This article outlines the unique knowledge and abilities required for interaction designers working on cloud computing products, covering core UX competencies, essential front‑end and back‑end development concepts, cloud‑specific technical fundamentals, and vital soft skills, plus a curated reading list for continuous growth.
This article compiles an extensive set of technical knowledge maps—covering architecture, JVM, Java concurrency, big data, cloud computing, mobile, frontend, backend, DevOps and more—to help engineers and architects quickly locate and master essential concepts across the software development spectrum.
This tutorial explains how to deploy a Spring Boot application on Heroku using both the web dashboard and the Heroku CLI, covering required Procfile configuration, GitHub integration, command-line installation, repository cloning, code push, log inspection, and app launch.
The article analyzes 2017 Q2 earnings, Stack Overflow traffic, language preferences, industry and geographic trends to compare the popularity and growth of Amazon Web Services and Microsoft Azure, highlighting AWS's faster growth and Azure's strong presence in certain sectors and regions.
The article explains why AI engineers need foundational infrastructure knowledge—covering big‑data processing, cloud services, containerization, MapReduce, and deep‑learning platforms—to effectively solve real‑world problems, collaborate with teams, and build scalable, maintainable AI solutions.
This article explains NVIDIA GRID vGPU virtualization, detailing how GPUs are partitioned by memory size, the supported hypervisors, the operation of virtual GPU resources, differences between full‑allocation vGPU and GPU pass‑through, licensing requirements, and performance considerations for cloud and data‑center environments.
This article details how Tencent's SNG operations team leveraged the ZhiYun intelligent operations platform—through standardized processes, massive IaaS provisioning, CMDB management, automated workflows, and real‑time capacity monitoring—to support the high‑traffic “Military Photo” H5 campaign, scaling up to 4,000 servers and 24 GB bandwidth.
This article details the evolution of Tongcheng Travel’s PaaS platform, describing its shift from Docker Swarm host networking to a custom container network using Calico and Contiv, the implementation of public‑IP allocation, and the monitoring solution built with OVS sFlow, Redis and ELK.
The article describes how Postlight rebuilt its Readability Parser API using a JavaScript‑based serverless architecture on AWS Lambda and API Gateway, achieving a cost reduction from about $10,000 per month to roughly $370 while maintaining functionality and scalability.
With data volumes soaring to petabyte scales, the article explains why object storage is the only viable solution for massive storage needs, outlines procurement considerations, design principles, and operational challenges, and offers practical guidance for building, evaluating, and scaling PB‑level storage systems.
In the AI era, engineers need more than cutting‑edge algorithms—they must understand infrastructure, deployment, scalability, and team collaboration, as illustrated by four practical reasons and Google’s architectural breakthroughs that bridge big data, machine learning, and deep learning.
This article compiles an extensive collection of architecture knowledge maps and a detailed overview of DevOps tools, categorizing them by development, deployment, and maintenance functions while also presenting related big‑data and cloud‑computing skill maps for engineers seeking a holistic view of modern software infrastructure.
This extensive essay traces the evolution of computer operating systems from the 1940s to today, analyzes the limitations of current OS architectures, and proposes a cloud‑native, container‑based future exemplified by the open‑source Elastos platform, highlighting security, interoperability, and new business models.
This article explores whether Facebook could be hosted on AWS by estimating Facebook's server count, comparing hardware performance, evaluating software compatibility, and calculating the massive cost implications, ultimately concluding that while technically possible, it would be far more expensive than maintaining its own data centers.
The article reviews the three historic AI booms, explains why today’s cloud‑based visual intelligence represents a distinct era, outlines five key factors for successful visual AI, and showcases real‑world Alibaba Cloud applications such as product search, city‑wide monitoring, medical diagnosis, and visual advertising.
The article examines how legacy, monolithic software struggles in modern IT, while cloud‑centric architectures—exemplified by Microsoft Azure’s embrace of open‑source, IaaS, PaaS, and DevOps tools—enable scalable, flexible development and operations, signaling an inevitable shift toward cloud‑native production.
