This article provides a comprehensive guide to DBLE's built‑in commands for viewing system information, diagnosing faults, and performing maintenance tasks such as killing connections, reloading configurations, and managing sharding nodes, helping MySQL DBAs efficiently operate distributed database clusters.
This article provides a comprehensive, hands‑on tutorial for installing and configuring Zabbix 5 on CentOS 7, covering system overview, key terminology, disabling SELinux and firewalls, setting up repositories, installing server, agent, frontend, MariaDB, database initialization, configuration tweaks, and final web‑UI setup.
This article traces the emergence and evolution of Newhua County’s copy‑printing industry—from 1960s typewriter repairs to a nationwide network of repair shops, second‑hand markets, and equipment manufacturing—highlighting its social roots, ladder‑style development, research methods, key findings, and lasting impact on China’s office‑equipment sector.
This article explains how to configure Kubernetes liveness, readiness, and startup probes using exec, HTTP, and TCP checks, demonstrates practical YAML examples, shows how probes affect pod lifecycle events, and provides best‑practice recommendations to avoid common pitfalls.
The article recounts a staged rollout of the Maybach service on elastic cloud, details the timeline of successful and failing deployments, analyzes JVM metrics revealing excessive Metaspace usage that triggered continuous full garbage collections, and explains how this caused system‑wide timeouts and a half‑hour outage.
This article examines how three major Chinese insurance firms applied the CAICT DevOps Capability Maturity Model to improve IT efficiency, integrate teams, and accelerate continuous delivery, highlighting architectural innovations, cloud adoption, and measurable performance gains across distributed core systems, e‑commerce platforms, and agricultural claims solutions.
This article provides a comprehensive, step‑by‑step explanation of every Dockerfile instruction—including variables, FROM, RUN, CMD, LABEL, EXPOSE, ENV, ARG, ADD, COPY, ENTRYPOINT, VOLUME, STOPSIGNAL, HEALTHCHECK, SHELL, WORKDIR, and USER—along with syntax details, usage tips, and practical code examples for building efficient container images.
This article shares a collection of powerful kubectl commands and techniques—including API debugging, status‑based pod filtering and deletion, node‑specific pod listing, pod distribution statistics, and proxy usage—to help Kubernetes operators work more efficiently and avoid manual API scripting.
This article extends previous Elasticsearch cheat sheets with practical commands and step‑by‑step instructions for shard allocation, replica adjustment, cluster settings, slow‑log configuration, mapping routing, force merge, bulk writes, refresh intervals, translog durability, heap sizing, disk‑space monitoring, and troubleshooting strategies.
Drawing from three and a half years of system administration, this article outlines practical guidelines for safe online operations, data protection, server security, continuous monitoring, performance tuning, and the right mindset to avoid costly mishaps in production environments.
This article reviews the China Academy of Information and Communications Technology's DevOps Capability Maturity Model, shows how major state‑owned banks have participated in 39 assessments, and presents detailed case studies illustrating each bank's DevOps adoption, challenges, and outcomes.
This article details how leading Chinese telecom operators have adopted the CAICT‑led DevOps Capability Maturity Model, evaluating 17 projects across multiple companies to improve IT efficiency, integrate resources, and support business systems, showcasing concrete performance gains and best‑practice insights.
This article explains how to implement graceful shutdown and startup for microservices using JVM shutdown hooks, Spring Boot's built‑in mechanisms, Docker stop signals, and external containers like Jetty, providing code examples and best‑practice recommendations for ensuring services deregister, reject traffic, and start only after health checks succeed.
This article examines how major Chinese state‑owned banks applied the CAICT DevOps Capability Maturity Model to improve IT efficiency, integrate resources, and support business systems, detailing assessment numbers, project implementations, challenges, and outcomes across continuous delivery, security, and toolchain standards.
This article outlines how major Chinese banks have adopted the CAICT-led DevOps Capability Maturity Model, presenting participation numbers, describing the standard’s development and global significance, and providing contact details for further engagement.
This article introduces Arthas, a Java online diagnostic tool, explains its instrumentation‑based runtime principle, guides installation on various platforms, and provides a comprehensive command reference—including basic, system, class, and enhancement commands—for effective debugging, monitoring, and performance analysis of Java applications.
