All Articles

140470 articles · Page 6963 of 7024

Jul 19, 2015 · Information Security

Understanding HTTP and DNS Hijacking and Practical Anti‑Hijacking Solutions for Mobile Apps

This article explains the mechanisms of HTTP and DNS hijacking, illustrates real‑world examples, analyzes their causes and impacts on mobile applications, and presents practical anti‑hijacking techniques such as data validation, HttpDNS, ISP cache handling, illegal redirect blocking, and monitoring strategies.

DNS hijackingHTTP hijackinganti-hijacking

0 likes · 10 min read

Understanding HTTP and DNS Hijacking and Practical Anti‑Hijacking Solutions for Mobile Apps

Art of Distributed System Architecture Design

Jul 19, 2015 · Information Security

25 Essential PHP Security Best Practices for Hardened Web Servers

This guide presents 25 practical PHP security best practices, covering configuration files, module management, error handling, file uploads, remote code execution, SQL safety, resource limits, user permissions, SELinux, firewall rules, and additional tools, to help administrators harden PHP deployments on Linux servers.

LinuxPHPbackend

0 likes · 27 min read

25 Essential PHP Security Best Practices for Hardened Web Servers

Java High-Performance Architecture

Jul 19, 2015 · Operations

How Keepalived Enables Automatic Failover and Load Balancing for High‑Availability Clusters

Keepalived, built on LVS, automatically monitors service nodes, isolates failed machines, and performs seamless failover between load balancers using VRRPv2, allowing web servers to be added or removed without manual intervention, thus ensuring high availability and efficient load distribution.

Cluster MonitoringHigh AvailabilityLVS

0 likes · 2 min read

How Keepalived Enables Automatic Failover and Load Balancing for High‑Availability Clusters

Architect

Jul 18, 2015 · Databases

Qihoo 360’s Use of MongoDB: Architecture, Practices, and Lessons Learned

The article details how Qihoo 360 adopted MongoDB since 2011, scaling to over 100 applications, 1,500 instances and 20 billion daily queries, and shares their architectural choices, backup strategies, best‑practice recommendations, and advice for teams considering MongoDB in large‑scale, cloud‑native environments.

Backup StrategiesBig DataDatabase Architecture

0 likes · 12 min read

Qihoo 360’s Use of MongoDB: Architecture, Practices, and Lessons Learned

Java High-Performance Architecture

Jul 18, 2015 · Operations

Mastering vmstat: How to Monitor Linux Performance in Real Time

This guide explains how to use the Linux vmstat command to monitor system performance, detailing its output fields such as process states, memory, swap, I/O, system interrupts, and CPU usage, and shows how to interpret each metric for effective troubleshooting.

CPUmemoryperformance monitoring

0 likes · 4 min read

Mastering vmstat: How to Monitor Linux Performance in Real Time

Art of Distributed System Architecture Design

Jul 18, 2015 · Frontend Development

Understanding Browser Cache Mechanisms and HTTP Header Controls

This article explains how browsers cache resources, the role of HTTP response headers such as Expires, Cache‑Control, ETag and Last‑Modified, and how conditional requests and different refresh actions affect caching behavior to improve web performance.

Browser CacheCache-ControlETag

0 likes · 12 min read

Understanding Browser Cache Mechanisms and HTTP Header Controls

Practical DevOps Architecture

Jul 17, 2015 · Operations

Huawei IPSG Configuration Guide: Static and Dynamic Binding Examples

This guide explains how to configure Huawei IPSG on S-series devices by creating user‑bind tables and enabling IP source checking, providing both static and dynamic configuration examples with VLAN, DHCP snooping, and interface settings.

DHCP snoopingHuaweiIP Source Guard

0 likes · 3 min read

Huawei IPSG Configuration Guide: Static and Dynamic Binding Examples

Huawei Cloud Developer Alliance

Jul 17, 2015 · Information Security

How a Centralized Network Policy Solved Security Management for China Construction Bank

China Construction Bank faced fragmented security policy management across its thousands of branches, but by leveraging Huawei eSDK and a centralized controller, Qianfang Technology enabled the head office to configure and distribute policy templates, allowing flexible, region‑specific terminal security while maintaining unified oversight.

Centralized ManagementHuawei eSDKNetwork Policy

0 likes · 3 min read

How a Centralized Network Policy Solved Security Management for China Construction Bank

MaGe Linux Operations

Jul 17, 2015 · Backend Development

How to Use Nginx to Serve Separate PC and Mobile Sites with Auto Detection

This guide explains how to configure Nginx to automatically detect user devices and redirect them to distinct PC or mobile websites, using both server‑side User‑Agent checks and client‑side JavaScript with cookies for manual switching and 24‑hour preference storage.

Server Configurationfrontendmobile detection

0 likes · 10 min read

How to Use Nginx to Serve Separate PC and Mobile Sites with Auto Detection

Java High-Performance Architecture

Jul 17, 2015 · Operations

How to Interpret Linux ‘uptime’ Load Average and Detect High CPU Load

Understanding Linux system load involves checking the average number of processes waiting for CPU time, and the ‘uptime’ command provides the current time, uptime duration, active users, and three load average values for the past 1, 5, and 15 minutes, helping you gauge performance.

