This article examines how 58 Home Service identified service gaps through user research, built a detailed user‑experience map, created a comprehensive SOP handbook covering image, etiquette, and behavior, and implemented training, assessment, and incentives to dramatically improve customer satisfaction and reduce complaints.
This article analyzes the performance challenges of Taobao Mini Programs, defines a multi‑dimensional experience metric, builds a standardized ops data pipeline, introduces the T2 first‑screen algorithm and a three‑stage performance model, and shares concrete optimization practices that reduced T2 from 2.7 s to 1.9 s while improving business metrics.
This article explains the core principles of DevOps, its historical development, the advantages it brings to software delivery, and practical steps for organizations to adopt a collaborative DevOps culture between development and operations teams.
Bilibili’s SRE team combines stability theory, detailed fault‑stage and operational metrics, and a unified emergency‑response platform—including on‑call scheduling, fault‑command incident commanders, automated fault portraits, and rapid post‑mortems—to transform frequent incidents into data‑driven, collaborative recoveries and lay groundwork for AI‑assisted self‑healing.
Beijing Gas’s Tongzhou Call Center project passed the Level 2 DevOps continuous‑delivery assessment, showcasing how standardized processes, a cloud‑native tool platform, and agile practices dramatically improved delivery speed, quality, and digital transformation across the organization.
The CAICT’s fourth‑batch DevOps assessment reveals that China Zhongjin Wealth’s platform passed the Excellent level, showcasing how standardized pipelines, tool empowerment, and the DevOps Capability Maturity Model dramatically boost delivery speed, quality, and competitiveness across major enterprises.
In this interview series, three industry experts explain how monitoring differs from observability, the shifts required for ops, developers, and architects, the core methodologies and technologies behind metrics, traces, and logs, and practical guidance for selecting and integrating observability tools in cloud‑native environments.
This article explains how adopting a DevOps culture—by forming true functional teams, shortening release cycles, and aligning shared goals—can resolve the conflicting objectives of developers and operations, enhance communication, and enable more frequent, higher‑quality software deliveries.
The article examines Alibaba Cloud's DNS operation platform, detailing its three‑stage evolution—standardization, automation, and intelligent automation—and how these practices achieve sub‑10 ms latency stability, zero‑downtime fault isolation, and scalable reliability for billions of daily queries.
The article presents two 2018 incidents where improper Java thread‑pool settings caused service degradation and unavailability, analyzes the root causes such as insufficient core size, unbounded queues, and missing rejection handlers, and offers practical recommendations for dynamic sizing, alerting, degradation strategies, isolation, and auto‑scaling to prevent similar faults.
This article introduces the DevOps culture and systematically categorizes a wide range of DevOps tools—including source‑code management, CI/CD, containers, cloud providers, automation, monitoring, project management, and secret management—to help teams improve productivity and collaboration.
This article describes how TAL Education Group evaluated, selected, and customized the open‑source Orchestrator tool to build a highly available, secure, and extensible MySQL HA solution that meets 99.99% uptime, data‑integrity, cross‑datacenter, and operational automation requirements.
When a Linux server raises a disk‑space alarm, this guide shows step‑by‑step how to locate the offending directories or files using df, du, find, lsof and tune2fs, and explains why reported usage may differ from summed directory sizes.
This article explains what Site Reliability Engineering (SRE) is, why it was created, the challenges in hiring SREs, and breaks the role into three layers—Infrastructure, Platform, and Business—detailing their duties, deployment processes, on‑call practices, SLI/SLO management, incident post‑mortems, capacity planning, user support, and career advice.
This article explains what SRE is, why it was created, how its responsibilities differ across companies, and breaks the work into Infrastructure, Platform, and Business SRE while covering deployment, on‑call, SLI/SLO, incident post‑mortems, capacity planning, user support, and career advice.
This article explains common configuration challenges in microservice applications and introduces Alibaba Cloud's AHAS feature switch as a lightweight, dynamic configuration framework that offers zero‑code integration, strong type validation, persistent storage, and non‑intrusive deployment for real‑time business control.
