This article provides practical guidance on server hardware selection, Linux kernel parameter tuning, and MySQL configuration adjustments to improve overall system performance, reliability, and efficiency for production environments.
This article outlines a comprehensive approach to diagnosing and optimizing performance problems in production business systems, covering analysis processes, hardware, OS, database, middleware, JVM tuning, code inefficiencies, and monitoring techniques to identify root causes and improve system reliability.
Shanghai Pudong Development Bank’s eight systems passed the third‑level DevOps continuous‑delivery assessment, showcasing how standardized processes, tool empowerment, and a unified maturity model can dramatically boost development efficiency, quality, and competitive advantage in the banking sector.
This tutorial explains how to create and configure Grafana Stat panels—including text and background modes, threshold‑based coloring, unit settings, and Markdown/HTML text panels—to visualize metrics such as node uptime, CPU cores, and total memory on a dashboard.
The 2021 GOPS Global Operations Conference in Shanghai announced the latest DevOps capability maturity assessment results, detailing the enterprises that achieved continuous delivery level 3 and technical operation level 2+, explaining the new 2+ grading, and outlining the DevOps maturity model and its industry adoption.
The paper presents a unified alert convergence system that centralizes metric calculation, detection, and alarm handling across monitoring subsystems, employing mechanisms such as convergence, claiming, silencing, escalation, and a Redis‑based delayed queue integrated via Kafka or REST to reduce alarm fatigue, improve MTTA/MTTR, and enable future AI‑driven AIOps.
This step‑by‑step guide shows how to initialize a CentOS 7 host, disable firewalls, configure time sync, prepare storage disks, pull the official Ceph Docker image, and launch MON, OSD, MGR, RGW, and MDS containers to build a functional single‑node Ceph cluster with a dashboard.
This article details the design principles, brand‑value strategies, quality control, and cost‑saving measures used to launch the first 58 Daojia premium service center and expand the concept to nearly a hundred physical stores nationwide.
This guide explains how to use Redis's built-in redis-benchmark tool to simulate concurrent client load, interpret key performance metrics such as request latency and throughput, and monitor server resource usage, helping operators prevent cache-related failures like penetration and avalanche after deployment.
The article outlines how enterprises can assess digital transformation outcomes, formulate effective strategies, build large‑scale capabilities, foster agile culture, and continuously monitor progress, drawing on McKinsey research and real‑world examples to guide traditional firms toward sustainable digital growth.
This article examines how thoughtfully crafted main visuals influence user engagement and sales in e‑commerce campaigns, presenting four case studies from the “Super Welfare Day” series that illustrate design background, strategy, visual style, implementation, and measurable results such as an 85.2% GMV lift.
This guide demonstrates how to create a Grafana Table panel to monitor server resources, add multiple queries, merge them using the Transform feature, customize fields and units, and organize rows for a comprehensive dashboard view.
Learn step-by-step Linux techniques—including df, du, find, and lsof commands—to pinpoint large directories or files, filter results, handle hidden space consumption, and adjust reserved filesystem space, ensuring you can efficiently resolve unexpected disk usage issues on your servers.
This article explains how to use Zabbix Server 5.4 to monitor TiDB clusters by configuring HTTP agents, converting Prometheus metrics to JSON, creating custom macros, linking TiDB templates, and verifying data collection, while noting version and OS requirements.
This article explains Redis Sentinel’s role in high‑availability deployments, covering its architecture, monitoring and notification mechanisms, automatic failover process, configuration steps for master‑slave and sentinel nodes, and practical guidelines for building a reliable Redis cluster.
This article explains how to build a terabyte‑level log monitoring platform for micro‑service environments by unifying log collection with FileBeat, enriching observability through Elastic APM, processing streams via Kafka Streams, and visualizing metrics with Grafana and Kibana, while addressing cost‑effective filtering and retention strategies.
This article explains common Kubernetes issues such as node memory leaks and certificate expiration, provides diagnostic commands, and offers detailed solutions including disabling kmem accounting, recompiling runc and kubelet, and extending certificate validity to ten years.
This guide shares hard‑learned Linux operations lessons—testing before changes, rigorous backups, SSH hardening, firewall rules, monitoring, and systematic performance tuning—to help engineers avoid costly mistakes and keep services stable and secure.
In a seven‑day sprint, Nanguo Film transformed its entire streaming platform by moving over 30 systems to Alibaba Cloud's Serverless Application Engine, cutting operational effort by 70%, reducing costs by more than 40%, and achieving ten‑fold faster scaling while maintaining zero downtime.
