This article provides practical guidelines for writing Dockerfile instructions—including RUN, CMD, ENTRYPOINT, ADD, COPY, and WORKDIR—offering syntax recommendations, best‑practice examples, and advice on when to use each command to create efficient, maintainable container images.
This article outlines a comprehensive release workflow that integrates Jira, GitLab, and Jenkins using webhooks, detailing manual and automated publishing methods, configuration steps for each tool, pipeline design, and code examples to achieve a closed‑loop deployment process.
This guide explains Nginx's core concepts, installation on Linux, common commands, configuration structure, reverse‑proxy and load‑balancing implementations, static‑dynamic separation, and high‑availability setup with keepalived, providing step‑by‑step examples and practical code snippets.
This article details 58 Group's comprehensive evaluation of DorisDB, TiFlash, and ClickHouse for large‑scale analytical workloads, covering functional and performance benchmarks, real‑world use cases such as security analysis and DBA operations, data ingestion methods, cluster architecture, automation practices, and lessons learned.
The article outlines ten frequent DevOps pitfalls—from out‑of‑order delivery and role misunderstandings to neglecting security and team fatigue—and provides practical guidance on planning, automation, quality, and cultural practices to achieve successful continuous delivery.
Gaode’s new serverless/FaaS platform, built on Alibaba Cloud Function Compute with custom C++, Go, and Node.js runtimes, now processes over 100 000 QPS, enabling a unified client‑cloud codebase, rapid feature iteration, automatic scaling and cost savings, while supporting extensive monitoring, Dapr integration, and future edge‑computing enhancements.
This article provides a detailed, step‑by‑step guide to Linux's built‑in performance monitoring utilities—top, free and vmstat—covering their purpose, essential options, output interpretation, interactive shortcuts, and practical examples for effective system administration.
Learn how to set up basic Nginx load balancing with a minimal nginx.conf, create multiple Node.js services, and explore common strategies like round-robin, weighted round-robin, and IP hash, complete with code examples and testing results to ensure even request distribution.
This article outlines the challenges of operating petabyte‑scale big‑data clusters and presents a comprehensive monitoring framework—including basic and upgraded monitoring layers, metric collection, alerting pipelines, and strategies for alarm convergence and grading—to ensure reliable, proactive SRE operations.
A sysadmin narrates how he monitors four Redis nodes, detects master failure with PING, promotes a slave using SLAVEOF, reconfigures the remaining replicas, and ultimately automates the entire process with a custom Sentinel program and a multi‑node Sentinel cluster for high availability.
This article explains the DevOps lifecycle—covering planning, coding, building, testing, releasing, deploying, operating, monitoring, and CI/CD—and lists popular tools for each stage to help teams achieve continuous delivery and efficient collaboration.
The article explains service governance and SRE practices, detailing goals, components, overload handling, capacity planning, and strategies to maintain continuous 24‑hour service reliability while reducing manual toil.
This tutorial walks you through Python list syntax, common operations such as adding, modifying, searching, deleting, sorting, and nesting, complete with code examples and output screenshots, helping beginners and intermediate programmers deepen their understanding of list handling.
This guide explains how to design and practice a structured incident‑response process—defining problems, applying quick‑recovery steps, analyzing root causes, standardizing solutions, and assigning critical roles—to dramatically reduce production outage duration.
Microservice architectures must handle inevitable network, hardware, and application errors by employing fault‑tolerant patterns such as graceful degradation, change management, health checks, fail‑over caches, retry logic, rate limiting, circuit breakers, and testing strategies to maintain service reliability and user experience.
This article provides a comprehensive guide for startups on choosing and assembling a backend technology stack, covering language choices, core components such as project management, DNS, load balancing, CDN, RPC frameworks, service discovery, databases, NoSQL, messaging, logging, monitoring, configuration, deployment, and operational best‑practice recommendations.
