This article explains why Redis latency can suddenly increase—covering high‑complexity commands, large keys, concentrated expirations, memory limits, fork overhead, CPU binding, AOF settings, swap usage, and network saturation—and provides practical diagnostic steps and mitigation techniques.
The article explores how small and medium‑sized enterprises can recover from pandemic setbacks by adopting flexible employment models, leveraging digital tools for management and customer insight, and shifting to stronger online promotion while controlling costs and improving resilience.
This article explains the need for chaos engineering in modern distributed and cloud‑native systems, outlines the challenges faced by architects, developers, testers and product teams, and provides step‑by‑step guidance on using ChaosBlade and Alibaba's AHAS platform for effective fault‑injection experiments.
This article describes iQIYI's payment team approach to full‑link load testing, covering background challenges, systematic problem exploration, preparation of test environments, traffic modeling, execution safeguards, practical results, and future plans to improve capacity verification and system reliability.
The article outlines twenty‑four key capabilities across continuous delivery, architecture, product and process, lean management, and culture that research shows drive superior software delivery performance and organizational outcomes.
This guide enumerates the key Linux system metrics—covering CPU, memory, disk, I/O, network, kernel parameters, RAID, SMART, NTP, and process information—that open-falcon agents collect every minute to enable comprehensive operations monitoring and timely issue detection.
This article examines the complexities of testing environments, outlines typical causes of failures such as resource constraints, external dependencies, and service bugs, and provides systematic troubleshooting methods, useful tools, and real‑world case studies to improve reliability and efficiency.
This article explains how to design and implement service‑chain (APM) monitoring and end‑to‑end process monitoring in distributed systems, covering concepts such as spans and traces, TRACE_ID generation, logging practices, visualisation techniques, and a practical expense‑report use case with code examples.
Facing a surge to over 100 million members, iQIYI rebuilt its monitoring stack by ingesting four log types, adopting Spark Streaming, Flink and Druid for real‑time analysis, and optimizing resource usage, which cut incident resolution time by more than 80 % while supporting billion‑level data volumes.
This guide explains Nginx’s core concepts—including reverse proxy, load balancing, static‑dynamic separation, common commands, configuration blocks, and high‑availability setup with Keepalived—providing step‑by‑step examples and practical diagrams for reliable web service deployment.
This article describes how the infrastructure team reduced new project deployment time to under an hour by combining a container platform with domain convergence, detailing the processes, automation pipelines, Kubernetes-based deployment, autoscaling, logging, and security considerations for efficient, cloud‑native operations.
This guide outlines essential incident management principles—prioritizing business restoration and timely escalation—followed by detailed methodologies such as restart, isolation, and degradation, and explains role responsibilities, user impact handling, and post‑incident summarization for continuous improvement.
This guide walks you through ten essential Linux command‑line tools—such as uptime, vmstat, iostat, and top—showing how Netflix’s performance engineers use them to quickly assess system load, resource saturation, and errors within the first minute of investigation.
The article outlines a three‑stage ops maturity model—firefighting, fire prevention, and arson—explains how proactive fault‑injection drills, continuous availability improvements, and aligning technical metrics with business value can transform operations from reactive responders into strategic value creators.
This article details how, despite limited resources and time, a product team designed and executed the “Part‑time Gold Rush” operation—defining goals, targeting young users, building a memorable brand, applying 5W1H strategy, leveraging AARRR growth tactics, and achieving revenue and traffic targets.
The article outlines G Bank’s transition from a single‑threaded commercial monitoring solution to a self‑developed, open‑source based alert system that leverages Akka for parallel collection, Apache Dubbo for distributed processing, and Apache Ignite for in‑memory storage, achieving million‑level alert capacity, sub‑100 ms latency, and linear scalability.
A roundup of recent tech news covering a Cisco sabotage case, a London data‑center fire, Linux's 29th anniversary, Gartner's China ICT trends, major cloud investments, Windows 95 milestones, Didi's GPU server launch, Hainan's DNS project, Dell’Oro's market report, executive share reductions, and an upcoming global operations conference.