The article explains that digital transformation is a customer‑driven, end‑to‑end business overhaul distinct from IT transformation, which focuses on technology, highlighting three major differences, the risks of conflating the two, and why digital transformation should ultimately drive IT transformation for lasting competitive advantage.
This guide explains how to diagnose unexpected disk usage on Linux by using df, du, find, and lsof commands, demonstrates efficient ways to locate large directories or deleted files, and shows how to adjust reserved space with tune2fs to reclaim lost storage.
The article explains four major software release strategies—blue‑green deployment, rolling release, canary (gray) release, and A/B testing—detailing their principles, advantages, drawbacks, and practical considerations for safely rolling out new versions in production environments.
Service degradation involves strategically reducing or disabling non‑essential features during traffic spikes or failures to maintain core functionality, covering concepts like SLA levels, fallback data, rate‑limiting, timeout handling, circuit breaking, and front‑end and back‑end downgrade techniques for high‑availability systems.
This article explains how to use Kubernetes monitoring features such as service details, topology maps, and pod metrics to quickly identify load‑balancing imbalances, cluster scheduling bottlenecks, and resource hotspot problems, providing practical steps and visual examples for improving system reliability and performance.
The article explains how AIOps, built on DevOps principles and leveraging AI and big‑data analytics, helps enterprises overcome governance challenges, improve operational efficiency, and accelerate digital transformation, highlighting standards, real‑world evaluations, and key benefits such as real‑time analysis and noise reduction.
Service degradation, a crucial reliability technique, involves selectively disabling non-essential features, applying rate limiting, timeout handling, fallback data, and tiered switches across front‑end, back‑end, and infrastructure layers to maintain core functionality during traffic spikes or component failures, ensuring high availability and meeting SLA targets.
This article explains why Redis needs high availability, defines common failure scenarios, compares several HA architectures—including single‑instance, master‑slave with one or multiple Sentinel processes, and VIP‑based solutions—and provides step‑by‑step guidance for deploying a robust Redis Sentinel cluster.
The article explains how digital transformation requires lean management and data‑driven decision making, using time‑tracking tools like TAPD to capture work hours, analyze costs, and link talent utilization to project outcomes for improved operational efficiency and transparent business guidance.
This article examines how applying the CST design model, user segmentation, and psychological principles such as mental accounting and social proof can significantly improve conversion rates for a savings membership product.
In this detailed account of Huolala's 2021 Cloud Operations Best Practices talk, the company shares its multi‑cloud architecture, service‑oriented governance, capacity‑testing, monitoring, and risk‑prediction techniques that together ensure high‑availability and efficient scaling for its diverse logistics services.
This article shares a comprehensive guide to building robust logging systems for Node.js backend services, covering log types, storage options, performance considerations, full‑trace design, custom field schemas, integration with cloud log platforms, and practical troubleshooting examples.
The article explains how to assess system capacity by analyzing daily traffic, calculating average and peak QPS, applying the 80/20 rule, conducting stress tests, and adjusting resources, illustrated with a sports event example and a book reservation system case study.
Alibaba’s AServer access gateway, handling billions of users and millions of QPS, transitioned from a monolithic tengine‑based system to a cloud‑native, containerized architecture with Kubernetes, Pilot, and Envoy, improving operational complexity, dynamic routing, traffic isolation, and scalability for massive e‑commerce traffic.
Zhengzhou Bank’s new retail loan system passed the third‑level DevOps continuous‑delivery assessment, leading to a 2.31‑fold increase in annual delivery demand, an 18‑day reduction in cycle time, and a shift to automated, seconds‑level environment delivery, illustrating the transformative power of standardized DevOps practices.
The 2021 DevOps International Summit in Beijing announced the latest DevOps capability maturity assessments for dozens of enterprises, introduced the new AIOps maturity model, and highlighted the global significance of China’s DevOps standards across finance, telecom, and other industries.
The DevOps International Summit in Beijing announced that 42 enterprises covering 108 projects achieved level‑3 maturity in the CAICT DevOps Capability Model, highlighting the impact of standardized tools and processes on software delivery efficiency across finance, telecom and other sectors.
This guide demonstrates how to batch‑replace text with sed, rename files using Bash substring expansion, and change file extensions efficiently on a Linux system, providing clear command examples and practical one‑liners for everyday operations.
