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.
This article explains how Yanxuan created a fully third‑party warehousing and distribution platform that supports domestic and international e‑commerce scenarios, outlines its core business, data and branding capabilities, tackles key operational challenges, and details the system’s evolution from initial setup to automated operations.
This comprehensive guide explains why monitoring is essential for operations, outlines monitoring goals and methods, reviews a wide range of open‑source tools, details a Zabbix‑based workflow, enumerates key metrics across hardware, system, application, network, security and business layers, and offers practical alerting and interview tips.
Facing unprecedented traffic during the 2020 618 shopping festival, JD Health’s product R&D team implemented comprehensive rehearsals, stress testing, architecture reviews, dual‑channel risk controls, and 24‑hour monitoring to ensure system stability and rapid response for its health‑care e‑commerce platforms.
This article outlines the importance of data quality in the big‑data era, defines evaluation criteria such as integrity, accuracy, consistency and timeliness, describes daily monitoring and reconciliation processes, and proposes technical solutions and challenges for building a comprehensive data‑quality monitoring platform.
The logistics R&D team spent 62 days preparing for the 618 promotion by analyzing core processes, applying stress tests, implementing fault‑tolerant architectures, planning capacity, and deploying real‑time monitoring tools to ensure system stability and performance under peak traffic.
Nacos 1.3.0 introduces an embedded relational database, unified cluster management, an upgraded Raft consistency protocol, and security fixes, providing simpler deployment, higher performance, and safer operations for both small‑scale and enterprise environments.
Sales teams often chase arbitrary “magic numbers” like 100 calls or 100 minutes, mistaking correlation for causation; this article explains the original meaning of magic numbers in user retention analysis, highlights statistical errors, and outlines a data‑driven four‑step process to identify true performance drivers and actionable strategies.
This article outlines a systematic, step‑by‑step approach for testers to gather evidence, reproduce, and diagnose production bugs on mobile and web platforms, emphasizing thorough data collection, environment checks, and collaborative debugging to improve response speed and reliability.
This article analyses the shortcomings of fragmented operations platforms, explains how organizational and business domain factors shape a successful ops middle platform, and presents a lifecycle‑driven, multi‑layer integration approach for building a scalable, cloud‑native operations ecosystem.
When you log into a Linux server for performance troubleshooting, Netflix’s engineering team shows that running ten standard command‑line tools within the first minute gives a comprehensive view of system load, resource saturation, errors, and bottlenecks, enabling rapid root‑cause analysis.
This guide walks through generating a self‑signed SSL certificate using OpenSSL, converting it to PKCS12 and JKS formats, placing the keystore on the Jenkins server, updating Jenkins configuration for HTTPS, and testing the secure connection.
This article walks through a practical, step‑by‑step migration of an Elasticsearch cluster from a public‑cloud environment to a self‑hosted data‑center, covering strategy, configuration changes, node role separation, manual data transfer, and post‑migration re‑enabling of automatic balancing to ensure a smooth, low‑impact transition.
This article provides a comprehensive introduction to microservice architecture, covering service decomposition, registration and discovery methods, client‑driven load balancing, rate‑limiting and circuit‑breaking strategies, and the design of a self‑built application delivery platform for cloud‑native environments.
The article compiles 2020 industry data, revealing programmer salary averages, Alibaba Cloud's second‑place global security rating, DB‑Engines database popularity, IDC's cloud services market growth, Baidu's accelerated cloud center construction, a dip in global Ethernet switch revenue, and China Mobile's massive data‑center investment.
Meituan’s MySQL database inspection system uses a three‑layer architecture—execution agents managed by Crane, a metadata‑rich inspection database, and an integrated application UI—to run 64 automated checks, resolve over 8,000 hazards with sub‑four‑day remediation, and continuously improve automation and analytics.
This article describes Ctrip's SRE team's journey in adopting chaos engineering, outlining the motivations, roadmap, concrete experiments, platform maturity, and future automation goals to improve system resilience and operational reliability in a large‑scale microservice environment.
This article describes how Ctrip’s senior testing manager designed a self‑service online performance testing solution based on a Mirror cluster, detailing its architecture, implementation steps, safety measures, result aggregation, current limitations, and overall impact on testing efficiency and reliability.
