This article explains why operations teams must showcase their work to clients, offering practical ways to turn routine reports and meetings into compelling evidence of value, so that stability is recognized as a result of visible effort rather than taken for granted.
This article explains the hierarchical relationship between APM, distributed tracing, and observability, walks through a real Double‑11 e‑commerce incident, and demonstrates how a well‑designed observability stack can pinpoint the root cause, apply emergency fixes, and restore system performance within minutes.
This article walks through a real‑world case where HTTPS requests made with curl are reset on an Nginx server, detailing the step‑by‑step investigation, configuration tweaks—including client buffers and SSL session cache—and the final resolution that restores successful connections.
The article explains the dangers of using a single SSH key across all servers, introduces the blast‑radius concept, shows how to categorize and generate separate keys for production, staging, personal, and disposable use, and provides a practical SSH config workflow with advanced tips.
This article explains Nginx's core load‑balancing algorithms—Round Robin, Weighted Round Robin, IP‑Hash, and Least Connections—detailing their working principles, configuration examples, advantages, disadvantages, and ideal use‑cases for building reliable backend services.
The article explains how excessive inventory ties up cash flow, identifies root causes such as inflated safety stock, poor supplier analysis, and inadequate material classification, and offers a data‑driven, step‑by‑step framework—including classification, demand forecasting, supplier management, and EOQ—to achieve lean, precise purchasing.
This guide explains why parallel task handling matters for CI/CD efficiency, details the core 'concurrent' setting in GitLab Runner's config.toml, shows step‑by‑step configuration across platforms, and demonstrates how to combine it with the .gitlab-ci.yml 'parallel' keyword for fine‑grained job scheduling.
A leading financial platform suffered a six‑hour outage and $170 million loss when its Nacos service‑registry cluster entered a split‑brain state due to network partition, exposing flaws in AP‑mode deployment, monitoring gaps, and cascading failures that were later resolved through Raft migration, multi‑active architecture, and client‑side resilience.
This 2025 Linux security threat report breaks down the ten most critical risks—ranging from supply‑chain poisoning to AI‑driven APT attacks—offering real‑world case studies and actionable, step‑by‑step mitigation strategies for Linux operations teams.
This guide introduces the ELK stack fundamentals, explains Elasticsearch, Logstash, and Kibana roles, walks through environment preparation, installation, configuration, head plugin setup, shard and replica concepts, scaling recommendations, and provides scripts for monitoring cluster health, offering a comprehensive hands‑on reference for log analytics operations.
Choosing the right GitLab Runner executor—shell or Docker—determines how jobs interact with the host, affecting speed, isolation, security, and reproducibility, and this guide compares their core features, use cases, risks, deployment options, and best‑practice recommendations for robust CI/CD pipelines.
This article reveals the ten most frequent low‑level errors procurement professionals make during supplier negotiations—such as revealing budgets early, over‑promising volume, ignoring delivery terms, and neglecting data—while offering concrete, example‑driven tactics to avoid each pitfall and secure better price, lead‑time, and service outcomes.
This handbook provides Kubernetes operators with a comprehensive, step‑by‑step troubleshooting framework covering common Pod issues, Node problems, and cluster‑wide failures, offering practical commands, diagnostic tips, and explanations of error states to quickly identify and resolve stability challenges in K8s environments.
Despite the early grind of fixing computers and wiring networks, aspiring Linux operations engineers can follow a structured junior‑to‑senior learning roadmap—covering essential fundamentals, cloud computing skills, and advanced practices—to boost their value and advance their careers.
This article explains why errors surge under high workload, categorizes common mistake types, and presents the SAFE‑OPS six‑step framework—reducing load, adding redundancy, making processes explicit, and practical personal and team tactics—to keep work accurate and reliable.
This guide walks you through the common pain points of fragmented procurement processes and shows, step by step, how to design, implement, and roll out a low‑code order‑tracking system that provides transparent status, automatic exception alerts, inventory‑order synchronization, and real‑time dashboards for all stakeholders.
This guide introduces Checkmate, a modern open‑source monitoring platform, and walks you through its key features, Docker‑based installation, and step‑by‑step usage for website, server, Docker container, and hardware monitoring, plus theme customization.