CPU loadPerformanceSystem Monitoring

0 likes · 2 min read

How to Interpret Linux ‘uptime’ Load Average and Detect High CPU Load

Art of Distributed System Architecture Design

Jul 17, 2015 · Databases

12 Essential MySQL Tips Every Database Developer Should Know

Discover twelve practical MySQL techniques—from avoiding dump file edits and tuning MyISAM block size to using EXPLAIN, query caching, and secure root password changes—that can boost performance, prevent data loss, and streamline database management for developers.

Database AdministrationDatabase TipsMySQL

0 likes · 8 min read

12 Essential MySQL Tips Every Database Developer Should Know

Qunar Tech Salon

Jul 16, 2015 · Backend Development

Understanding Java IO Streams: Concepts, Classes, Buffering, and Exception Handling

This article explains why Java introduced the stream concept, details the various byte and character stream classes, discusses buffering, outlines common IO exceptions, and shows how to properly close streams and specify character encodings for robust backend file handling.

BufferedReaderFile I/OIO Streams

0 likes · 7 min read

Understanding Java IO Streams: Concepts, Classes, Buffering, and Exception Handling

MaGe Linux Operations

Jul 16, 2015 · Operations

Mastering Web Caching with Varnish: From Basics to Advanced Configuration

This article explains what web caching is, how cache hit rates are measured, the request‑processing flow, freshness‑checking methods and cache‑control directives, then introduces Varnish as a high‑performance HTTP reverse‑proxy, detailing its threads, state machines, VCL syntax, installation, configuration examples and cache‑purge techniques.

Cache-ControlHTTP CachingVarnish

0 likes · 16 min read

Mastering Web Caching with Varnish: From Basics to Advanced Configuration

Alibaba Cloud Infrastructure

Jul 16, 2015 · Information Security

Analysis of a Node.js Buffer Overflow Vulnerability and Exploit Design

This article analyzes a Node.js buffer‑overflow vulnerability triggered by oversized UTF‑8 decoding, explains the underlying V8 call stack and key functions, demonstrates an exploit using crafted POST requests, and outlines the official security fix that adds proper bounds checking.

Node.jsPATCHV8

0 likes · 11 min read

Analysis of a Node.js Buffer Overflow Vulnerability and Exploit Design

Meituan Technology Team

Jul 16, 2015 · Industry Insights

How Leading O2O Platforms Engineer Scalable, Low‑Cost Architecture – Insights from Meituan, 58 Daojia & Didi

The article summarizes the Meituan Technology Salon where experts from Meituan, 58 Daojia and Didi shared their O2O architecture strategies, covering supply‑chain system design, order‑dispatch and data analysis, CRM automation, and low‑cost architectural evolution to support rapid business growth and operational efficiency.

O2Oarchitectureindustry insights

0 likes · 8 min read

How Leading O2O Platforms Engineer Scalable, Low‑Cost Architecture – Insights from Meituan, 58 Daojia & Didi

Meituan Technology Team

Jul 16, 2015 · Frontend Development

Componentization Development Practices at Meituan: From Version 1.0 to 3.0

Meituan’s componentization journey progressed from early resource‑centric modules (1.0) through mature lifecycle, data‑binding, and Flux integration (2.0) to a React‑based, NPM‑distributed, Reduce‑bundled, Turbo‑enhanced ecosystem (3.0), systematically reducing front‑end complexity while boosting reuse, performance, and full‑stack development efficiency.

Component ArchitectureData BindingFlux

0 likes · 14 min read

Componentization Development Practices at Meituan: From Version 1.0 to 3.0

Meituan Technology Team

Jul 16, 2015 · Mobile Development

Understanding RACSignal Subscription, Multicast, and Replay in ReactiveCocoa

The article breaks down RACSignal’s three‑step subscription flow, then explains how multicast and replay operators—built on RACSubject and RACReplaySubject—share a single source, buffer values, and ensure side‑effects like network requests execute only once regardless of how many subscribers attach.

Objective‑CRACSignalReactiveCocoa

0 likes · 18 min read

Understanding RACSignal Subscription, Multicast, and Replay in ReactiveCocoa

Java High-Performance Architecture

Jul 16, 2015 · Databases

When MySQL Indexes Fail: 4 Common Pitfalls to Avoid

This article explains four situations where MySQL will ignore indexes—using a non‑leading column in a composite index, leading wildcards in LIKE queries, OR conditions with non‑indexed fields, and unquoted string literals—offering guidance to improve query performance.

IndexingMySQLSQL

0 likes · 3 min read

When MySQL Indexes Fail: 4 Common Pitfalls to Avoid

Art of Distributed System Architecture Design

Jul 16, 2015 · Information Security

Beyond GET/POST: Testing HTTP Headers and Cookies for SQL Injection

This article examines how web vulnerability scanners handle non‑traditional input vectors such as HTTP headers and cookies, demonstrates manual exploitation techniques for header‑based SQL injection, compares scanner coverage and accuracy, and offers practical guidance for developers and penetration testers.

SQL InjectionSQLMapcookies

0 likes · 14 min read

Beyond GET/POST: Testing HTTP Headers and Cookies for SQL Injection

Model Perspective

Jul 15, 2015 · Fundamentals

Unlock Powerful Memory Techniques: Top Books That Transform Learning

The author shares a personal journey into memory research, reviewing four influential books on mind mapping, right‑brain photographic memory, comprehensive memory systems, and the “memory box” technique, highlighting how visual cues and structured repetition can dramatically improve learning and retention.

Learning Strategiescognitive psychologymemory techniques

0 likes · 7 min read

Unlock Powerful Memory Techniques: Top Books That Transform Learning