This guide explains the importance of shell script coding standards, outlines core principles such as correctness, readability, maintainability, and consistency, and provides detailed recommendations on file naming, encoding, line length, indentation, comments, testing, and safe use of commands to improve script quality and reduce maintenance costs.
This guide walks through verifying the existing Nginx 1.16.1 process, compiling and configuring Nginx 1.18.0 with identical options, performing a zero‑downtime binary replacement, and handling rollback procedures using signals and process management commands on a Linux server.
This article explains how to migrate Docker images, containers, and data volumes using save/load, export/import, and backup/restore commands, offering practical steps for offline environments, complex production services, and volume handling while highlighting the limitations of conventional approaches.
Tencent Cloud’s managed ClickHouse service now includes an automated data‑balancing feature that, after user authorization and bandwidth configuration, creates migration plans to redistribute tables across new or decommissioned nodes, eliminating manual rebalancing, reducing operational overhead, and ensuring balanced storage during elastic scaling.
This article critically examines Fiddler Everywhere, comparing its free and Pro editions, highlighting missing capabilities, analyzing the product roadmap and update cadence, and concluding why the tool is unlikely to become popular despite its attractive pricing.
NetBox 2.9.1, an IP address and data center infrastructure management tool built on Django and PostgreSQL, introduces several enhancements including SLAAC address status, nested LAG support, version details on error pages, and a backward‑compatible remote authentication backend parameter.
This article explains how enterprises adopting SRE can design a comprehensive observability platform—covering metrics, logs, and tracing—while also detailing effective incident response, post‑mortem practices, testing, capacity planning, automation tool development, and user‑experience focus to improve overall operational reliability.
This article outlines a practical four‑step process—Define, Scope, Experiment, Analyze—to help DevOps engineers prioritize automation tasks, assess pain points, and align improvements with business value, offering actionable guidance for effective pipeline and workflow optimization.
ESrally is the official Elasticsearch benchmarking tool; this guide walks through its installation prerequisites, step‑by‑step setup of Python, JDK, and Git, configuration of tracks, cars, pipelines, and challenges, and demonstrates real‑world performance comparisons across Elasticsearch versions and hardware platforms.
This article details a month‑long DevOps case study conducted by the IDCF team on traditional banking, describing the four guiding principles, the six‑stage workflow from team formation to retrospection, the research findings across major Chinese banks, and the resulting best‑case award and future digital‑transformation discussions.
This article introduces Prometheus' query language PromQL, explains instant and range vector selectors, label matching, offset handling, storage design, common functions and aggregation operators, and provides practical advice for efficient querying and avoiding performance issues.
The article outlines ten frequent pitfalls that organizations encounter when adopting DevOps—such as out‑of‑order delivery, misunderstandings of DevOps roles, lack of flexibility, speed over quality, isolated teams, unautomated databases, insufficient incident handling, limited expertise, security neglect, and team fatigue—and provides practical guidance to prevent these errors for more successful DevOps outcomes.
This article explains what technical debt is, why it accumulates in both development and operations, and outlines four DevOps‑driven strategies—including building cross‑functional teams, automation, containerization, and API‑centric design—to identify, track, and repay technical debt while improving cloud migration outcomes.
This article explains the concept of end‑state‑oriented monitoring, its significance for modern operations, the shortcomings of existing solutions, and a layered design approach that leverages real‑time data, service catalogs, and AI to achieve secure, stable, efficient, and low‑cost operations.
This guide shares hard‑earned lessons from real‑world server administration, emphasizing careful testing, confirming commands before execution, limiting simultaneous operators, always backing up configurations, protecting data, tightening SSH and firewall security, implementing comprehensive monitoring, and applying disciplined performance‑tuning practices to maintain stable, reliable services.
This article shares practical experience on backend troubleshooting, outlining common failure types, a step‑by‑step diagnosis workflow, essential tools, and systematic optimization techniques for performance, stability and maintainability, helping engineers quickly stop losses, pinpoint root causes, and implement robust fixes.
This tutorial walks you through installing Zabbix on CentOS 7, covering prerequisite disabling of SELinux and firewalls, adding repositories, installing server, web, and database components, configuring files, securing MariaDB, starting services, and completing the web‑based setup with language customization.