This guide outlines a structured approach to incident response, detailing problem definition, temporary fixes, root‑cause analysis, solution design, implementation, and standardization, while highlighting four critical roles—commander, communicator, rapid‑recovery lead, and diagnosis lead—to ensure swift, coordinated recovery of production services.
This guide explains why monitoring is essential throughout a product lifecycle, outlines monitoring modes and methods, compares health checks, logs, tracing and metric solutions, and provides a detailed Prometheus‑based monitoring architecture with concrete metric definitions, alerting rules, and incident‑response procedures.
This article explores how to accurately measure QPS in Java performance‑testing scripts by using JsonPath and regular‑expression validation, analyzes error margins under different thread and iteration configurations, and demonstrates that exception handling has minimal impact on overall throughput.
This article describes how a Chinese securities firm applied big‑data‑driven clustering and Bayesian methods to automate root‑cause analysis of trading‑system anomalies, detailing the challenges, algorithmic designs, practical implementations, and evaluation results that demonstrate significant reductions in false alarms and faster recovery.
JD.com’s AIDCTwins platform leverages low‑code modeling, IoT sensing and cross‑platform 3D visualization to create a digital twin of its massive data‑center infrastructure, dramatically cutting labor costs, enabling real‑time updates, and boosting intelligent, green operation across thousands of servers and racks.
This article explains the fundamental differences between traditional and cloud‑native monitoring systems, outlines the challenges each faces, and details JD.com's evolution from physical servers to JDOS 2.0, describing its modular architecture, deployment model, and ongoing optimization efforts.
This guide explains why a Jenkins agent fails to start with the error "provided port: 8182 is not reachable" and provides step‑by‑step troubleshooting methods such as network testing, Docker port mapping verification, and ensuring proper communication between the agent and master nodes.
The article explains how JD’s retail user growth team built a data‑driven, AI‑powered “machine” that automates user insight, operation planning, conflict resolution, external touchpoint, and real‑time strategy engines to achieve precise, large‑scale user acquisition and retention.
The article explains that DevOps should be viewed as an interdisciplinary interface rather than a specific job title, contrasts it with traditional roles like software developer or system administrator, and illustrates the concept with a Java‑style code example, while also including a brief promotional note about a DevOps training course.
This article explains how ByteDance's private cloud platform TCE leverages Kubernetes deployments, oversubscription, elastic scaling, and mixed online‑offline resource sharing to dramatically improve cluster resource utilization while maintaining service stability during traffic peaks and valleys.
This article explains Docker and Kubernetes logging challenges, compares logging drivers, introduces S6‑based container logging, and presents a node‑level log‑agent architecture using Filebeat, Logrotate, Kafka, and Elasticsearch to achieve reliable, auto‑rotating log collection in production environments.
This article explores Nginx's origins, why it outperformed Apache, its core features such as event‑driven architecture and modularity, explains forward and reverse proxy concepts, and details the load‑balancing algorithms Nginx supports, providing practical insights for backend engineers.
This article introduces Meituan's elastic scaling platform, detailing its evolution from version 1.0 to 2.0, the technical and operational challenges faced, the strategies adopted for promotion and resource management, and several real‑world business scenarios where elastic scaling reduces cost and improves reliability.
The article explains why large internet firms adopt cross‑region multi‑active architectures for high availability, compares cold backup, hot standby, same‑city active‑active, and cross‑region active‑active solutions, discusses their trade‑offs, and presents practical design patterns and questions for implementing such systems.
This article outlines essential Kubernetes best‑practice guidelines for production environments, covering health probes, resource allocation, RBAC, cluster configuration, networking policies, monitoring, logging, stateless design, autoscaling, runtime security, and strategies for zero‑downtime and failure recovery.
This article explains the concept, features, and practical usage of flame graphs—including how to generate them from Java thread dumps with Perl scripts—to help developers visualize call‑stack frequencies and quickly identify performance bottlenecks in backend services.
This article explains why well‑structured error logs are essential for troubleshooting, analyzes common sources of errors, and provides concrete guidelines and code examples to make logs complete, specific, and actionable for developers and operations teams.