This article provides a comprehensive guide to building enterprise‑grade, highly available Kafka clusters, covering architecture design, hardware planning, production‑level broker configurations, ISR management, monitoring, fault‑tolerance procedures, rolling upgrades, capacity planning, and automation scripts for seamless operations.
This article reveals why many businesses underestimate procurement expenses, breaks down the five hidden cost components, provides step‑by‑step formulas with real‑world examples, and offers practical strategies to optimize purchasing, logistics, loss control, capital use, and system automation for stable margins.
This article details Bilibili's evolving server fault management architecture, covering fault classification, the shortcomings of manual processes, and the design of an automated detection and repair system that combines in‑band and out‑of‑band data collection, rule‑based alerts, and end‑to‑end repair automation.
This article provides a comprehensive walkthrough of the ELK stack—Elasticsearch, Logstash, and Kibana—detailing its architecture, core concepts, and step-by-step deployment on a multi-node environment, including configuration, service setup, plugin installation, and troubleshooting tips for effective log analysis.
The article reveals that aggressive price cuts in procurement can damage supplier quality, delivery stability, and long‑term profitability, and argues that a balanced, data‑driven win‑win approach with proper cost analysis and system support yields more sustainable results.
This guide explains how Nginx functions as a load balancer and reverse proxy, covering its event‑driven architecture, worker processes, and core mechanisms, and details common balancing algorithms such as round‑robin, least connections, IP hash, weighted round‑robin and weighted least connections with full configuration examples and monitoring commands.
This guide explains why Grafana’s Time Series panel is essential for proactive monitoring, walks through browser selection, PromQL queries, panel options such as titles, tooltips, legends, axes, graph styles, and provides a ready‑to‑use JSON configuration to visualize trends and detect anomalies.
This guide walks through installing GitLab CE, configuring its URL and email settings, managing services, applying Chinese localization, creating projects via HTTP and SSH, adding remote repositories, and handling users and groups, providing complete hands‑on instructions for DevOps teams.
This guide explains what Grafana variables are, why they act like a dashboard control knob, and provides step‑by‑step instructions with screenshots and JSON examples for creating data‑source, business‑tag, and JSON‑file variables to build interactive monitoring dashboards.
This guide presents fifteen practical kubectl techniques—from resource abbreviations and context switching to advanced JSONPath queries and custom output formats—empowering operators to manage Kubernetes clusters more efficiently, troubleshoot issues faster, and automate routine tasks with confidence.
Through a series of dialogues with a Zen master, the article humorously explores the highest level of operations—automation that runs itself, balanced alerting, cloud migration, reliable backups, high‑availability, stability through chaos engineering, and the ultimate goal of making systems operate without human intervention.
This article provides a comprehensive guide to Redis Sentinel, covering its purpose, architecture, monitoring functions, discovery mechanisms, failover process, leader election, configuration options, and practical commands for achieving reliable high‑availability in Redis deployments.
This article walks through a real‑world 100% CPU incident on an e‑commerce platform, showing how to detect the problem within seconds, analyze Java threads, apply quick emergency fixes, implement permanent refactoring, and set up long‑term monitoring to prevent future outages.
This article explains how operations engineers can dramatically improve Linux network performance by understanding key metrics and applying practical tuning methods—such as adjusting TCP windows, enabling TCP Fast Open, switching to BBR, optimizing kernel parameters, using high‑performance NICs, zero‑copy transfers, load balancing, and monitoring tools—to increase bandwidth and reduce latency for high‑concurrency and real‑time applications.
This article outlines how proactive monitoring, automation, disciplined processes, robust architecture, and chaos engineering empower operations engineers to prevent failures, manage changes, ensure reliable backups, and build self‑healing systems that balance stability, innovation, cost, and human decision‑making.
Alibaba Cloud’s Serverless Elasticsearch service, combined with the SREWorks data‑driven operations platform, offers a cloud‑native, real‑time search and analytics engine that integrates metric and log collection, cost management, and health monitoring to enhance scalability, performance, and operational efficiency for enterprise applications.