Taobao redesigned its mobile client’s diagnostics and logging architecture—introducing scenario‑based monitoring, standardized log protocols, snapshot collection, and change‑tracking SDKs—to meet a 5‑minute response, 15‑minute identification, and 60‑minute recovery goal, dramatically improving issue detection, analysis, and resolution efficiency.
The article demonstrates how to use MySQL error logs and gdb to trace a crash‑related bug, identify the affected function in the source code, compare version histories on GitHub, and confirm that the issue was fixed in MySQL 8.0.20.
In a detailed interview, Henan Zhongyuan Consumer Finance explains how its new generation consumer loan system achieved the industry‑first Level‑3 DevOps continuous delivery assessment, highlighting the standards, tools, performance metrics, challenges overcome, and future plans that together illustrate the transformative power of standardized DevOps practices.
CITIC Securities’ CIO Xiao Gang discusses how their outsourced service platform achieved Level‑3 DevOps continuous delivery assessment, detailing the motivations, implementation challenges, measurable improvements, and future plans, while highlighting the broader significance of the national DevOps maturity model for the financial sector.
The interview reveals how Haitong Securities leveraged the national DevOps standard assessment to transform its software development, achieving level‑3 continuous delivery maturity, accelerating release cycles, improving quality, and outlining future DevSecOps and industry‑specific standardization plans.
The article details how JiAnXin FinTech’s YaoGuang Agile Development Platform achieved an excellent rating in China’s first national DevOps standard evaluation, sharing interview insights on platform architecture, the importance of end‑to‑end toolchains, future DevOps trends, and the tangible benefits realized after the assessment.
This guide explains how the Linux nologin command can politely deny user logins, log attempts, and provides multiple methods—including command-line usage, password locking, and /etc/passwd modifications—to restrict login access for specific or all users during system maintenance.
The article explains why large‑scale services must conduct production full‑link load testing, describes its evolution from ad‑hoc trials to standardized monthly practices, and details the technical and procedural steps—including traffic modeling, JMeter usage, middleware tagging, and responsibility mapping—that ensure reliable capacity planning and risk mitigation.
This article shares practical standards for Kubernetes operations—including infrastructure, application, artifact, and CI/CD guidelines—to help teams simplify management, improve reliability, and foster continuous learning and sharing in fast‑moving cloud environments.
Through a detailed case study, the author documents the process of optimizing a Python‑based web module—identifying bottlenecks, redesigning architecture with Redis queues, tuning MySQL, adjusting Linux TCP settings, and iteratively load‑testing until achieving 50,000 QPS with sub‑70 ms latency and zero errors.
This article walks through common interview questions on Linux memory inspection and cache clearing, explains the fields shown by the free command, and then delves into SQL join types, performance bottlenecks, buffer settings, and practical optimization techniques for MySQL databases.
The article explains how lean value‑stream analysis uses meaningful metrics such as lead time, process time and percent complete & accurate, outlines a step‑by‑step workflow for mapping and evaluating value streams, and demonstrates the approach with a department‑level case study and radar‑chart analysis.
This guide introduces HAProxy, an open‑source L4/L7 load balancer, and walks through its core features, performance and stability characteristics, step‑by‑step installation on CentOS 7, configuration of both L7 and L4 balancing, monitoring, and setting up high‑availability with Keepalived.
This article explores how ops engineers can select suitable cloud platforms, evaluate major IaaS providers, choose appropriate programming languages, and implement effective load‑balancing solutions such as LVS, Nginx, HAProxy, and Alibaba Cloud SLB to ensure stable, scalable cloud operations.
This article explains what Nginx is, why it’s chosen for high‑performance reverse proxy and load balancing, walks through its event‑driven architecture, core configuration directives, virtual host setups, location regex rules, static‑dynamic separation, rate‑limiting techniques, load‑balancing algorithms, high‑availability settings and practical code examples.
This article analyzes the Ganjian Salary Wish Festival as a case study of operational marketing, exploring industry insights, audience targeting, brand messaging, benefit‑driven conversion, interactive game design, and data results to reveal how such activities can sustainably retain users beyond simple incentives.