The article explains why the KEYS command can cripple a Redis instance with millions of keys, analyzes its O(n) blocking behavior, and demonstrates how to use the incremental SCAN command with MATCH and COUNT options to safely iterate key prefixes without affecting performance.
This article details the design and implementation of a unified log platform that handles peak write rates of up to one million events per second, balances performance, stability, and cost, and leverages Filebeat, Kafka, Flink, and Elasticsearch across multi‑cloud environments.
This article explains the core DevOps philosophy—including Lean, Agile, CI, CD and Continuous Delivery—describes its five‑point framework of culture, automation, lean‑agile core, measurement and sharing, and details a three‑step implementation method of fast flow, fast feedback, and continuous learning with practical practices and examples.
This article provides an extensive overview of monitoring in operations, covering its objectives, methods, core concepts, a wide range of open‑source and commercial tools, detailed metric categories, alerting mechanisms, interview tips, and recommendations for building a robust, scalable monitoring ecosystem.
Simulation enables low‑cost, time‑agnostic testing of e‑commerce supply‑chain strategies—covering procurement, inter‑warehouse allocation, and order dispatch—by combining precedent, experimentation, and modeling, offering a more flexible and comprehensive alternative to AB‑testing for evaluating policies, algorithms, and configurations.
ZMS is ZTO Express's cloud‑native message middleware platform built on RocketMQ and Kafka that automates deployment, provides a unified SDK, supports multi‑datacenter operation, and offers comprehensive monitoring, enabling seamless scaling and fault‑tolerant messaging for billions of daily events.
This article traces the origins of DevOps from Patrick Debois' early experiences, explains its evolution alongside agile and waterfall models, defines its core principles, and explores how microservices, containerization, and cloud computing enable its fast, reliable, and collaborative software delivery approach.
This guide explains how to gather Nginx access and error logs using Filebeat, Logstash, and rsyslog, and forward them to an Elasticsearch cluster for analysis, covering three practical pipelines with configuration examples and deployment steps.
This article explains Lean manufacturing concepts of value, value‑added activities, and the classifications of waste—Muda, Mura, Muri—detailing the seven classic wastes, the often‑overlooked eighth waste of unused employee creativity, and practical examples illustrating their interrelationships.
The article recounts a detailed troubleshooting process—including data verification, code review, DBA assistance, local debugging, environment comparison, logging, packet capture, service restarts, async‑to‑sync changes, load testing, and Kafka partition tuning—that ultimately identified a Kafka partition bottleneck as the cause of a sudden data‑volume decline after a new feature went live.
Grafana 7.0 introduces a revamped user experience, a unified data model, a new plugin platform, Jaeger tracing support, powerful data transformations, AWS CloudWatch Logs integration, and enterprise usage analytics, offering enhanced visualization and monitoring capabilities across major data sources.
This roundup covers why ops teams should hire more women, the low female representation in Chinese IT operations, a high‑scoring Python exam, legal cases of source‑code theft and data‑breach, a major cloud procurement in Zhejiang, plus the latest releases of Grafana 7.0 and Redis 6.0.3, and Zoom’s service change in China.
This article explains what maturity models are, why they are needed for continuous improvement, reviews several business process maturity models—including CMM and the Agile ISO Maturity Model (AIMM)—and offers guidance on selecting the most suitable model for your organization.
This article outlines five typical cloud‑host file‑loss scenarios—including tmpfs data loss after reboot, accidental rm commands, and disk damage from fio or dd—explains their causes, and provides practical prevention and recovery recommendations for operations engineers.
EMonitor, Meituan’s unified monitoring platform, extends CAT’s concepts with real‑time 10‑second aggregation, richer metric types, advanced dashboards, and seamless integration across IaaS, PaaS, and application layers, illustrating the evolution from log‑based monitoring to a comprehensive, proactive observability system.
This article details a real‑world implementation of Oracle GoldenGate for multi‑source data distribution, covering the architectural design, OGG fundamentals, operational challenges, troubleshooting steps, and future upgrade directions in a production environment.
This article describes how the QA team at ZuanZuan YouPin shifted from traditional functional testing to an assisted model by introducing HTTP DIFF for short‑flow operational features and visual UI automation for dynamic pages, as well as data‑construction and online order inspection techniques for complex order‑related scenarios.