The article details how Alibaba’s Tesla SRE platform supports the massive offline and real‑time big‑data ecosystems through a layered, data‑driven operations framework—DataOps—integrating unified portals, configuration, job, workflow, and analytics platforms, enabling automated monitoring, intelligent decision‑making, and self‑healing capabilities across 100,000+ nodes.
Alibaba's SREWorks platform, now open‑source, combines cloud‑native architecture, DataOps and AIOps to address the growing complexity of big‑data and AI operations, offering a layered SaaS/PaaS/IaaS solution that streamlines delivery, monitoring, management, control, operation, and service for modern enterprises.
This article explains how to transform traditional SRE troubleshooting into a data‑driven process by pre‑collecting operational metrics into a data warehouse, using ETL to create layered data models (ODS, DIM, DWD, DWS) that enable efficient, repeatable analysis while balancing data freshness and storage costs.
Tracing Alibaba’s journey from manual, script‑based operations through tool‑centric and platform‑driven DevOps to the data‑focused DataOps era and emerging AIOps, the article outlines the shifting responsibilities, architectural challenges, and the multidisciplinary skill set required for modern operations engineers.
The article explains how DataOps and SRE practices enable large‑scale, data‑driven operations in big‑data environments, aiming for fully automated, intelligent, and ultimately unmanned management of complex systems.
This article walks senior operations engineers through ten authentic production‑level TCPDump case studies, teaching core command options, packet‑analysis heuristics, and a systematic four‑step troubleshooting framework that turns network mysteries into clear, actionable solutions.
This article examines the newly released 2025 Internet Company Work‑Hour Rankings, explains how weekly work hours are calculated, and highlights DJI’s recent "no overtime" initiative, offering a data‑driven perspective on employee time management across Chinese tech firms.
This article explains why cross‑system data inconsistencies occur, defines key reconciliation metrics—completeness, timeliness, and automatic repair—and provides step‑by‑step designs for both real‑time (seconds‑to‑minutes) and offline (hour‑to‑day) reconciliation, including message‑driven triggers, batch processing, and SQL examples for detecting and fixing mismatches.
This article introduces five popular open‑source projects—QingLong, Mermaid, posting, Postiz, and Nping—detailing their key features, cross‑platform capabilities, language support, API integrations, AI assistance, and providing direct GitHub repository links for each tool.
This guide reviews eight network packet‑capture utilities—from lightweight command‑line tools like Tcpdump and Tshark to visual HTTP debuggers such as Charles, mitmproxy, and Fiddler—detailing their core strengths, typical use cases, command examples, and how to choose the right tool for operations or security scenarios.
Network latency spikes often leave developers guessing whether the culprit lies in user‑space, the kernel stack, or the physical link; this article introduces TencentOS’s NBS (Net Blackboard System), a low‑overhead, zero‑disruption solution that pinpoints delay sources, supports continuous deployment, and outperforms traditional tools like tcpdump and bpftrace.
Effective technical optimization requires moving from isolated, point‑style ideas to a comprehensive, measurable framework that quantifies goals, assesses gaps, designs capacity, monitors key services and links, and establishes clear compensation and incident‑handling procedures, ensuring a complete, closed‑loop solution.
This article shares five battle‑tested one‑line Shell commands that instantly diagnose server health, analyze logs, rank process resources, troubleshoot network connections, and clean disk space, plus practical tips and mindset advice to help operations engineers solve critical incidents faster and more reliably.
This article compiles 174 crucial interview questions for operations engineers, covering topics such as server management, networking, Linux commands, load balancing, storage RAID configurations, monitoring tools, security practices, and troubleshooting techniques to help candidates prepare comprehensively.
This guide provides a comprehensive overview of common Linux commands for directory navigation, file manipulation, permission management, searching, compression, and system shutdown, complete with usage syntax, options, and practical examples to help users efficiently manage their Unix-like environments.
This article details a small‑to‑mid‑size e‑commerce platform’s journey from a few thousand daily page views to ten million, covering business challenges, three architecture evolution stages, key technical solutions, performance optimizations, cost‑control strategies, and practical automation tips.
This article explains why supplier tiering is essential, outlines three common classification models, describes a DMAIC‑based six‑stage supplier lifecycle, and shows how a digital procurement system can automate information management, quoting, execution, and settlement to improve operational efficiency.
