This guide explains key concepts of open source, compilation, and executables, then details the configure‑make‑install workflow and provides a step‑by‑step tutorial for compiling, installing, configuring, and testing Nginx from source on a Linux system.
ZMap is a high‑speed network scanner developed at the University of Michigan, and this guide covers its installation on various Linux distributions, core command‑line options, configuration files, advanced extensions like banner grabbing and UDP probes, and discusses its underlying SYN‑RST scanning mechanism and security considerations.
This article offers goal‑oriented, data‑driven advice and checklists for architecture refactoring, emphasizing realistic technology selection, pressure management, business understanding, handling non‑technical influences, code‑quality practices, and team readiness to ensure effective, sustainable redesigns.
This guide provides a step‑by‑step configuration for setting up an L2TP VPN on Huawei equipment, covering ACL rules, IP pools, user authentication, interface settings, virtual templates, PPP parameters, static routing, and related commands.
This article explains core performance testing concepts—including QPS, concurrency, response time, and throughput calculations—illustrates how to estimate system capacity, relate traffic metrics to daily PV, and outlines the perspectives of users, administrators, developers, and test engineers for evaluating software performance.
This tutorial walks you through installing OpenVPN on a Linux server, generating server and client certificates, configuring the OpenVPN service, enabling IP forwarding, and setting up client connections with detailed commands and screenshots.
Whitepages migrated several high‑traffic services from a Ruby monolith to Scala running on the Akka actor framework, achieving dramatically lower latency and higher throughput while sharing the practical benefits, challenges, and best‑practice insights they discovered during the transition.
The article recounts how Exxon’s early 1970s funding helped Zilog create the influential Z80 microprocessor, yet the oil giant’s over‑ambitious acquisition strategy prevented it from becoming a lasting technology powerhouse like IBM or Intel.
This article examines key considerations for building highly scalable and available systems on Azure, outlining four architectural dimensions—scalability, availability, manageability, and feasibility—while discussing patterns, anti‑patterns, measurable resources, queue‑based load balancing, authentication services, and common pitfalls such as configuration errors and SQL injection.
The FAA has warned airlines that a potential software bug in Boeing 787 aircraft could cause a generator control unit overflow after 248 days of continuous operation, leading to loss of AC power and possible loss of aircraft control, prompting an airworthiness directive for a software fix.
This article details how the high‑traffic mobile platform 糗百 migrated its massive image repository to Qiniu Cloud without service interruption, using the qrsync upload tool combined with Qiniu’s mirror storage to smoothly transfer cold data, handle hot data, and alleviate I/O bottlenecks.
Dropbox operations engineer Rajiv shares practical scalability design techniques, including load‑testing, app‑specific metrics, Bash analytics, log management, UTC usage, and the reliable technology stack that enables a service with 40 million users to run with a very small operations team.
This article explains what network protocols are, why layered designs simplify communication, and compares the OSI seven‑layer model with the TCP/IP reference model, detailing each layer’s functions, typical protocols, and practical examples.
This article examines the challenges of lazy loading in J2EE ORM tools, compares eager fetching and pre-fetching, and proposes a modular solution using Aspect‑Oriented Programming to inject custom fetching strategies at the repository level, reducing SQL queries, connection usage, and code bloat.
In this presentation, seasoned R&D engineer Bian Xuebin, who leads Suning’s object storage platform, shares the design principles and architectural strategies behind Suning’s multi‑tenant object storage system, illustrated through a series of detailed slides.
This article provides a step‑by‑step network configuration example showing how to set external and internal IP addresses, enable DHCP, define static routes, create ACL rules, and configure NAT outbound translation on a router.
This article provides a comprehensive overview of MySQL/MariaDB, detailing its architecture, core components, server and client programs, command-line options, data types, SQL language parts, metadata, and variable management, offering practical guidance for developers and administrators.
This article explains Android's UI rendering pipeline, the role of VSync and Triple Buffer, why FPS alone cannot reflect perceived smoothness, and introduces the SM (Smoothness) metric that quantifies UI fluidity by counting VSync loops and skipped frames per second.
A detailed case study reveals that leaking file descriptors in Android, especially from SoundPool, exhaust the 1024‑FD limit on Adreno GPUs, causing OpenGL swap buffer failures and a variety of crashes, and shows how proper FD management resolves the issue.
The article presents Uber engineering manager Raffi Krikorian’s twelve practical rules for planning, executing, and evaluating software architecture refactoring, emphasizing clear purpose, measurable goals, incremental delivery, current state assessment, data‑driven decisions, and diligent management of technical debt.