This article presents a comprehensive, automated solution for API robustness testing that extracts baseline cases, generates exhaustive parameter‑level test data, executes them at scale, and analyzes results to identify abnormal responses without manual effort, thereby improving testing efficiency and software quality.
This article explains common Kubernetes component and node failures, introduces the Node Problem Detector (NPD) for monitoring and reporting issues, and provides step‑by‑step deployment, configuration, and remediation procedures to keep clusters reliable.
This article presents Baidu's end‑to‑end intelligent delivery system for its massive information‑flow recommendation platform, detailing challenges in continuous integration, testing, deployment, and operations, and describing the architectural, algorithmic, and process innovations that enable high‑speed, low‑cost, and largely unmanned releases.
This article details Dada Group’s implementation of an intelligent elastic scaling architecture that automatically adjusts capacity during peak promotions and low‑traffic periods, improving delivery reliability, reducing costs, and supporting multi‑cloud and multi‑runtime environments through sophisticated monitoring and auto‑scaler mechanisms.
This article explains the concept of gray (canary) release, outlines a basic architecture with essential components, describes common gray release strategies such as header, cookie, and parameter based routing, and provides practical guidance for implementing gray releases using Nginx, gateway services, and handling complex scenarios like multi‑service and database migrations.
This article presents Meituan's elastic scaling platform, detailing its evolution from Hulk 1.0 to Hulk 2.0, the technical and operational challenges faced, the solutions implemented for resource management and multi‑tenant scaling, and real‑world business scenarios such as holiday, peak‑hour, and emergency capacity provisioning.
This article explains the meaning of Nginx upstream directives max_fails and fail_timeout, demonstrates their behavior with a PHP‑FPM test setup, and clarifies common misconceptions and best‑practice settings for reliable load balancing.
This article introduces Prometheus as an open‑source monitoring system and time‑series database, explains its core components such as Server, Exporter, PushGateway and Service Discovery, and provides step‑by‑step Docker deployment instructions together with Grafana integration for visualizing metrics.
This guide outlines critical precautions and best‑practice tips for executing risky Linux commands—such as rm, chmod, cat, dd, tar, and MySQL—by verifying environments, backing up data, using safe aliases, and avoiding common pitfalls that can cause catastrophic data loss.
The article shares eight authentic production incident cases—from frequent JVM Full GC and memory leaks to cache avalanches, DNS hijacking, and database deadlocks—detailing their root causes, diagnostic steps, code snippets, and practical remediation strategies for engineers facing similar challenges.
This article introduces four widely used Linux monitoring utilities—iotop, htop, IPTraf, and Monit—explaining their core features and how they help quickly diagnose system performance and network issues for effective operations management.
This article explains the fundamentals of CI/CD within DevOps, compares leading CI/CD tools, outlines a four‑stage implementation process, and details the numerous benefits such as faster delivery, higher quality, improved productivity, and reduced costs.
The article uses the OVH data‑center fire as a stark reminder that startups must design robust data disaster‑recovery strategies, explaining why backups, off‑site storage, and proper architectural planning are essential to prevent catastrophic data loss and potential business collapse.
The article analyzes the instability of a company's Kubernetes clusters, identifies root causes such as unstable release processes, lack of monitoring, logging, and documentation, and proposes comprehensive solutions including a Kubernetes‑centric CI/CD pipeline, federated Prometheus monitoring, Elasticsearch logging, centralized documentation, and integrated traffic management with Kong and Istio.
The article provides a comprehensive overview of Site Reliability Engineering (SRE), explaining its origins, definition by Google, required skill sets, typical responsibilities, tools used, and how the role has evolved within DevOps and modern cloud‑native environments.
Learn step-by-step how to create a custom Zabbix Agent2 plugin in Go that retrieves HTTPS certificate expiration dates, compile and install the plugin, configure Zabbix, and set up monitoring items and alerts to proactively avoid service disruptions caused by expired certificates.