This article traces the history of the Chinese "mid‑platform" concept, outlines how major tech firms implement various middle‑platform strategies, distinguishes front‑end, back‑end, and middle layers, categorizes platform types, and highlights common pitfalls and organizational challenges in building such platforms.
This article explains the need for a messaging system, explores Kafka's core concepts, cluster architecture, performance optimizations like sequential disk writes and zero‑copy, and provides detailed guidance on sizing hardware, configuring producers and consumers, and managing a production Kafka deployment.
This guide outlines how to prepare large‑scale Kubernetes clusters on public clouds by increasing node quotas, adjusting kernel parameters, configuring high‑availability etcd with the etcd‑operator, tuning kube‑apiserver settings, and applying pod‑level best practices for resource limits and affinity.
This article explains that chaos engineering is not a magic cure but a disciplined practice for testing distributed systems by designing and running controlled experiments, outlining four essential steps—observability, defining steady state, hypothesizing events, and executing experiments—to gain confidence in system resilience.
Microsoft Digital describes how Microsoft’s internal IT organization, renamed from CSEO to Microsoft Digital, drove a comprehensive digital transformation by migrating operations to Azure, adopting cloud‑centric architecture, implementing DevOps, enhancing security, data, and AI capabilities, and aligning vision‑driven priorities to boost productivity, customer focus, and business outcomes.
The article provides an overview of ByteDance's massive data center infrastructure, detailing server quantities, total outbound bandwidth reaching several terabits, the role of dual‑link designs, and how CDN acceleration enables billions of users to access Douyin and related services smoothly.
Qunar shares how it built a large‑scale chaos engineering platform for thousands of microservices, detailing tool selection, architecture, evolution stages, fault‑injection scenarios, strong/weak dependency automation, open‑source contributions, and future plans for automated random drills.
This guide presents a comprehensive set of mandatory, reference, and recommended Redis usage standards—including command restrictions, key naming, data sizing, persistence configurations, monitoring, and deployment strategies—to improve performance, reliability, and operational efficiency for production environments.
This article describes Alibaba’s comprehensive SRE system for managing ultra‑large‑scale big data engines, detailing stability metrics, resource cost management, and intelligent operation productization, and introduces speaker Fu Tianyuan, a senior operations expert leading the MaxCompute and DataWorks SRE team.
The article examines Salesforce’s five‑hour global outage caused by a shortcut DNS deployment and the subsequent recovery challenges, then explores a viral experiment where twenty smartphones generated artificial traffic congestion, illustrating how real‑time data feeds and operational safeguards can prevent large‑scale service disruptions.
This guide compiles a comprehensive set of Linux commands, Java troubleshooting utilities, JVM options, and IDE plugins that help developers diagnose performance issues, resolve jar conflicts, and monitor production systems efficiently.
The article emphasizes that a CI/CD pipeline must be the exclusive route for deploying immutable artifacts to production, warning against direct local deployments, highlighting risks of lost traceability, and urging strict network-level controls to ensure only the pipeline can release code.
Mobile API gateways act as protocol adapters between networks, centralizing services for mobile apps; the article explains their role at Alibaba, the evolution of R&D efficiency through unified programming models and SDKs, large‑scale platform development, high‑availability strategies, and the EMAS top‑level model for mobile development.
This article introduces a curated list of open‑source MySQL operational tools—including online DDL changers, backup and restore utilities, load‑testing frameworks, flashback solutions, slow‑query analyzers, replication consistency checkers, audit platforms, and graphical clients—explaining their principles, usage scenarios, and visual references.
This article explains system availability, outlines three stages of incident handling, identifies key factors that degrade availability such as human error, avalanche effects, untested releases and infrastructure failures, and proposes technical and team‑oriented practices to enhance reliability and achieve higher "nines" of uptime.
This article examines Coinbase's decision to avoid Kubernetes, tracing container technology history, outlining the operational and security challenges of orchestration platforms, and detailing the company's custom Odin+ASG solution and future considerations for container management.
This guide walks beginners through understanding logs, using them for error tracing, applying monitoring and alerts, and performing remote debugging to quickly pinpoint and resolve production problems, emphasizing practical steps and best practices for reliable system maintenance.