This interview chronicles Xiao Li’s unconventional path from a petroleum chemistry graduate to a senior operations director, highlighting his hands‑on experience with system administration, virtualization, cloud computing, and team management across major Chinese tech firms.
This article explains the Trusted Cloud host rating framework, detailing its star‑based levels, evaluation criteria such as availability, security and disaster recovery, and how enterprises can use the standards to select the most suitable cloud host provider.
This article details Alibaba's migration from Oracle PeopleSoft HCM to a self‑developed, cloud‑native eHR platform, describing the technical challenges, phased development using Groovy and MaxCompute, and the resulting six‑fold speed increase, hundred‑fold cost reduction, and enhanced employee experience.
This article explores why Alibaba's middleware is dubbed the architect's cradle, outlines career development routes within the team, details the extensive technology stack, and examines the major technical challenges such as massive data processing, real‑time analytics, and large‑scale deployment during peak events.
This article surveys eleven forward‑looking predictions—from cloud computing eclipsing Moore's law to IoT security challenges, video‑centric web experiences, AI‑driven features, evolving UI design, autonomous transport, legal constraints, and the rise of containers—highlighting how programmers must adapt to stay competitive.
This article provides a comprehensive overview of Mellanox's InfiniBand solutions, covering the company's background, network architecture, routing algorithms, Fat‑Tree topology, the OFED software stack, management tools, MPI support, adapters, switches, routers, cables, and related products for high‑performance computing and cloud data centers.
The article explains Serverless and Functions‑as‑a‑Service, their relationship with micro‑services, typical use cases such as bursty workloads and event‑driven data processing, and discusses the operational, cost, and strategic implications for cloud platforms like Alibaba Cloud.
The article analyzes the recent surge in demand for operations engineers, especially at Alibaba, detailing specific job descriptions, required deep Linux knowledge, automation expertise, and extensive system architecture skills, while highlighting the gap between candidate abilities and employer expectations.
In an interview at the 2015 HPC User Forum, experts discuss how cloud computing, big data analytics (HPDA), deep learning, and software‑defined architectures are reshaping high‑performance computing and outline emerging trends, challenges, and strategic advice for Chinese HPC vendors.
Docker renamed its original open‑source project to Moby, shifting the Docker brand to its commercial CE and EE products, which sparked community backlash over perceived rebranding, loss of the Docker open‑source identity, and raised questions about open‑source monetization and corporate strategy.
Alibaba senior technology director Xie Chongjin explains the company's ambitious roadmap for optical communication networks, tracing their historical roots, current technical challenges such as the Shannon limit, and future standards that aim to accelerate data‑center bandwidth while keeping costs under control.
The author shares a candid journey from low‑paid outsourcing coding to senior roles in design, analysis, and big‑data architecture, revealing how understanding value networks, leveraging cloud and data trends, and expanding beyond pure coding can dramatically increase a technologist’s personal and market value.
Meituan Dianping’s technical salon showcased its automation journey—detailing database automation platforms, service‑tree management, Puppet‑based web control, and a CMDB case study from Shanghai Zhaogang—highlighting rapid iteration, standardization challenges, and the evolution of automation from tools to core operational practice.
This article details Alibaba Cloud's high‑performance local storage solution for the massive Alipay Red Packet service, covering business requirements, existing block storage limitations, architectural redesign, key components like Virtio‑blk, SPDK, and NVMe SSD, and performance benchmarks demonstrating dramatically lower latency and higher IOPS.
This article details JD.com's Elastic Cloud 1.0 platform—its massive container deployment, four‑principle philosophy, architectural design, operational challenges, performance optimizations, and the roadmap toward Elastic Cloud 2.0—offering practical insights for large‑scale cloud engineering.
The article explains how hybrid cloud adoption demands on‑demand, elastic networking and argues that Software‑Defined Networking (SDN) provides the scalability, multi‑vendor interoperability, reliability and intelligence needed to seamlessly connect private and public clouds.
This article describes a cloud‑based intelligent logistics scheduling platform for food‑delivery services that leverages big‑data analytics, deep‑learning prediction models, and visualisation tools to achieve multi‑objective dynamic optimization, improve dispatch efficiency, and enhance user experience across thousands of cities.