An internal one‑stop performance testing platform was built to streamline workflow control, task management, and automated baselines, cutting test cycles by up to 80%, supporting shared resources, real‑time monitoring and future extensions for middleware automation and intelligent alerts.
This comprehensive guide explains how to enhance RabbitMQ reliability by covering confirmation mechanisms, producer and consumer configurations, queue mirroring, alerting, monitoring metrics, and health‑check commands, providing actionable steps for developers and operations teams to ensure stable message delivery.
This article explains how the open‑source Java diagnostic tool Arthas can monitor method execution with the monitor command, describes each monitoring metric, shows how to configure the sampling interval, and demonstrates the impact on response time using a concrete code example.
This article recounts a February 2020 MySQL data‑loss incident, detailing how the author identified the offending binlog, used open‑source tools like binlog2sql and MyFlash to reconstruct and restore the missing records, and reflects on operational lessons learned.
This article explains the drawbacks of the traditional software release process, introduces continuous integration, delivery, and deployment concepts, compares GitLab CI/CD with Jenkins, and outlines the architecture, configuration files, and advantages of using GitLab’s built‑in CI/CD platform.
This comprehensive guide explains why monitoring is essential for reliable operations, outlines clear monitoring objectives, walks through practical monitoring methods, compares popular open‑source tools, details a Zabbix‑based workflow, and lists key hardware, system, application, network, security, API, performance, and business metrics to track.
This guide compiles essential MySQL security steps, master‑slave replication principles, backup scripts, Linux boot overview, common port services, virus mitigation, monitoring tools, nginx optimization, InnoDB lock troubleshooting, replication lag reduction, high‑availability components, data migration utilities, and automation configuration management techniques for operations engineers.
This article presents a systematic approach to diagnosing and resolving Java runtime problems by examining CPU usage, disk I/O, memory consumption, garbage‑collection behavior, and network anomalies, offering practical commands, analysis techniques, and visual aids to pinpoint root causes in production environments.
This article documents the step‑by‑step practices of a six‑person test‑environment availability team that unified middleware, streamlined deployment pipelines, piloted business usage, introduced monitoring and recovery mechanisms, and created a comprehensive SIT environment handbook to improve integration testing stability and operational efficiency.
This page compiles a comprehensive collection of Chinese-language articles and tutorials on interface performance testing, covering tools such as netdata and timewatch, load‑testing strategies for various APIs, JVM heap dump extraction, asynchronous request measurement, and best practices for reducing test errors.
This article explains the shortcomings of the traditional software release process, introduces continuous integration, delivery, and deployment concepts, compares GitLab CI and Jenkins features, and outlines the advantages, architecture, and practical usage of CI/CD pipelines for DevOps teams.
This article provides a comprehensive, step‑by‑step methodology for building disaster‑recovery capabilities, covering business continuity planning, risk and impact analysis, design of recovery strategies, implementation phases, testing drills, and ongoing support to ensure uninterrupted business operations.
This article provides a comprehensive overview of Prometheus, covering its origins, architecture, step‑by‑step deployment, configuration, web UI usage, as well as its key advantages and limitations for cloud‑native monitoring and operations.
This guide explains why copying production traffic to pre‑release environments is beneficial, walks through installing Nginx, details the ngx_http_mirror_module configuration for traffic mirroring, and provides custom build steps and useful monitoring commands.
This article explains the principles, advantages, and drawbacks of blue‑green deployment, canary (gray) release, and A/B testing, compares their use cases, and provides step‑by‑step guidance for safely rolling out new versions in modern cloud‑native environments.
This article compiles Arthas video tutorials and explains the four basic commands—JVM, sysprop, sysenv, and vmoption—detailing what they display, their differences from built‑in JVM tools, and where to find further resources for deeper JVM parameter tuning.
This tutorial provides a beginner-friendly, step-by-step walkthrough for downloading, installing, configuring, and verifying Prometheus, Node Exporter, Alertmanager, and Grafana on a Linux server, including service setup, configuration files, and a simple alert test.
This article details the design, architecture, and operational results of a listening platform and smart ticketing system that automatically captures key user feedback, streamlines processing, and improves response times, showcasing a data‑driven approach to product management and operations.
