This tutorial walks you through setting up a PXE‑based automated Linux installation environment, covering DHCP, TFTP, HTTP services, kickstart configuration, necessary boot files, and the final deployment of CentOS 6.5 on virtual machines.
This article explains the fundamentals of encryption, symmetric and asymmetric cryptography, digital certificates, PKI, and provides step‑by‑step guidance on using OpenSSL to generate keys, create a private CA, issue and revoke certificates for secure data transmission.
This article explains the definition of modularization in data centers, identifies the industry stakeholders and motivations behind modular data center adoption, evaluates the real benefits of micro‑modules, and provides a step‑by‑step methodology and practical recommendations for both large and small users.
Facebook has released a wide range of open‑source projects—including the FBOpen platform code, Open Compute hardware designs, core backend services like Cassandra, Hive, HipHop for PHP, and numerous developer tools—demonstrating its extensive commitment to sharing infrastructure, databases, and tooling with the global developer community.
The article describes how Qunar's group‑buying backend faced IO bottlenecks during large‑scale image conversion and solved the issue by moving intermediate files to a memory‑based tmpfs filesystem (/dev/shm), achieving a dramatic load reduction without code changes or server restarts.
This guide demonstrates how to set up static IP‑MAC bindings, enable IP source guard on GigabitEthernet interfaces, and configure global and VLAN‑specific DHCP Snooping with trusted ports on a Huawei router using command‑line syntax.
This comprehensive tutorial explains MySQL/MariaDB backup types, essential tools such as mysqldump, LVM snapshots, and Percona XtraBackup, and provides detailed command‑line procedures for full, incremental, and hot backups as well as reliable data restoration.
This article examines the concept of modularity in data centers, explains how standardization underpins true modular design, compares industry approaches such as micro‑modules and containerized solutions, and analyzes the standardization levels of major tech companies and colocation providers to guide implementation decisions.
While C++ enables writing highly performant code, developers should avoid sacrificing code readability and simplicity for marginal speed gains, distinguishing performance from efficiency, focusing optimization on critical sections, and leveraging tools and proper data layout to achieve optimal results without unnecessary complexity.
The article recounts the evolution from Douban's App Engine to Mango TV's Nebulium Engine and finally Project Eru, describing how Docker, Redis Cluster, MacVLAN networking, and custom resource scheduling were combined to build a scalable, cloud‑native platform for heterogeneous workloads.
The article explains how the Linux top command reveals filesystem cache usage, why large log files can waste cache memory, and proposes hourly log rotation with compression, using lsof to identify cached files and tools like zless to view compressed logs.
Facebook Messenger switched from a pull‑based JSON over HTTPS model to a push‑based snapshot‑incremental architecture using MQTT, Thrift, and a dual‑pointer Iris queue backed by MySQL and flash storage, cutting non‑media payload by 40% and reducing send‑failure rates by roughly 20%.
This article compiles a Q&A from the InfoQ Efficient Ops Talk, where expert Liu Yu discusses Puppet's limitations, compares automation tools like Ansible and MCollective, and offers practical advice for startups building sustainable release pipelines and managing Windows and cloud environments.
This article explains how to use the Linux tail command to monitor log files in real time, filter errors, and reliably continue following logs after rotation by using the -F option, providing practical guidance for system administrators and developers.
This article examines key 2015 mobile strategy considerations—including the rise of low‑code visual development, the adoption of bimodal IT, cloud‑based development, and the HTML5 versus native debate—to help enterprises boost productivity, reduce backlog, and make informed technology choices.
The article presents a comprehensive overview of algorithms for analyzing Weibo’s social network, covering label propagation, user similarity via LDA, temporal and interaction factors, community detection, influence ranking using PageRank variants, and methods for identifying spam accounts.
This article summarizes a comprehensive talk on Puppet covering its evolution, core concepts, architecture, ecosystem, practical use cases such as building a CMDB, automated deployment pipelines, OpenStack deployment, and the interplay with Docker, highlighting how Puppet drives modern operations automation.
The article explains how to safely edit a particular line range in a large file using the Unix sed command, guiding readers through consulting the manual, understanding address syntax, and providing a concrete example command to replace text within the specified lines.
The article explores the evolution from single‑core processors to multi‑core systems, explains threading, blocking, and synchronization concepts, and compares high‑performance communication models such as asynchronous I/O, IOCP on Windows and epoll on Linux, highlighting their trade‑offs for backend server scalability.
This article chronicles Suning’s journey from early SAP‑based data warehouses to a modern, open‑source big data platform featuring real‑time collection, Hadoop‑Hive offline processing, Storm‑based streaming, and a visual development environment, highlighting how each layer addresses growing data volume, variety, and business demands.