The article reviews the major software development trends of 2016—including progressive web apps, chatbots, evolving front‑end frameworks, cloud adoption, and machine‑learning breakthroughs—while highlighting key programming languages, databases, tools, and technologies to watch in 2017.
Industry 4.0, driven by IoT, artificial intelligence, big data and cloud computing, represents a new manufacturing era; this article outlines its historical stages, nine supporting technologies, three core characteristics, strategic approaches, eight key factors, eight values, and the Chinese adaptation, illustrated through extensive visual content.
This article introduces OpenStack, outlines its core components, describes NetEase’s private cloud architecture and services, and shares detailed deployment strategies, configuration settings, performance optimizations, and operational lessons learned from years of production use.
This article recounts how China Mobile Zhejiang’s IT department evolved from a traditional IOE architecture to a cloud‑native, DevOps‑driven operation, detailing the motivations, challenges, migration steps, new organizational models, and future concerns for telecom operators.
This article details Ctrip's journey in building a private container cloud to support rapid business growth, covering elasticity challenges, container deployment principles, orchestration platform choices, network design, operational issues, custom executors, monitoring solutions, and the overarching CDOS system.
This article revisits earlier mistakes in a Nimble Storage analysis, provides corrected specifications for the CS series, outlines HPE's evolving cloud computing strategy, and shares two free resources for readers interested in cloud architecture and Amazon cloud services.
The talk outlines nine essential computing capabilities—transaction processing, system robustness, connectivity, decision-making, data insight, intelligent services, biometric authentication, blockchain trust, and immersive integration—that have transformed Ant Financial over the past decade and outlines the challenges and strategies for the next ten years.
This article outlines a cost‑effective, scalable backend architecture built on Alibaba Cloud services—including VPC, RDS, ECS, OSS, and security measures—to support the early stages of a mobile and web application and to enable gradual performance upgrades as traffic grows.
This article examines VIPshop's transformation from a single‑application LAMP system to a vertically split and finally distributed service‑oriented architecture, detailing the business model, key design requirements, platform governance, and the technical services that enable a scalable e‑commerce operation.
The article reviews the evolution of Direct Attached Storage (DAS) from its early role as basic direct‑connected storage to its renewed relevance in big‑data, cloud, and HPC environments, detailing market growth, vendor offerings, architectural designs, and practical deployment scenarios.
This article details the HULK team's experience upgrading their private‑cloud OpenStack environment from Kilo to Mitaka, covering background, risk‑benefit analysis, preparation, step‑by‑step procedures, common pitfalls, and practical solutions, offering actionable guidance for similar OpenStack migrations.
This article examines the evolution of cloud computing, compares public and private cloud models, highlights the strengths and shortcomings of major providers such as AWS, Azure, and Alibaba Cloud, and explores how OpenStack can address enterprise needs while outlining future software‑defined trends.
This article walks you through the entire process of reporting OpenStack bugs and submitting patches, covering both known and unknown issues, required preparations, SSH key setup, Gerrit configuration, git‑review usage, common pitfalls, and final review steps.
This article explains how applying Lean Engineering principles—such as small batches, rapid failure, continuous improvement, and continuous delivery—can reduce risk, accelerate software delivery, and improve quality in enterprise IT environments, while also integrating cloud‑based automation and feedback loops.
The article explains how growing business complexity and legacy code make monolithic systems hard to maintain, and shows how microservice architecture—by isolating functionality, improving scalability, supporting DevOps, and fitting cloud environments—delivers agility, lower error rates, and easier resource management.
This article explains Baidu App Engine's lightweight virtual‑machine based resource isolation, presents performance test results for PHP workloads, details the platform's features such as multi‑language support and automatic dependency installation, and provides step‑by‑step instructions for setting up the local development environment on Windows and Linux.
This article explains how Alibaba leverages a one‑click site‑building platform and elastic capacity delivery to dynamically provision, scale, and release cloud resources for the massive traffic spikes of the Double 11 shopping festival, reducing waste and improving operational efficiency.