After users in Singapore reported inability to resolve the internal domain goofy.app, a systematic investigation revealed that DNSSEC misconfiguration—specifically an incorrect DS record—caused DNS resolution failures globally, while Chinese DNS servers succeeded due to disabled DNSSEC validation, and removing the faulty key resolved the issue.
This article presents a comprehensive, step‑by‑step guide on improving system reliability through early fault detection, scope reduction, frequency reduction, and rapid incident handling, using real‑world practices from Baidu's commercial hosting platform.
This guide walks through every Dockerfile instruction—from variables and FROM to ENTRYPOINT and HEALTHCHECK—explaining syntax, usage tips, and common pitfalls, so you can build efficient, reproducible container images with confidence.
This guide shares practical Linux operations lessons—ranging from cautious command use, rigorous backup habits, and secure SSH configurations to comprehensive monitoring and performance tuning—to help teams avoid costly mistakes and maintain stable, reliable services.
This article details ZTO's evolution from traditional offline and online load‑testing approaches—highlighting their shortcomings—to a comprehensive full‑chain performance testing solution that uses JavaAgent probes, shadow resources, and a structured deployment and verification process to ensure safe, accurate production testing.
This guide demonstrates how to list current pod instances, increase the replica count of a deployment, and verify the updated pod status in a Kubernetes cluster using kubectl commands.
This article describes a lightweight, resource‑efficient log collection solution that combines Filebeat agents, optional Logstash aggregation, and Kafka transport, detailing configuration choices, meta‑persistence, back‑pressure mechanisms, monitoring setup, and deployment architecture for reliable at‑least‑once delivery.
This article examines how financial institutions can manage risk and improve operations for existing loan customers by analyzing client flow, regulatory impacts, accelerated deterioration, and layered segmentation, and by applying advanced models such as rule‑based alerts, B‑card scoring, LSTM, and survival analysis to enable timely risk detection and targeted cross‑selling.
This article explains how to design and implement a TB‑level log monitoring platform for micro‑service environments using ELK Stack, Filebeat, Elastic APM, Kafka Streams, Prometheus, and Grafana, covering data collection, filtering, storage, and visualization while addressing cost and resource constraints.
This article explains what gray release (canary deployment) is, why it is needed to reduce risk and improve product quality, and provides a step‑by‑step guide covering strategy, user targeting, data feedback, rollback, deployment architectures, and version management for modern software operations.
This article shares ten practical operations guidelines—from avoiding duplicated work and embracing mistakes to emphasizing monitoring, backup roles, clear division of labor, and continuous improvement—aimed at boosting reliability, efficiency, and team cohesion for both engineers and managers.
This article presents a curated list of powerful Linux command-line utilities—ranging from fast file searchers and interactive Git viewers to system monitors and multi‑threaded downloaders—each explained with concise descriptions and usage examples to help developers and sysadmins work more efficiently.
This article introduces the fundamentals of Site Reliability Engineering (SRE), explains how to measure service stability with metrics like MTTR, MTBF, and availability, outlines the SRE workflow from prevention to post‑mortem, and discusses how to identify and reduce technical debt to improve system health.
This article explains what MySQL slow queries are, why they cause system failures, proposes multi‑dimensional metrics to assess their severity, outlines concrete guidelines and change standards, and shares real‑world optimization cases and daily operational practices for eliminating slow SQL.
This article compiles a practical set of Linux command examples and Java debugging utilities—including tail, grep, awk, find, tsar, btrace, Greys, Arthas, JProfiler, and various JVM tools—to help backend developers quickly diagnose and resolve performance and stability issues in production environments.
This article outlines a comprehensive approach to handling call‑center incidents, covering common troubleshooting steps, proactive monitoring enhancements, well‑structured emergency plans, and intelligent event‑driven automation to reduce downtime and improve operational efficiency.
The article explains service degradation concepts, defines SLA levels and the meaning of six nines, and details various degradation techniques such as fallback data, rate‑limiting, timeout, fault handling, read/write strategies, frontend safeguards, and the use of switches and pre‑embedding to maintain system availability during traffic spikes or failures.
The 2021 DORA DevOps Report reveals that elite teams outperform low‑performing teams by adopting SRE principles, high‑quality documentation, integrated security, modern technical practices such as loose coupling, continuous testing, CI/CD, and a performance‑driven culture that fosters belonging and inclusion.
This article surveys a collection of Linux command‑line utilities that can monitor overall, per‑interface, per‑socket, and per‑process network bandwidth, explaining how each tool works, what data it reports, and how to install it on major distributions.
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.