The document outlines the background, vision, current status, technical research, value, product and technical architecture, and functional design of a cloud‑native monitoring platform that integrates SkyWalking and Prometheus to provide comprehensive APM, resource utilization, alerting, and rapid fault localization for business and technical middle‑platform services.
This article explains Site Reliability Engineering (SRE), covering its origins, core responsibilities, key concepts such as SLI/SLO/SLA and error budgets, the four golden monitoring metrics, risk analysis, and practical guidance on building reliable services using tools like Prometheus and Grafana.
This guide compiles a comprehensive set of Linux commands—using awk, grep, netstat, and other tools—to help you count unique IPs, rank page visits, filter bots, monitor connection states, calculate bandwidth, and identify high‑traffic or error‑prone resources from Apache or Nginx logs.
The article presents a comprehensive analysis of marketing‑related financial loss cases, outlines the design and implementation of a non‑intrusive, event‑driven Marketing Guard system with dual‑layer ES‑HBase storage, and discusses its operational safeguards, achievements, shortcomings, and future development plans.
The article explains that many organizations fail to achieve the promised business value of DevOps because they overlook four critical factors—leadership, organizational structure, value‑stream mapping, and regular pulse checks—and provides concrete recommendations to address each area.
This guide explains how to enable the nginx‑status module, configure Nginx to expose metrics, collect them with Telegraf, store them in InfluxDB, and visualize the data in Grafana, providing a complete end‑to‑end monitoring solution for Nginx servers.
This article walks through a real call‑center outage scenario, outlines systematic fault‑identification steps, practical emergency recovery actions, monitoring enhancements, concise emergency‑plan design, and introduces intelligent event‑handling to help operations teams resolve incidents faster and more reliably.
The article argues that launching a brand‑new project using microservices often incurs excessive infrastructure, cultural, and operational costs that outweigh the touted benefits, and suggests that a well‑designed modular monolith can be a more pragmatic alternative for many teams.
The article explains why, despite cloud services, enterprises still need to develop their own database middleware to ensure multi‑cloud compatibility, vendor neutrality, high availability, and scalable performance, detailing the challenges, design principles, core features, technical metrics, and operational benefits of such a solution.
This article examines TAL Education's hybrid‑cloud journey, explaining what hybrid cloud is, presenting industry adoption statistics, detailing the company's initial network chaos, outlining governance difficulties, describing the first‑phase remediation measures, and outlining the objectives and methods for the second‑phase transformation.
This article systematically presents thirty architectural patterns—covering management, monitoring, performance, scalability, data handling, design, messaging, resilience, and security—to help engineers design, implement, and operate robust, high‑performance distributed systems.
GitHub experienced multiple service outages over recent weeks due to resource contention in its MySQL1 cluster, leading to prolonged downtimes, and the company disclosed detailed timelines, root causes, and ongoing mitigation measures such as load audits, traffic shifting, and infrastructure scaling to prevent future incidents.
This article explains DevOps as a cultural, organizational, and technical shift that unifies development, operations, and quality assurance, outlines its benefits such as faster delivery and improved reliability, describes key practices like CI/CD, multi‑environment deployments, early failure detection, rollback, policy enforcement and observability, and discusses its potential drawbacks and considerations.
This guide explains how to adjust node quotas, tune kernel parameters, configure high‑availability etcd clusters, and set optimal Kube‑APIServer and Pod settings for large‑scale Kubernetes deployments, ensuring stability and performance as the cluster grows.
This article reviews several free Docker graphical user interface (GUI) tools—including Portainer, DockStation, Docker Desktop, Lazydocker, and Docui—detailing their platform support, feature sets, Docker version compatibility, and practical usage scenarios for streamlined container administration.
This guide walks through essential Kubernetes operations—from node kernel upgrades and Docker daemon tuning to pod resource limits, scheduling policies, health probes, logging standards, and comprehensive monitoring—providing practical commands and configurations to keep clusters stable and observable.
This article traces the development of open‑source monitoring solutions from early tools like Nagios and Cacti through modern platforms such as Prometheus and Nightingale, comparing their strengths, weaknesses, and typical use cases while also looking ahead to emerging observability trends in cloud‑native environments.