Serverless computing has surged since Amazon introduced Lambda in 2014, and IBM’s open‑source OpenWhisk—now integrated with Bluemix and supporting Node.js—offers a comparable FaaS solution, enabling developers to quickly deploy functions such as a Node.js Yahoo Weather query on the cloud.
This article explains how Tencent built a billion‑scale, generalized recommendation system by designing a reusable algorithm library, deploying a low‑latency, highly available real‑time streaming platform (R2), and offering a cloud‑based recommendation engine that simplifies integration for internet businesses.
Meituan’s self‑developed MGW replaces LVS with a DPDK‑based four‑layer load balancer that handles tens of gigabits per second and millions of concurrent connections by eliminating interrupts and locks, isolating control and data planes, and providing OSPF‑ECMP clustering with seamless failover and session synchronization.
The 2016 HDG Shenzhen finale recap highlights five expert talks covering developer journeys, Huawei's network acceleration API, AI‑driven maker spirit, cloud collaboration strategies, and the CloudOpera IES open‑API ecosystem, illustrating practical lessons for modern developers.
This article introduces the standout operations professionals featured by the High‑Efficiency Operations community in 2016, summarizing each expert’s background, key achievements, and a curated list of their most influential technical articles for readers seeking deep insights into modern ops practices.
This article explains the origins, core features, logical architecture, and advantages of data lakes, contrasts them with traditional data warehouses, outlines a modern data architecture that combines lakes and warehouses, and introduces the DCE intelligent data lake platform with practical Q&A.
This article explains how large internet firms evolve their IT operations from reactive fire‑fighting teams to standardized, model‑driven, automated platforms covering planning, building, management, monitoring, and process‑oriented operations across compute, storage, and network resources.
The article shares a comprehensive recap of AWS re:Invent 2016, highlighting over a thousand new features across compute, storage, networking, security and tools, discussing serverless concepts, the Modern Data Architecture framework, and practical lessons learned by the English‑Fluent‑Talk engineering team.
This article examines the core technologies of big data—including data collection, storage, management, analysis, and mining—highlighting architectural challenges, analysis techniques, storage solutions, ETL processes, and the interplay between big data and cloud computing, while emphasizing practical implementation considerations.
MIT Technology Review reports that Alibaba’s 2022 Double 11 shopping festival set new e‑commerce records while showcasing the company’s advanced big‑data, AI, and cloud‑computing technologies, highlighting massive transaction volumes, high‑quality data processing, robust security measures, and the strategic push toward global digital infrastructure.
This article provides a comprehensive, command‑by‑command tutorial for installing and configuring the OpenStack Neutron networking service on the controller, network, and compute nodes, covering package installation, database setup, Keystone integration, ML2 plugin configuration, and service startup.
This tutorial walks through the complete installation and configuration of OpenStack's Glance image service and Nova compute service, covering package installation, database initialization, Keystone integration, service registration, endpoint creation, and service startup on both controller and compute nodes.
Learn how to set up a private OpenStack Icehouse cloud by following detailed installation steps, configuring Keystone, setting up networking, creating tenants, roles, and users, and verifying services, complete with command-line examples and essential configuration files.
This guide walks through KVM’s background, features, architecture, and step‑by‑step deployment—including hardware checks, module loading, qemu‑kvm options, bridge configuration, script creation, VM installation, and Libvirt‑based management with virt‑install and virt‑manager—providing a comprehensive tutorial for Linux virtualization.
This article explains Tencent Cloud's end‑to‑end solution for global same‑server gaming, covering centralized data deployment, regional player access, high‑speed VPC interconnects, POP acceleration, and practical deployment steps to achieve low‑latency worldwide gameplay.
The 2016 Global Agile Operations Summit in Shanghai concluded with a series of expert sessions covering agile DevOps trends, cloud‑native automation platforms, database performance tuning, container orchestration, and real‑world case studies from leading companies, followed by the award ceremony honoring ten MVPs who drove innovation across operations and infrastructure.