This article explains the importance of quality management in projects, outlines its two main dimensions—process quality and product quality—details the multiple benefits of systematic quality control, and provides an eight‑step framework for creating an effective quality management plan.
This guide walks you through the challenges of rapid system provisioning, explains the benefits of Alibaba Cloud Resource Orchestration Service (ROS), and provides detailed, IDE‑integrated steps for creating, managing, and deploying ROS templates and resource stacks efficiently.
At the 9th China Logistics Technology Summit, ZTO Express’s Le Aihua explained how AI‑driven intelligent routing and big‑data analytics are reshaping logistics networks, boosting efficiency, cutting costs, and positioning logistics as a critical infrastructure in the post‑pandemic era.
This article explains how a comprehensive event‑tracking management platform can streamline definition, offline and online assurance, automate testing, and monitor data quality across multiple client platforms, improving collaboration and reducing errors in fast‑growing business environments.
This article details how Dada built a Kubernetes‑mixed log platform that handles over 130 billion logs per day, stores more than 14 TB daily, and maintains a 300 TB total volume by automating collection with Filebeat, parsing with Storm, and optimizing Elasticsearch with hot‑cold nodes.
The article explains how integrating DevOps toolchains can achieve enterprise‑scale end‑to‑end communication and collaboration without forcing teams to change their workflows, discusses common bottlenecks, presents unified versus loosely‑coupled integration approaches, and offers practical recommendations for building an inclusive, interconnected DevOps ecosystem.
This article reviews ten well‑known enterprises—including Adidas, Capital One, Verizon, Disney, and Starbucks—that have undertaken large‑scale DevOps and cloud‑native transformations, detailing the challenges they faced, the cultural and technical changes implemented, and the measurable business benefits achieved.
This article shares a detailed case study of building multi‑cloud site disaster‑recovery and fault‑drill practices at Kaixin Network, covering high‑availability concepts, architectural redesign, pain points, automated one‑click switching, and future self‑healing with chaos engineering to improve reliability.
This guide explains how to analyze a sluggish production server by examining overall system metrics, CPU usage, memory, swap, disk space, and I/O using common Linux commands such as top, vmstat, free, df, iostat, and sar, with practical interpretation tips for each output field.
This article introduces four widely used Linux monitoring tools—iotop, htop, IPTraf, and Monit—explaining their features, usage scenarios, and how they help operations engineers diagnose performance issues without a GUI, including real‑time I/O tracking, visual CPU/memory graphs, network traffic analysis, and flexible alerting.
This guide outlines eight practical steps—including defining scope, forming a planning team, setting clear objectives, designing realistic scenarios, creating evaluation checklists, assigning roles, conducting pre‑drill briefings, and performing post‑drill reviews—to help organizations execute effective, repeatable disaster recovery exercises that strengthen business continuity.
This article explains the 955 work‑life‑balance concept, contrasts it with the 996 model, and provides a curated list of tech companies that are generally considered to follow a 9‑5‑5 schedule, while noting regional and departmental variations.
This article analyzes why DevOps adoption often fails, explores the Agile Flow Model with its four fluency intervals, outlines the necessary organizational investments and challenges for each stage, and presents real‑world DevOps toolchain case studies to guide effective implementation.
The article describes the challenges of troubleshooting distributed deployments across many machines and presents a solution built on the ELK stack that centralizes logs from Java and Go services, enabling near‑real‑time search, visualization, and faster issue resolution.
This article explains the evolution from traditional C/S to B/S architectures, compares DevOps and SRE principles, discusses their roles in the container and cloud eras, and showcases StarRing's TDC platform that integrates automated pipelines, monitoring, and deployment for efficient software delivery.
ShenTan is an automated fault‑localization platform for online services that quickly (under five seconds) pinpoints server‑side issues with developer‑level accuracy by aggregating real‑time metrics, applying a decision‑tree model enriched by expert knowledge and dynamic thresholds, and presenting results through an integrated alert and visualization system, while planning broader endpoint coverage and multi‑tenant support.