The article reports on the fourth draft discussion of China’s Cloud Computing Intelligent Operations (AIOps) Capability Maturity Model – Part 2, detailing the meeting’s participants, the finalized system and tool technical requirements, and the progress toward a comprehensive AIOps standard that addresses quality, cost, efficiency, and security across multiple functional modules.
After setting up an Nginx cluster, this guide explains how to enable the nginx-status module, collect metrics with Telegraf, store them in InfluxDB, and visualize the data using Grafana, providing a complete solution for real-time Nginx monitoring.
The author explains how they distinguished test automation from automated testing, identified monitoring pain points, built a custom scraper‑driven alert system with three escalation levels, tackled common pitfalls, and achieved faster, more reliable performance testing alerts.
This article explains why the rise of Kubernetes as a cloud‑native standard brings new observability challenges, outlines how eBPF enables non‑intrusive, multi‑language, multi‑protocol data collection, and describes a comprehensive monitoring stack—including golden metrics, service topology, tracing, alerts, and network diagnostics—to achieve end‑to‑end visibility in complex Kubernetes deployments.
This article presents a comprehensive catalog of thirty architectural patterns—including management, monitoring, performance, data management, design, messaging, resilience, and security modes—explaining their purpose, typical use cases, benefits, and implementation considerations to help engineers build robust, high‑performance distributed applications.
The article examines the growing complexity of multi‑cloud and hybrid cloud environments, identifies security, API, and logging challenges, and proposes a flexible, cloud‑neutral automation platform with clear communication, audit, planning, and incremental implementation steps to reduce operational overhead and cost.
The article outlines Ant Group's multi‑stage journey of building large‑scale distributed system stability, describing architectural evolutions, risk‑inspection mechanisms, high‑availability solutions such as LDC and fine‑grained traffic scheduling, and intelligent risk‑defense products that together enable resilient, cost‑effective operations.
This article details the background, overall architecture, iterative improvements, and future directions of JD Daojia's order timeliness system, covering early limitations, business‑driven challenges, solution iterations, order‑control mechanisms, product‑dimension handling, and the final business architecture to enhance fulfillment rates and user experience.
This article presents a curated list of practical Linux operation tools—including Nethogs, IOzone, IOTop, IPtraf, IFTop, HTop, NMON, MultiTail, Fail2ban, Tmux, Agedu, NMap, and Httperf—detailing their purpose, download links, installation commands, and basic usage to help system administrators improve monitoring, performance testing, and security on Linux servers.
This article outlines nine key DevOps metrics and KPIs—including the four DORA indicators and five additional measures—explaining how they help teams monitor performance, improve delivery speed, ensure quality, and maintain reliable, high‑availability applications.
After moving an application to a PaaS platform, intermittent 502 errors occur, seemingly only for POST requests, but the root cause lies in Nginx‑Ingress and uwsgi HTTP version mismatches, connection reuse, and retry behavior, which can be diagnosed through traffic analysis and configuration changes.
This article breaks down Kubernetes troubleshooting into three essential steps—understanding the failure, managing the response, and preventing recurrence—while mapping key monitoring, observability, and incident‑response tools to each phase for reliable cloud‑native operations.
This article systematically explains the relationships among high concurrency, high availability, performance, and scalability, defines their quantitative metrics, categorizes sources of change that affect system reliability, and outlines strategies for fault prediction, impact reduction, and rapid recovery in large‑scale services.
This article examines how three leading Chinese insurance companies used the nationally‑backed DevOps Capability Maturity Model to evaluate and improve their IT operations, detailing project architectures, cloud‑native implementations, continuous‑delivery results, and the broader significance of the DevOps standard.
This guide walks through deploying static files with Nginx, configuring location blocks and regex patterns, setting up reverse proxy to Java services, implementing various load‑balancing strategies (round‑robin, weight, ip_hash, fair, url_hash), separating static and dynamic content, and using essential directives such as return, rewrite, error_page, logging, deny, and built‑in variables.
This article reviews how leading Chinese telecom operators adopted the CAICT‑led DevOps Capability Maturity Model, detailing 17 evaluated projects across companies, the improvements achieved in continuous delivery, technical operations, and tooling, and the broader impact on IT efficiency and digital transformation.