On July 15, 2021, the China Academy of Information and Communications Technology unveiled the 2021 China DevOps Status Survey Report, detailing the nation’s digital transformation, the growing demand for rapid software delivery, the extensive multi‑company survey methodology, and key findings on DevOps adoption and future trends.
Severe flooding in Zhengzhou crippled core telecom facilities, prompting emergency repairs, backup HLR deployment, and temporary authentication shutdowns, while highlighting the critical role of network resilience and disaster‑recovery strategies for maintaining communication services during natural disasters.
Over a month of systematic JVM tuning reduced Full GC from 40 times per day to once every ten days and halved Young GC duration by adjusting heap sizes, survivor ratios, and metaspace settings while investigating and fixing a memory leak caused by an anonymous inner class listener.
This guide outlines a comprehensive backend technology stack for startups, covering language choices, core components, development processes, infrastructure services, database options, monitoring, CI/CD, and operational best practices to help teams design, select, and implement a reliable server-side architecture.
Discover a comprehensive Redis best‑practice guide covering memory optimization, performance tuning, high reliability, daily operations, resource planning, monitoring, and security, with actionable tips such as key length control, maxmemory settings, lazy‑free, connection pooling, replication strategies, and safe deployment practices.
This guide walks through the concepts of ELK, why log management is essential for Kubernetes, three collection strategies, required log fields, and step‑by‑step deployment of Elasticsearch, Kibana, Filebeat, and Logstash—including YAML manifests, configuration snippets, and Kibana UI setup—for a fully operational, cloud‑native logging solution.
This article examines the challenges faced by a search middle platform—such as inaccurate impact assessment, unstable underlying clusters, and missing process standards—and details a comprehensive quality‑assurance strategy that includes baseline test suites, stability practices, performance testing, emergency drills, and systematic monitoring to ensure reliable search services.
Dust is a Rust‑written, visually rich replacement for the traditional du command that shows directory sizes as a colored tree, making it easier to spot large folders and understand disk consumption at a glance.
Ansible, a rapidly popular open‑source automation tool built on Python, simplifies batch system configuration, program deployment, and command execution with thousands of built‑in modules, offering a beginner‑friendly yet powerful solution for modern operations teams.
In this article, a programmer recounts the recent Bilibili outage, analyzes its timeline, proposes technical root‑cause hypotheses such as CDN failure and service‑chain avalanche, shares insights from the platform’s high‑availability architecture, and outlines preventive techniques for building more resilient backend systems.
This article details a practical smooth‑release process for a cloud‑office system, explains how to use Nginx health‑check endpoints to take instances offline, and presents three AB‑testing routing strategies—IP‑based, cookie‑based, and AB‑cluster proxy—complete with configuration examples, pros and cons, and deployment steps.
The article analyzes Bilibili’s recent service outage, explains why high availability matters, introduces key metrics like MTBF and MTTR, and outlines practical strategies such as redundancy, rate limiting, isolation, failover, timeout control, circuit breaking, degradation, and multi‑region deployment to build resilient systems.
This article describes Baidu's comprehensive approach to monitoring game microservices, covering the background, initial monitoring tools, evolution of the monitoring system, systematic design for risk control, intelligent detection, alarm optimization, efficient fault localization, and future outlook for high‑availability architecture.
The article analyzes Bilibili's recent half‑hour service disruption, explores technical rumors such as an etcd crash, examines Kubernetes‑based cloud‑native infrastructure, reviews similar historic outages, and offers expert recommendations for improving high‑availability and disaster‑recovery in large‑scale internet services.
This guide walks through practical troubleshooting steps for typical production incidents—including disk exhaustion, high CPU, Java OOM, MySQL deadlocks and slow queries, Redis memory alerts, network TCP issues, and business‑log analysis—providing concrete commands, diagrams and mitigation strategies for each layer.
This article details Baidu's comprehensive microservice monitoring practice for its game platform, covering the initial fragmented setup, systematic redesign across risk control, intelligent monitoring, smart alerting, and rapid fault localization, and presents the resulting monitoring architecture, visualizations, and future improvement goals.
This article outlines practical shell‑script guidelines for automating system and application operations, covering script header conventions, formatting, error handling, safe use of commands, variable handling, file packaging, pipeline restrictions, concurrency locks, logging, and risk‑mitigation strategies to make automation both efficient and secure.