Spotify shares a three‑step, product‑focused approach—prioritization, productized migration, and automation—to streamline large‑scale technical upgrades, avoid fragmented legacy systems, and keep engineering teams focused on core business value.
This article provides a comprehensive walkthrough of Nginx configuration directives, explains key parameters such as worker processes, logging, gzip, and demonstrates how to set up multi‑node load balancing with various upstream algorithms using Docker containers and host file adjustments.
This article provides a step‑by‑step methodology for diagnosing and resolving common online failures in Java services, covering CPU bottlenecks, disk I/O problems, memory leaks, garbage‑collection inefficiencies, and network anomalies such as timeouts, TCP queue overflows, and RST packets.
The article analyzes the growing limitations of tape backup, outlines a step‑by‑step migration to disk‑based backup using deduplication, compression and modern storage technologies, and explains how this transition improves reliability, cost efficiency and recovery speed for enterprises.
This guide walks through the complete design and step‑by‑step deployment of a billion‑scale ELK logging platform, covering architecture, component roles, version selection, configuration files, and command‑line installation for Filebeat, Kafka, Logstash, Elasticsearch, and Kibana.
This presentation details ZTO Express’s rapid rise from a modest startup to the world’s largest courier by exploring its technology‑driven business model, crowd‑funded expansion, electronic waybills, smart routing, AI customer service, employee equity schemes, and future digital logistics strategies.
This guide walks you through converting a legacy laptop into a personal cloud server by installing Debian 10, configuring NAT and DDNS on your router, and using the Baota control panel to deploy services, all while keeping power consumption and costs low.
This article outlines the five key practices—adopting a developer mindset, mastering system engineering, gaining cloud experience, learning containers, and developing soft skills—required to become an effective DevOps engineer in today’s rapidly evolving tech landscape.
This guide provides step‑by‑step instructions for installing, configuring, and running three Kafka management tools—Kafka Monitor, Kafka Manager, and Kafka Eagle—including required files, shell scripts, configuration changes, and how to access their web interfaces for monitoring and administration.
After two years transitioning from e‑commerce to finance, the team shares practical monitoring strategies for low‑frequency financial services, contrasting e‑commerce traffic‑based methods with finance‑specific challenges, and detailing point‑based metrics, hourly success‑rate alerts, aspect‑oriented exception handling, white‑list filtering, and Sentinel‑based circuit breaking.
This guide explains how to install and use the Linux command‑line tools iftop and nethogs for real‑time network traffic monitoring, covering installation commands, interface selection, output interpretation, shortcut keys, and advanced options to help troubleshoot slow or blocked network connections.
This article introduces the concept, core capabilities, and architectural evolution of a reconciliation center—from its initial 1.0 design through 2.0 and 3.0 upgrades—highlighting problem statements, solution approaches, and the applicable scenarios that make it essential for large‑scale data consistency in modern micro‑service systems.
This article provides a comprehensive overview of continuous integration and delivery, covering traditional release challenges, CI/CD concepts, Jenkins architecture, personal implementation experiences, and practical advice for mastering DevOps pipelines and automation.
This case study analyzes the Bank 4.0 transformation of traditional Chinese banks, detailing industry characteristics, historical challenges, open‑banking drivers, the ABCDII technology framework, DevOps tooling, metric systems, and a future ecosystem vision to guide digital and operational improvement.
This article describes how our team designed and implemented a comprehensive online monitoring system for construction drawing generation, covering business background, technical architecture analysis, metric definition, monitoring methods, and the resulting dashboards that improve quality, stability, and rapid issue resolution.
This article explores the relationship between Agile and DevOps, explaining their origins, narrow and broad definitions, how they address gaps between business, development, and operations, and presenting a capability growth model that highlights continuous delivery and lean principles as shared goals.
The 2020 Global DevSecOps survey reveals that CI/CD not only speeds up code releases but also automates many manual tasks, fundamentally changing the responsibilities of developers and operations engineers, blurring traditional role boundaries and creating new opportunities for automation and testing.