This article examines Yanxuan's inventory management challenges and presents a layered design—warehouse, physical, and sales layers—combined with a flexible lock‑stock pool to support multi‑channel, multi‑warehouse operations while addressing promotional and special‑use inventory requirements.
This guide walks you through essential Huawei switch commands, covering user and view modes, VLAN creation, port link types, batch operations, initial login procedures, service activation, link aggregation, DHCP setup, and flow‑control configuration, all illustrated with step‑by‑step screenshots.
Learn how to monitor Linux server performance using essential tools—top, vmstat, pidstat, iostat, netstat, sar, and tcpdump—understanding CPU, memory, disk I/O, and network metrics, interpreting their outputs, and applying insights to diagnose and troubleshoot system issues effectively.
This article outlines Zhuanzhuan's systematic approach to collecting, classifying, and resolving online user issues through weekly QA‑led meetings, detailed problem categorization, and targeted solutions, ultimately improving product design, reducing repetitive work, and enhancing overall operational efficiency.
Datadog, a cloud‑native monitoring platform, has surged from a modest startup to a $30‑billion market cap by expanding its product suite, leveraging strong probe technology, and capitalizing on the booming cloud‑monitoring market, with financials and customer retention indicating robust growth prospects.
A production RocketMQ cluster suffered a 10‑minute message‑send timeout after a broker’s memory failure caused a server reboot, and the post analyzes the routing registration, name‑server removal logic, client‑side timeout handling, root cause of name‑server “dead‑lock”, and proposes deployment and code‑level fixes to prevent recurrence.
The article details how 58.com’s annual Spring recruitment campaign was strategically designed with a two‑phase timeline, unified interaction framework, and immersive storytelling to drive new user acquisition, sustained activation, and significant traffic growth during the post‑holiday hiring surge.
This article explores practical ways to improve operational efficiency by examining process optimization, tool adoption, quality considerations, and engineering practices, highlighting real-world examples like OA, CICD, Spring Cloud, Java, and Kubernetes while emphasizing shared value and cultural factors.
This article details Baidu's Feed recommendation system architecture, explaining how a combination of dynamic retry scheduling, real‑time stop‑loss mechanisms, multi‑recall frameworks, ranking layer fallbacks, and IDC‑level multi‑master designs collectively ensure five‑nine availability across billions of daily requests.
Amid microservice and distributed architectures, this article explains how to design a comprehensive log analysis system—covering collection, storage, consumption, key data points, collection methods, and practical use cases like automated test generation, issue localization, and real‑time exception monitoring—to ensure system stability.
The article examines how the rapid adoption of cloud computing, DevOps, AIOps, and FinOps is reshaping the role of IT operations, highlighting new trends, evolving work boundaries, and the essential characteristics of a modern, automated, secure, and cost‑optimized operations system.
The article outlines six key DevSecOps best practices—including establishing a security model, enforcing governance policies, automating security tasks, training developers, applying network segmentation, and limiting administrative privileges—to help organizations overcome staffing and collaboration challenges while maintaining consistent security throughout the development and operations lifecycle.
This article introduces OCTO 2.0, Meituan’s next‑generation distributed service‑governance platform, detailing its overall architecture, mesh‑related features such as traffic hijacking, service subscription, lossless hot‑restart, data‑plane operations, and future cloud‑native evolution plans.
This comprehensive guide explains MongoDB cluster components, common use cases, monitoring commands, basic operational tasks, data migration procedures, troubleshooting of production issues, and optimization recommendations to achieve high performance and scalability.
This article provides an in‑depth overview of monitoring, covering its purpose, key objectives, practical methods, core processes, a detailed comparison of popular monitoring tools such as Zabbix and Prometheus, and best‑practice recommendations for building scalable, reliable, and intelligent monitoring platforms.
This article explains the Linux uptime command, describing its purpose, basic syntax, available options, common usage examples, and deeper concepts such as system load average, CPU core considerations, and how to retrieve related information from /proc files.