This guide outlines essential incident management principles—prioritizing business recovery and timely escalation—and presents practical methodologies such as restart, isolation, and downgrade, while detailing user impact handling, organizational roles, and post‑mortem best practices.
The article reveals that while DevOps has exploded with trends like Hybrid Deployments, DataOps, and GitOps, the overlooked but critical shift toward non‑invasive production debugging—providing code‑level observability without disrupting services—will become essential for modern DevOps teams.
This article outlines how to design, print, collect, and manage online service logs efficiently—covering log levels, key information, formatting, rolling, local vs. remote storage, real‑time collection, and tool selection—to turn logs into a valuable debugging and analytics asset.
This article provides a comprehensive overview of Redis monitoring metrics—including performance, memory, basic activity, persistence, and error indicators—along with recommended monitoring tools, configuration settings, and command-line examples for gathering and interpreting these metrics in production environments.
This article surveys common software release strategies—stop‑the‑world, canary, gray/rolling, blue‑green, A/B testing, and traffic‑isolation—detailing their advantages, disadvantages, and ideal scenarios, and then presents Alibaba’s practical best‑practice guide for planning, monitoring, and continuously delivering high‑quality releases.
Learn ten practical strategies—from safe change rollbacks and cautious destructive commands to robust backups, clear prompts, vigilant monitoring, and disciplined handovers—that help DBAs and operations engineers avoid costly system failures and maintain reliable production environments.
The article explains the concept of gray release, outlines a basic architecture with strategy configuration, execution, and service registry components, describes common traffic-splitting strategies, and details practical implementations using Nginx, gateway services, and complex scenarios involving data synchronization and message queues.
This article explains JD.com's order transfer process, inventory hierarchy, support relationships, order transfer and planning systems, fulfillment workflow, and risk control mechanisms, illustrating how millions of orders are allocated, scheduled, and executed across multiple warehouses and channels.
This article explains JD.com's end‑to‑end order fulfillment process, the concepts of 211/411 delivery promises, the mechanisms behind order splitting by warehouse, merchant and payment dimensions, and how monetary discounts are proportionally allocated across SKUs.
This article explains why RocketMQ was chosen, describes its large‑scale usage, details the design and implementation of a same‑city dual‑center architecture with near‑by production and consumption, outlines failover mechanisms, governance practices, lessons learned, and future plans for the messaging platform.
SCADA and DCS originated as separate control systems but have converged over time; SCADA focuses on distributed monitoring and data acquisition across wide geographic areas, while DCS emphasizes centralized control, and modern high‑bandwidth networks now allow them to operate together as a unified monitoring solution.
The article analyzes the current marginalization of IT departments in traditional enterprises due to limited value, hierarchical organization, and misaligned assessment, and proposes that digital transformation—redefining IT roles, aligning technology with business goals, and building a digital foundation—can turn IT into a profit‑center and strategic enabler.
Effective serverless governance requires comprehensive observability, traffic management, and service registration built on Kubernetes, using either a mesh sidecar with Istio or an embedded SDK, to simplify complex operational tasks such as discovery, fault tolerance, gray releases, and metric correlation for large‑scale function deployments.
This article examines real-world database deletion incidents, the associated legal consequences, and how DevOps culture and operational best‑practices can turn such mistakes into learning opportunities rather than career‑ending failures.
The article examines how ByteDance, Douyin, TikTok and other Chinese tech giants operate massive data centers with terabit‑level outbound bandwidth, millions of servers, and extensive CDN and load‑balancing architectures to support hundreds of millions of concurrent users.
This guide explains how Zabbix 4.4+ lets you use custom JavaScript in webhook media types to send alert notifications, details the built‑in Zabbix objects, shows configuration steps, data validation, logging rules, and provides a complete DingTalk webhook script with testing instructions.
This article analyzes the large‑scale architecture of WeChat Moments, detailing image and video traffic characteristics, hardware and software safeguards, disaster‑recovery mechanisms, capacity assessment, and a series of flexible strategies such as compression format changes, bitrate reduction, buffer pools, and timeline throttling to handle holiday spikes.
This article compares agent‑based and network‑data approaches to cloud‑native application performance monitoring, discussing their architectures, advantages, challenges, and how combining white‑box and black‑box techniques can improve fault detection, scalability, and operational efficiency in complex cloud environments.