Alibaba Entertainment transformed its capacity management from manual, experience‑based decisions to a fully automated system that continuously evaluates single‑machine performance, identifies performance and success‑rate breakpoints, and drives elastic scaling, dramatically improving resource utilization, availability, and development efficiency across all its applications.
This article explains how to modify systemd unit files or use systemctl commands to set resource isolation parameters such as CPUQuota and MemoryLimit, demonstrates the changes with a MySQL CPU‑usage experiment, and describes the underlying cgroup and systemd mechanisms on Linux 7.
This article explains how to use GitLab's protected environments and manual approval jobs to control production deployments, illustrating configuration examples, adding approval stages, and discussing the benefits of GitOps for secure, compliant CI/CD pipelines.
This guide shows how to install and use nload, iftop, and sar for live network bandwidth monitoring on Linux, explains their key parameters, and provides two shell scripts that calculate per‑second inbound and outbound traffic from /proc/net/dev.
Keepalived, originally designed for LVS load balancing, provides VRRP-based high‑availability by managing LVS nodes, performing health checks, and offering failover for services like Nginx, HAProxy, and MySQL, while also addressing split‑brain scenarios and non‑preemptive configurations.
This article outlines how Alibaba's 1688 platform built a cross‑border supply chain, detailing its origins, service models, product strategies, system architecture, and data‑driven operational practices that enable low‑cost global digital goods distribution.
This article analyzes 13,966 Chinese operations‑engineer job postings scraped from 51job, cleaning the data with Python and Pandas, then visualizing industry demand, city concentration, salary ranges, education requirements, company size distribution, and keyword trends to guide job seekers and recruiters.
The article presents a Digital Transformation Framework (DTF) that helps asset‑management firms model, evaluate, and implement disruptive digital strategies across front, middle, and back‑office functions, emphasizing composable enterprises, cultural change, BPaaS, API‑driven architectures, and value‑based prioritization to achieve sustainable competitive advantage.
This article explains the concept of full‑path packet loss monitoring, its importance for banking networks, the causes of packet loss, and detailed technical implementations—including traffic splitting, collection, automatic analysis engines, TCP retransmission detection, and algorithms for pinpointing loss locations—to dramatically reduce troubleshooting time.
This article analyzes 13,966 Chinese operations engineering job postings collected from 51job, detailing scraping methods, data cleaning steps, and visualizations that uncover top hiring industries, city demand, salary ranges, required education, company size distribution, and keyword trends for the ops market.
iQIYI’s IPv6 rollout, responding to the national deployment plan, coordinated multiple technical teams to redesign its network and introduced the “iQIYI IPv6 Cloud Control” scheme that manages IPv4/IPv6 switching and fallback, reaching more than 200 million active IPv6 users and 800 GB traffic peaks, guided by long‑term strategic value, clear milestones, and engineers’ curiosity to expand IPv6‑driven service quality and cost savings.
The article explains how to isolate testing scenarios and choose appropriate testing methods for various business contexts—storefront changes, order processing, and cross‑platform integrations—by establishing baseline data, comparing results, and leveraging tools like YApi to improve quality and efficiency.
This step‑by‑step guide shows how to deploy a three‑node Kafka and ZooKeeper cluster in Docker, covering JDK installation, ZooKeeper configuration, server ID setup, Kafka download, configuration tweaks, topic management, and verification of leader‑follower relationships.
This article introduces the Barad‑Dur custom monitoring dashboard of Ant Monitoring, detailing its WYSIWYG editor, advanced interaction features, controller concept, extensible data‑source architecture, unified time‑series format, scene‑graph inspired layout engine, and future roadmap for cloud‑native observability.
This article explains how the PuYuan DevOps platform extends Jenkins pipeline tasks by categorizing atomic tasks, designing flexible database schemas for task templates and attributes, and implementing container-based environment isolation to support scalable, secure continuous integration and deployment across diverse enterprise environments.
The article outlines Meizu's transition from a music‑player company to a mobile and internet service provider, detailing the operational challenges faced across three internet eras, the development of a comprehensive automation and continuous delivery platform, and the role of big‑data‑driven insights in improving quality, efficiency, cost, and security.