This guide explains how to install and use the kubectl tail plugin—a krew‑based tool that streams logs from multiple Kubernetes Pods and containers in real time, covering prerequisites, offline manifest download, installation steps, and practical command examples for various selectors.
This article details a P0 production incident where a Kubernetes cluster became completely unresponsive due to 100% etcd database fragmentation, describing the step‑by‑step diagnosis, emergency recovery actions, root‑cause analysis, and long‑term preventive measures for reliable cluster operation.
This comprehensive guide explains what a settlement system is, outlines ten critical design steps—from data source identification to bill provision—and illustrates their application across diverse scenarios such as corporate welfare platforms, government services, promotion platforms, bank acquiring, points e‑commerce, ETC, and consumer finance, while highlighting key rules, workflows, and interface considerations.
This guide explains the common pain points of manual procurement inquiries and quotations, then walks through a five‑step approach to create an online, automated system that streamlines demand collection, supplier notification, price entry, real‑time comparison, and final price confirmation, improving accuracy and efficiency for both buyers and suppliers.
This article explains the challenges of managing rapidly growing server fleets, outlines a systematic classification of hardware and software faults, and details an end‑to‑end automated solution that combines in‑band and out‑of‑band data collection, rule‑based detection, and fully automated repair workflows to improve fault coverage, accuracy, and recovery speed.
This article explains how dynamic, data‑driven shelving strategies in a Warehouse Management System can dramatically improve space utilization, reduce picker travel, and streamline inventory handling by outlining key objectives, common tactics, detailed workflow steps, constraint checks, exception handling, and result processing.
This comprehensive guide walks operations engineers through essential Kubernetes commands, covering cluster inspection, pod lifecycle, service and network handling, storage configuration, troubleshooting, performance monitoring, scaling, security, and automation, enabling efficient and expert management of containerized clusters.
Discover the ten most widely used operations engineering tools—including Shell scripts, Git, Ansible, Prometheus, Grafana, Docker, Kubernetes, Nginx, ELK Stack, and Zabbix—detailing each tool's functions, ideal scenarios, advantages, and real‑world examples, plus sample code and configuration snippets.
This article explores the four‑layer load‑balancing architecture, five common algorithms (including Round Robin, Weighted RR, Least Connections, Consistent Hashing, and AI‑driven adaptive load), high‑availability design, deep pitfalls, and a self‑built load balancer implementation, providing practical code examples and best‑practice guidelines.
Modern software operations have shifted from a post‑launch checklist to an ongoing, automated discipline, and this article outlines the six core phases—requirement planning, CI/CD automation, comprehensive monitoring, incident response, performance tuning, and security compliance—providing concrete examples and practical advice for building a resilient DevOps culture.
This article presents a comprehensive list of 22 key performance indicators across planning, procurement, inventory, logistics, customer service, and overall operational efficiency, explaining how each metric can be measured, analyzed, and used to improve a company's supply chain performance.
This guide walks you through installing and configuring Nginx on CentOS, Docker, and macOS, explains core concepts like event‑driven architecture, compares Nginx with Tomcat, and clarifies the roles of traffic gateways, API gateways, and service registries, providing practical commands and Q&A for developers.
This guide reviews a comprehensive set of operations tools—including LDAP, JumpServer, Fabric, Ansible, dnsmasq, pdnsd, ApacheBench, TCPcopy, PortSentry, fail2ban, knockd, Vagrant, Docker, ELK, and Smokeping—detailing their features, advantages, and typical use cases for modern infrastructure management.
This guide explains how the Linux locate and find commands work, covering their performance characteristics, key features, common options, search criteria, combining conditions, actions, and how to use xargs for parameter passing, helping users choose the right tool for efficient file searching.
This guide shows how to create Bash scripts that mark an Nginx upstream server as down or up by editing the upstream configuration via SSH and then hot‑reload Nginx, providing a repeatable automation workflow for service deployment and rollback.
This article examines the four Linux Virtual Server (LVS) clustering modes—NAT, Direct Routing, Tunneling, and FULLNAT—detailing their architectures, data flows, configuration steps, advantages, disadvantages, and ideal use cases, helping operations engineers select the most suitable load‑balancing solution for high‑performance, scalable web services.