The article introduces a new R&D efficiency metric—throughput standard deviation—explains its statistical basis, shows how it was derived from annual reports, illustrates its application across multiple teams, and discusses practical insights and limitations for software development operations.
This article reviews how major Chinese joint‑stock banks have adopted the CAICT‑led DevOps Capability Maturity Model, detailing assessment numbers, case studies of each bank's DevOps implementation, and the model’s standards and industry impact.
Amid a nationwide digital transformation push, Chinese banks such as Ningbo, Zhengzhou, Baixin, and others have leveraged the China Information and Communication Research Institute's DevOps Capability Maturity Model to assess and improve their IT efficiency, team integration, and continuous delivery practices, providing valuable industry insights.
This article explains the most important DevOps metrics—such as deployment frequency, lead time, automated test pass rate, change failure rate, MTTR, and others—and how tracking them helps teams improve software delivery speed, quality, and operational efficiency.
This article outlines how major Chinese banks have adopted the CAICT‑led DevOps Capability Maturity Model, presenting assessment counts across state‑owned, joint‑stock, and city commercial banks, summarizing the model’s standards, evaluation domains, and providing contact details for further inquiries.
This article reviews how major Chinese state‑owned banks applied the China Academy of Information and Communications Technology’s DevOps Capability Maturity Model, detailing assessment numbers, case studies of e‑life, AI advisory, mobile banking, and cloud‑native platforms, and highlighting the operational and security benefits achieved.
This article compiles 109 practical shell scripts covering a wide range of Linux automation tasks such as security, monitoring, backup, deployment, and system management, providing clear, copy‑ready code for hands‑on practice and interview preparation.
This article analyzes 502 Bad Gateway errors caused by SSL handshake failures in Nginx, presents the relevant error logs and curl output, and provides a detailed configuration example—including buffer sizes, client limits, and proxy settings—to fix the issue.
This collection compiles dozens of Chinese articles on performance testing, covering tools, frameworks, case studies, and techniques such as netdata monitoring, load generators, concurrency utilities, distributed testing, QPS modeling, and comparisons of JMeter, K6, Gatling, and FunTester.
This guide walks through the step‑by‑step process of restoring a Ceph 16 cluster when a node's system disk fails, covering host removal, node re‑initialization, Docker and Cephadm installation, host addition, labeling, OSD recreation, and final verification.
This article traces the evolution of DevOps from its roots in Toyota’s Production System and early manufacturing practices through the emergence of Kanban, Waterfall, Scrum, Agile, Lean, and modern extensions like ChatOps, GitOps, FinOps and AiOps, highlighting key milestones and concepts.
This guide introduces the most effective project management charts—including Gantt, burn‑down, WBS, HOQ, RACI, matrix, PERT, mind‑map, decision‑tree, and status tables—explaining their purpose, key components, and how to create them with common tools like Excel, Visio, and Xmind.
Facing rapid business growth and evolving mobile, AI, and automotive trends, the Home quality assurance team outlines its testing cloud platform’s three‑layer architecture, current capabilities such as performance, automation, and code scanning, the challenges it confronts, and its roadmap for expanding Paas and mobile testing.
This guide explains how to create a Spring Boot Admin server, configure a Spring Boot client to register with it, enable Actuator for extended metrics, and view real‑time logs, providing a comprehensive monitoring solution for Java backend services.
This article provides a step‑by‑step tutorial for installing, configuring, and running a JVM monitoring solution that integrates with Spring Boot, covering repository cloning, server configuration, Maven installation, application property setup, and accessing the monitor server UI.
The article details the background, challenges, multi‑year evolution, current architecture, and future roadmap of Hickwall, Ctrip's enterprise‑grade monitoring and observability platform, covering metrics, logs, traces, high‑cardinality handling, cloud‑native integration, alert governance, and storage engine migrations.
After a traffic surge exposed severe latency in a 15-year-old multi-service web platform, we used monitoring to discover a DB-connection leak caused by a liveness probe, corrected it, and distilled four practical lessons on latency metrics, tooling, legacy maintenance, and code vigilance.