This guide offers a practical overview of essential Linux networking tools—including netstat, ss, sar, iftop, and tcpdump—explaining how to monitor connections, analyze traffic, capture packets, and tune kernel parameters to handle massive connection loads efficiently.
When disk usage reported by df doesn't match du and inodes are not full, the discrepancy often stems from files that were deleted while still held open by running processes, and this guide explains how to identify those processes and safely free the space.
This guide walks you through essential Linux automation techniques—including boot‑time service startup with chkconfig and rc.d, one‑off scheduling using at, and recurring jobs with crontab and shell scripts—so you can manage web servers efficiently without manual intervention.
This article outlines Youku's end‑to‑end service‑side quality assurance framework, detailing the factors that affect quality across the development lifecycle, the automated testing practices integrated into the release pipeline, the platform capabilities built for data collection and replay, and the metrics used to measure improvements in reliability and development efficiency.
This article presents a Bash script that uses a case statement to define functions for starting, stopping, reloading, and checking the status of Nginx, explaining each command and providing the full script for practical service management.
The article explains how transformational leadership—characterized by vision, inspirational communication, intellectual stimulation, supportive behavior, and individualized recognition—drives high‑performing DevOps teams, linking leadership traits to software delivery outcomes and offering practical guidance for managers to foster a strong engineering culture.
This article explains how Facebook’s Twine system orchestrates containers across millions of servers, detailing its architecture, support for stateful services, cross‑data‑center control, elastic capacity handling, and the lessons learned from eight years of large‑scale operations.
This comprehensive guide explains the purpose, models, and methods of monitoring across the entire software lifecycle, compares health checks, logging, tracing, and metric collection, and details practical implementations using tools like ELK, SkyWalking, and Prometheus for cloud‑native operations.
In a keynote at MWC 2021 Shanghai, Huawei’s Dr. Che Haiping explained how the Autonomous Networks initiative, likened to Industry 4.0, is reshaping telecom production, enabling flexible, intent‑driven services and accelerating digital transformation across the sector.
This article explains the concept of resource packages, compares several implementation approaches, and shows how they allow a single configuration to instantly update static web assets for diverse and time‑sensitive front‑end scenarios without requiring a new release.
This article analyzes the rapid growth of O2O home‑delivery, examines the challenges of delivery fulfillment, compares third‑party and self‑built rider models, and presents hybrid, batch‑ordering, and AI‑driven optimization strategies to reduce costs and boost efficiency.
An Operations Workbench built on a micro‑frontend architecture unifies fragmented e‑commerce tools into standardized Process Units and SOPs, boosting operational efficiency, reducing technical duplication, and providing data‑driven, consistent experiences for thousands of operators across hundreds of business scenarios.
This article examines the design of the "Spring Heat Value Competition" activity for a local live‑dating platform, detailing how game‑like mechanics, emotional curves, and visual styling were used to strengthen host‑user relationships, increase user participation, and drive a 116% rise in gift revenue.
This article presents a comprehensive guide to Redis monitoring and alerting, covering metric classification, threshold settings, client traffic collection, host resource usage, instance health checks, cluster failover diagnostics, and detailed explanations of Redis INFO sections with practical code examples.
This article walks through the design, scenario planning, and Java implementation of a fixed‑thread load test that simulates teacher login, knowledge‑point queries, course recommendations, and collect/uncollect actions, then presents the resulting performance metrics.
This article introduces the fundamentals of full‑chain load testing, explains why it is essential for large‑scale distributed systems, outlines the DESP model with its four simulation dimensions, and presents a detailed case study of New Oriental's continuation‑class platform including architecture, data preparation, load design, automation and recruitment information.
This article explains why Tomcat log files inherit restrictive permissions after deployment, describes Linux UMASK behavior, and provides step‑by‑step instructions to modify the catalina.sh script so that log files use the system's default 644/640 permissions.