This guide explains why procurement price analysis goes beyond picking the lowest quote, outlines the components of a price, identifies six key influencing factors, and provides a five‑step process using a procurement system to record, compare, attribute, track trends, and act on price data.
This article recounts a disastrous production server data loss caused by an accidental rm -rf command, details the step‑by‑step recovery using ext3grep, extundelete and MySQL binlog, and shares hard‑earned lessons to prevent similar incidents.
After eight years of ops experience, this article shares three open‑source tools—SSL certificate management, SMS verification, and website monitoring—that automate routine tasks, cut costs, and prevent midnight outages, offering practical solutions for individual developers, small teams, and SMEs.
This article explains why suppliers often seem uncooperative, identifies the three core concerns that drive their behavior, and outlines five practical SRM system features—real‑time reconciliation, payment visibility, production planning, inventory alerts, and transparent performance—that transform supplier relationships into mutually beneficial collaborations.
This guide shows how to create two Python scripts that use the Eureka REST API to set a service instance's status to OUT_OF_SERVICE for taking it offline and to UP for bringing it back online, handling command‑line arguments, constructing URLs, sending PUT requests, and checking responses.
This guide introduces four essential Linux commands—lsmod, lsof, lspci, and lsscsi—detailing their purpose, syntax, useful options, and practical output examples, helping system administrators quickly diagnose kernel modules, open files, PCI devices, and SCSI devices.
Learn two practical Nginx configurations to prevent browsers from caching HTML files by setting appropriate Cache-Control, Pragma, and Expires headers, with examples for both standard location blocks and conditional directives, ensuring fresh content delivery for your web applications.
This article details China International Aviation's successful DevOps assessment—earning a Level‑2 Continuous Delivery rating—by aligning its refund system with both ITU international standards and domestic Chinese standards, and includes an in‑depth interview on implementation, benefits, challenges, and future plans.
This article presents a complete collection of shell scripts for initializing a wide range of Linux distributions—including Rocky, AlmaLinux, CentOS, Ubuntu, Debian, openEuler, AnolisOS, OpenCloudOS, openSUSE, Kylin Server, and Uos Server—detailing supported features, version‑specific updates, and step‑by‑step usage instructions.
This guide walks through installing Supervisor on Linux, explains its role as a Python‑based process manager, shows how to create a Webman daemon using 1Panel, and provides detailed configuration and management steps for supervising the daemon.
This article provides a complete Filebeat configuration example, covering input settings for log files, field definitions, multiline handling, module loading, Elasticsearch output parameters, index naming, authentication, and processors for field cleanup, enabling efficient log collection and indexing in Elastic Stack environments.
This article introduces Dish, a Go‑based command‑line utility for real‑time socket connection monitoring, explains its core features, technical principles, installation and usage examples, compares it with tools like netcat, nmap and telnet, and discusses its advantages and limitations for operations teams.
Infrastructure architecture, the often‑overlooked foundation of IT, defines how compute, storage, networking, and security are designed, integrated, and automated—linking software, ops, and cloud strategies—through processes like requirement analysis, technology selection, IaC implementation, and continuous optimization for reliability, performance, cost, and operational excellence.
From manual server provisioning nightmares to automated, version‑controlled infrastructure, this article explains what IaC is, why it matters, and how to adopt it using Terraform and Ansible, offering practical steps, best‑practice tips, and real‑world benefits for operations teams.
This article explains how to achieve high availability in internet systems by designing redundant components and automatic failover mechanisms across layers such as load balancers, reverse proxies, microservices, middleware, databases, and messaging, illustrating concepts with diagrams of architectures, clustering, leader election, and practical tools like keepalived, Zookeeper, Redis Sentinel, and Kafka.
This curated collection gathers the most valuable fault‑testing, Byteman, Chrome Extension, and frontend development articles from 2024‑2025, providing concise titles, direct links, and publication dates to help engineers quickly locate essential technical knowledge.
This article explains how Nginx rate limiting works, why it’s essential for protecting servers from overload and attacks, and details the token bucket algorithm with a step‑by‑step workflow and a practical configuration example.