This article explains why securities firms must adopt comprehensive, centralized monitoring, outlines regulatory and SLA drivers, identifies common monitoring shortcomings, and provides a step‑by‑step guide using open‑source solutions like Zabbix and Grafana to design, implement, evaluate, and continuously improve monitoring management.
Elon Musk presented new Starship performance data, outlined a goal of up to 50 launches this year and three daily launches in the future, described the spacecraft’s dimensions, propulsion, heat shield and orbital refueling technology, and reiterated his long‑term vision of making humanity a multiplanet species by colonising Mars.
This guide outlines a comprehensive, three‑stage IPv6 migration roadmap—including network upgrades, DNS/HTTPDNS redesign, security hardening, cloud and CDN adaptation, and mobile/app adjustments—to achieve full IPv6‑only support across infrastructure, services, and end‑users while ensuring seamless performance and security.
A production incident on an elastic‑cloud deployment revealed that setting the JVM Metaspace limit to 64 MiB, while the application required around 76 MiB, triggered continuous Full GC, causing stop‑the‑world pauses, full‑line time‑outs, and a costly rollback.
The article explains common release strategies—including blue‑green deployment, rolling updates, canary (gray) releases, and A/B testing—detailing their principles, advantages, limitations, and practical considerations for safely delivering new versions in production environments.
This article explains how Zabbix monitoring can be extended with custom shell or Python scripts to gather business-specific metrics, demonstrates a sample script that checks disk usage, and provides three methods to resolve a stale NFS file handle error, including using fuser, process inspection, and forced unmount.
This article shares CoolHome’s comprehensive SaaS project delivery framework, detailing each phase—from initiation and planning to execution, monitoring, and closure—while highlighting common pitfalls, improvement measures, and practical tips for managing large‑client engagements effectively.
In 2021, Xinwang Bank’s digital-native team tackled tight deadlines, tool migrations, personnel shifts, and intense debates to successfully achieve a Level‑3 DevOps continuous‑delivery assessment for its distributed consumer‑credit core system, demonstrating how coordinated effort and containerization can boost operational excellence.
This article shares hard‑won lessons from optimizing fifteen high‑load web applications, highlighting how a tiny DB‑connection leak in a pod probe caused severe slowdown and how fixing it, along with proper load testing, monitoring, and investment in tools and people, can dramatically improve system performance.
The article reviews ten significant 2021 internet outages—both domestic and international—analyzing their root causes, from server room power failures to configuration bugs, and highlights the operational lessons engineers can learn to improve system resilience.
This article walks through a real call‑center outage scenario, outlines step‑by‑step fault identification, emergency recovery actions, monitoring enhancements, concise emergency‑plan design, and introduces intelligent, automated event handling to help operations teams resolve incidents faster and more reliably.
This article explains why Redis needs high availability, defines failure scenarios, compares several HA architectures—including single‑instance, master‑slave with one or multiple Sentinel processes, and a three‑node solution with a virtual IP—and provides practical guidance for building a reliable Redis service.
This article compiles the 2021 Qunar Technical Salon infrastructure series, presenting original technical writings on databases, operational practices, and core components, each linked to detailed posts that share real‑world experiences, design guidelines, and performance insights for engineers and practitioners.
The article provides a comprehensive overview of payment‑system clearing and reconciliation, detailing fund inflow/outflow matching, reconciliation center functions, various one‑to‑one, many‑to‑many and one‑to‑many matching rules, data import, error handling, and auxiliary modules such as balance entry and abnormal data recovery.
This guide explains how to integrate ELK's Logstash with Zabbix using the logstash‑output‑zabbix plugin, covering installation, configuration of Logstash pipelines, Zabbix template and trigger setup, and testing the end‑to‑end alerting workflow.
This article analyzes the challenges of offline recruitment stores, explores why job seekers drop out or feel dissatisfied, presents user research from Chongqing, identifies critical service moments, and proposes concrete design strategies to improve the hiring experience and operational efficiency.
This article explains how to monitor, collect, and analyze real‑time logs, use multi‑dimensional metrics, perform local debugging, and enable cloud‑edge debugging for Spring Boot applications running on a Serverless platform, providing step‑by‑step commands and visual guides.