The article outlines how digital‑champion enterprises achieve superior performance by integrating four core ecosystems—customer solutions, operations, technology, and talent—through strategic planning, partnership, and advanced technologies such as AI, big data, and industrial IoT, while highlighting maturity stages and practical implementation steps.
This article outlines the background, current challenges, and recent enhancements of CI/CD‑integrated business security compliance detection for mobile apps, including incremental source‑code scanning, call‑graph analysis, and performance gains, while also discussing future directions and benefits.
This tutorial provides detailed commands and configurations for installing a specific Docker version, setting up persistent MySQL containers, importing Apollo database scripts, and deploying Apollo Config, Admin, and Portal services using Docker on a CentOS host.
Facing surges during holidays and major shopping events, Dada’s DevOps team built a cloud‑native elastic scaling system that combines fine‑grained capacity management, multi‑cloud support, metric‑driven auto‑scaling, and extreme‑scale down strategies, delivering stable delivery performance while cutting costs.
This article presents Autohome's Cloud Platform (Home Cloud) technical debt governance framework, defining ideal technical states, outlining five systematic steps—from factor collection to project execution—and sharing practical outcomes that have enhanced the competitiveness of its applications and development teams.
The article provides a comprehensive overview of digital transformation, covering its definition, essential strategic questions, key drivers such as customer expectations, cloud and AI, priority areas in the value chain, practical frameworks, roadmap steps, expected benefits and common reasons for failure.
This article explores the fundamentals of IT monitoring, examines common challenges such as scalability, reliability, and alert fatigue, compares four implementation approaches—from open‑source to fully custom solutions—and presents practical techniques like alert convergence, suppression, and automation to build a robust, adaptable monitoring platform.
The article examines ByteDance's massive data‑center infrastructure, detailing server counts, multi‑terabit outbound bandwidth, dual‑link designs, CDN acceleration, and comparisons with other Chinese tech giants, illustrating how such scale enables seamless video streaming for hundreds of millions of daily users.
This article explains what disaster recovery is, distinguishes it from backup, outlines classification types, compares their core differences, and details four DR maturity levels with their advantages and drawbacks to help organizations build resilient data protection strategies.
Lin Ying, a senior test manager at Guoxin Securities, shares insights from his GOPS 2021 talk on the securities industry's digital transformation, current IT challenges, and a comprehensive red‑blue exercise strategy that combines full‑link load testing, automated workflows, and proactive monitoring to ensure system stability during market peaks.
This article compiles the 20 most common DevOps interview questions, providing detailed explanations of concepts such as the DevOps‑Agile distinction, core benefits, key tools, anti‑patterns, KPI metrics, automation advantages, containers, microservice frameworks, version control practices, Git revert techniques, post‑mortem meetings, asset vs configuration management, continuous testing elements, and essential development and infrastructure operations.
This article analyzes the stability challenges of a multi‑store chain’s product‑copy mechanism, outlines design goals for isolation and scalability, and presents short‑ and long‑term monitoring, flow‑control, and emergency‑response strategies to ensure reliable large‑scale operations.
This tutorial explains how to use Zabbix Agent 2 to monitor MongoDB databases and clusters, covering the required read‑only user setup, relevant Zabbix templates, key metrics such as jumbo chunks, connection pool stats, server status, collection and replSet information, and practical configuration examples.
Slack’s resilience engineering team outlines a structured chaos‑engineering workflow—identifying potential failures, ensuring fault tolerance, and deliberately injecting faults in development and production—to safely test system robustness, validate hypotheses, and continuously improve reliability through regular disaster‑theater exercises.
This article details how a major securities firm analyzed business stability, built a comprehensive stability engineering platform using chaos engineering, practiced extensive fault‑injection drills, and outlines future directions such as random‑scenario exercises, red‑blue battles, and AI‑driven risk detection.
At the 16th GOPS Global Operations Conference, Shen Hui of DingMao Technology explained how time‑series data analysis underpins AIOps, outlining its four‑step workflow, key challenges, and the company’s three‑pipeline solution that enables trend forecasting, fault prediction, and a robust AI‑driven operational platform.