Facing certificate expiration in isolated, regulated Kubernetes clusters? This guide explains the hidden risks, outlines a four‑step offline rescue toolkit, details automated rotation with Cert‑Manager and Vault, and provides compliance audit and disaster‑recovery strategies, illustrated with real‑world banking case studies.
The article explains how Event‑Driven Architecture (EDA) transforms traditional request‑response systems into decoupled, asynchronous pipelines that boost system resilience, scalability, observability, and agility, and it demonstrates a practical AWS EventBridge image‑processing workflow.
This article outlines the evolution of DevOps standards, organization‑level capability building, AI‑enabled R&D and operations, and the foundational AI‑driven assurance framework, highlighting recent assessments, standards, and industry adoption across finance, telecom, manufacturing, and other sectors.
This guide introduces Grafana, outlines its multi‑source monitoring features, and provides step‑by‑step installation instructions for Linux using systemd and for Docker Compose, including required commands, configuration files, and how to create and save a basic dashboard.
This article breaks down the cloud‑native concept for operations teams, explaining its meaning, the three core pillars—containerization, microservices, and container orchestration—and how adopting them can accelerate delivery, improve resilience, cut costs, and free engineers from repetitive manual tasks.
In modern cloud‑native environments, Prometheus Alertmanager offers powerful grouping, inhibition, and silencing features that reduce alert noise, help pinpoint root causes, and provide scheduled quiet periods, enabling teams to transform chaotic alert storms into manageable, actionable notifications.
This guide walks you through downloading and installing Nginx on CentOS, locating its directories, checking service status, viewing version, managing processes, testing configuration syntax, and restarting the server, all with clear commands and illustrative screenshots.
Inventory turnover rate, not delivery time or fulfillment rate, is the key metric for evaluating supply chain efficiency; this article explains its definitions, business-specific calculations, common pitfalls, data requirements, and practical steps to set, monitor, and leverage the metric for better operational performance.
This article provides a comprehensive comparison of popular log management solutions—including Filebeat, Graylog, the Elastic (ELK) stack, Grafana Loki, LogDNA, Datadog, Logstash, Fluentd, and Splunk—detailing their main features, pricing models, advantages, and drawbacks to help you choose the right tool for your needs.
This article dissects the core principles and architectural patterns behind Chinese super‑payment platforms' settlement systems, covering transaction‑clear‑settlement flow, settlement modes, account models, system components, processing steps, and key performance indicators for handling trillions of yuan each day.
This comprehensive guide lists 100 practical Windows command‑line utilities, organized into categories such as system management, network diagnostics, file handling, process control, and advanced operational tasks, while highlighting high‑risk commands and best‑practice rules for safe administration.
This guide reveals how companies can dramatically cut procurement expenses by first mapping their spending flow, then tightening demand control, approval boundaries, pricing comparisons, payment accuracy, and leveraging a digital system to create a closed‑loop, data‑driven purchasing process.
This guide explains why long‑lived IAM user keys are risky, introduces IAM roles and temporary security credentials, details trust and permissions policies, and provides step‑by‑step commands and profile configurations for safely using AWS STS assume‑role in production environments.
This guide walks through configuring rsync and inotify on multiple Linux hosts to achieve real‑time backup of NFS static resources, covering host preparation, rsync daemon setup, password handling, daemon activation, inotify‑driven monitoring scripts, and verification of successful synchronization.
This article explains the concept, architecture, core modules, decision process, and practical strategies of intelligent order routing in e‑commerce, showing how real‑time data and rule‑based optimization can reduce costs, shorten delivery times, balance inventory, and enhance customer experience.
A missed renewal of a TLS certificate for the domain https://support.content.office.net caused widespread certificate‑expired warnings for Office users on June 24, 2024, affecting all services that rely on several related domains and will likely be resolved once Microsoft updates the certificate during regular working hours.
Facing petabyte‑scale log traffic, the Qunar team identified low compression rates in their Kafka‑Filebeat pipeline as the main bottleneck and, through systematic tuning of batch size, memory queues, and round‑robin settings, achieved a 35% reduction in traffic and a 30‑42% drop in request volume while raising per‑minute throughput by 35%.