The Chinese DevOps community evaluated three SaaS platforms—GitLab (free), Jira Cloud (free), and CODING (Tencent Cloud DevOps)—against requirements such as private repository collaboration, OKR management, Scrum planning, CI/CD pipelines, artifact storage, and cloud deployment, ultimately concluding that CODING offers the most suitable integrated solution.
This article explains why and how Meicai migrated its monitoring platform to Nightingale, introduces the Prometheus‑Exporter‑Collector plugin, details the data‑model conversion rules, and provides a step‑by‑step usage guide with screenshots and resource links.
This article explains what procurement is, its strategic importance, the components and architecture of a procurement management system, detailed workflow steps, and key functions such as item management, order handling, pricing maintenance, and supplier returns, highlighting how effective procurement reduces costs and boosts competitiveness.
This guide explains how to install Nginx on a Linux server, manage it with systemctl commands, verify its operation using netstat, and control related processes via ps and kill utilities, providing practical command examples for each step.
This guide explains how to manage Linux software packages using RPM, YUM, DNF and manual source compilation, covering preparation steps, repository configuration, common commands, and practical examples with full command‑line snippets.
This tutorial explains Linux user and group management, covering login prompts, user information commands, adding, modifying, and deleting users, switching users, password handling, file permission changes, and group administration with practical command examples and code snippets.
This tutorial explains Linux file and directory permission management, covering permission categories, how to view, add, revoke, and recursively apply permissions using commands such as ls, chmod, and demonstrates permission notation with examples.
This article presents a lightweight gray release approach for complex flight ticket services, comparing traditional hardware and soft‑routing isolation methods, describing the authors' traffic‑based gray identification, business‑focused monitoring, implementation details, and automated safeguards to enable safe incremental deployments.
This tutorial explains what Nginx is, how reverse proxy works, common Nginx commands, and provides step‑by‑step configuration examples for simple reverse proxy, load balancing, multiple webapps, HTTPS, static sites, file servers, and CORS handling.
Suning’s data center team completed a record-breaking migration of 26,888 servers across 75 days, detailing the planning, tight time windows, intensive communication, cross‑team coordination, risk management, and efficiency gains that enabled zero‑downtime migration and significant cost savings for future operations.
The article explains that the Jenkins "Launch agent by connecting it to the master" option, formerly called "java web start", lets agents initiate a TCP connection to the server using JNLP, details port configuration, GUI versus headless operation, and alternative launch methods.
The article details JD’s data product teams’ systematic preparation for the 618 shopping festival, covering pressure estimation, capacity expansion, stress testing, emergency downgrade strategies, dual‑data‑center isolation, high‑fidelity end‑to‑end testing, and continuous monitoring to ensure stable, real‑time data services during massive traffic spikes.
Discover five popular Docker graphical clients—Portainer, DockStation, Docker Desktop, Lazydocker, and Docui—each offering distinct features for managing containers, images, volumes, and networks, helping you choose the right tool for your workflow.
This article describes how Qunar scaled its IDC infrastructure, introduced multi‑IDC deployment, automated DNS‑based load balancing, open‑source DNSDB, and an IDC proxy built on Squid to achieve rapid fault self‑healing and transparent traffic switching for both user and third‑party access.
This article examines why traditional network‑centric NPMD tools, agent‑based APM solutions, and their combination fall short of true end‑to‑end business performance monitoring, and argues that Business Performance Monitoring (BPM) using passive traffic mirroring offers the most complete, non‑intrusive full‑link visibility for application operations.
This guide walks through systematic Kubernetes troubleshooting steps for pods stuck in Pending, Waiting, CrashLoopBackOff, or Running incorrectly, and also covers controller, service, and network debugging using kubectl commands, log inspection, validation flags, and endpoint verification.
The article details JD Digital Technology's comprehensive technical preparation for the 6.18 shopping festival, describing how 13 cross‑functional teams performed system scaling, multi‑layer performance testing, architecture upgrades, risk management, data pipeline enhancements, and 24/7 monitoring to ensure a stable, high‑throughput promotion environment.