This comprehensive guide traces the evolution of open‑source monitoring solutions from the early 2000s to modern cloud‑native tools, comparing their strengths, weaknesses, and ideal deployment scenarios to help IT professionals select the most suitable monitoring product for their infrastructure.
This article analyzes the structure of black production in the real estate industry, focusing on its impact on companies like 贝壳 and the countermeasures implemented to combat it.
This article introduces essential Redis operational tools, covering the INFO command for monitoring, Prometheus‑based redis‑exporter visualization, the Redis‑shake data migration utility, Redis‑full‑check consistency verification, and the CacheCloud platform for comprehensive cluster management.
The article shares a comprehensive methodology for MySQL database inspection, classifying checks by method, time and depth, and detailing availability, reliability, and performance best‑practice items along with concrete command examples and configuration recommendations.
This article explains how to design and implement a terabyte‑level log monitoring platform using ELK Stack, FileBeat, Elastic APM, Kafka Streams, Prometheus, and Grafana, covering data collection, filtering, visualization, and resource‑efficient processing for large‑scale microservice environments.
This article explains how to use Filebeat and Graylog together for centralized log collection, covering Filebeat’s role, configuration files, input modules, Graylog’s architecture, pipeline rules, and step‑by‑step deployment using Docker and docker‑compose, providing practical commands and examples for operational environments.
This article enumerates the most common Linux system log files under /var/log, explains the purpose of each log—including messages, dmesg, auth, boot, daemon, and service-specific logs—and lists key subdirectories for web, mail, audit, and other services.
The article examines the repeated failures of the Xi'an health‑code platform, explaining that the root cause lies in serving all static assets (JS, CSS, images) from a single un‑CDN endpoint, which under peak load of 33 000 requests overwhelms the network bandwidth, leading to a crash.
By analyzing user demographics, business model, and marketing needs, the 58 Daojia case study shows how constructing a cohesive 3D‑driven worldview—through gene‑family characters, mood‑board visual systems, and story‑centric design—enhances operational campaigns, boosts brand immersion, and streamlines visual asset reuse.
This guide walks through installing Prometheus and Node Exporter on a Linux server, copying binaries to system paths, configuring Prometheus with scrape jobs for the local node and remote hosts, and running the exporters with specific collector options for system metrics.
This article describes the design and implementation of a comprehensive log tracking system for a phone SDK, covering client‑side logging, colored classification, plugin mechanisms, cloud‑native architecture, serverless functions, Elasticsearch storage, and real‑time visual debugging to enable rapid issue identification and resolution.
The article explains how a collaborative effort by CAICT and more than 30 leading tech and financial companies created the most comprehensive DevOps efficiency measurement model, detailing its components, evaluation results, and upcoming assessment enrollment for enterprises seeking to boost software development performance.
This article introduces essential Redis operational tools, covering real‑time monitoring with the INFO command and exporters, data migration using Redis‑shake, consistency checking via Redis‑full‑check, and cluster management through CacheCloud, while highlighting key metrics such as stat, commandstat, cpu, and memory.
This article explains the concept of gray release, outlines a simple architecture with essential components, describes common traffic-splitting strategies, shows how to implement control in Nginx and service layers, and discusses complex scenarios such as multi‑service and data‑centric deployments.
This article presents a concise collection of ten Chinese-language resources that summarize the 2021 DORA DevOps report, the importance of consistency in R&D, fundamental efficiency principles, Microsoft’s testing shift, Google’s release and productivity metrics, and SRE health measurements, offering valuable insights for modern software engineering teams.
This article explains how cloud‑native teams can adopt chaos engineering—defining its concepts, outlining its unique characteristics, and detailing a four‑stage implementation process from manual drills to production‑level raids, with practical steps, environment setups, and real‑world results.
This article describes how the open‑falcon monitoring system is applied and customized at Automotive Home, covering its architecture, component roles, a comparison with other open‑source solutions, and the enhancements made for service‑tree based dynamic monitoring, alerting, self‑healing, and high‑availability deployment.