This article defines bug tracking, outlines essential workflow steps and report contents, and evaluates a range of bug tracking tools—including BugHerd, Bugzilla, MantisBT, DebugMe, Donedone, Marker.io, Jira, Bughost, Zoho, Backlog, and Redmine—highlighting their features, integrations, pricing, advantages, and drawbacks to help teams choose the right solution.
This article explains the purpose of swap partitions, shows how to check current swap usage, and provides step‑by‑step instructions for creating swap space both via a dedicated disk partition and by using a swap file on a Linux server.
This article explains the concept of gray release, outlines a simple architecture with essential components, describes common routing strategies, and shows how to implement gray releases using Nginx, gateway services, and complex multi‑service scenarios to ensure controlled, low‑risk deployments.
This article explains how the presence or absence of a trailing slash in an Nginx proxy_pass directive affects request routing, demonstrates correct configurations with examples, and provides additional proxy and upstream settings for reliable backend forwarding.
This article outlines five best‑practice steps—including considering cluster architecture, planning recovery, simplifying operations, ensuring security, and leveraging Kubernetes portability—to help organizations reliably back up applications and data in Kubernetes environments.
This guide walks you through using the systemctl tool on modern Linux distributions to start, stop, restart, reload, enable, disable, and query services, manage system power, work with targets, handle remote hosts, and leverage related utilities like journalctl, systemd-analyze, and hostnamectl.
The article explains what digital transformation truly means for enterprises, outlines its three development stages, describes the core connection‑data‑intelligence framework, compares internal capability rebuilding with external ecosystem integration, and offers practical guidance on why and how companies should embark on digital transformation.
This guide shows how to prevent a Bash script from being executed multiple times by detecting existing instances, using lock files with process checks, and employing the flock command for reliable atomic locking, complete with practical code examples and pitfalls to avoid.
This guide demonstrates how to navigate to the RocketMQ bin directory and use various mqadmin CLI commands to list available commands, check help, monitor producer and consumer connections, query topic status, retrieve messages by offset or ID, and shut down the NameServer and brokers.
This guide explains three ways to monitor Ceph distributed storage using Zabbix—Agent2 with the RESTful module, Zabbix Sender, and custom scripts—providing step‑by‑step commands, configuration tips, and troubleshooting notes for reliable operations.
NetEase Cloud Communication’s service monitoring platform leverages data collection, preprocessing, alerting, and visualization pipelines—using HTTP APIs, Kafka, custom scripts, and NTSDB—to provide real-time insights, ensure stability, and support scalable, high‑throughput audio‑video services.
This article explains the role of Site Reliability Engineering (SRE) in bridging product and foundational technology development, outlines the software lifecycle, describes how SRE ensures system stability through controllability, observability, and protection, and provides practical best‑practice checklists and maturity levels for evaluating and improving reliability.
This article walks through a real‑world Kafka incident where a sudden surge in client connections caused ISR churn, frequent connection drops, and high response time, and explains how monitoring thread idle rates and increasing network and I/O thread counts restored stability.
This guide walks through installing GitLab CE on CentOS 8 via an RPM package, adjusting the gitlab.rb configuration, managing the GitLab service, testing access, and optionally connecting GitLab to an external PostgreSQL database running in Docker.
This article explains how internet companies can reduce soaring manual operations costs by applying intelligent monitoring techniques—such as pattern recognition and statistical anomaly detection—to automatically identify abnormal nodes among thousands of servers, streamline fault diagnosis, and improve service quality.
This guide walks through downloading the Jira Server installer, setting up a PostgreSQL database, executing the installation, opening required ports, adding the Atlassian agent for licensing, and completing initial configuration to get Jira Software 8.13.2 running on a Linux server.
This guide walks you through installing the interactive TLDR client Tldr++, explains its usage for quickly learning Linux commands, and demonstrates a complete workflow of downloading, extracting, and moving files—all without leaving the terminal.
This article explains how to perform URL redirection with Nginx by using the rewrite module for changing the browser address and the location/proxy_pass combination for keeping the address unchanged, including flag options and two practical configuration examples.
