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2473 articles · Page 19 of 25
IT Architects Alliance
IT Architects Alliance
Jun 9, 2021 · Fundamentals

Essential Networking Q&A: From OSI Layers to IP Addressing Explained

This article provides concise explanations of core networking concepts, covering links, OSI model layers, backbone networks, LANs, nodes, routers, point‑to‑point links, FTP, subnet masks, UTP cable limits, data encapsulation, network topologies, VPN, NAT, routing protocols, firewalls, DNS, IPv6, RSA, and many other fundamental topics essential for anyone studying computer networks.

LANNetworkingOSI model
0 likes · 29 min read
Essential Networking Q&A: From OSI Layers to IP Addressing Explained
IT Architects Alliance
IT Architects Alliance
Jun 6, 2021 · Fundamentals

Design Principles and Architecture of Distributed File Systems

This article provides a comprehensive overview of distributed file systems, covering their historical evolution, essential requirements, architectural models with and without central nodes, persistence strategies, scalability, high availability, performance optimization, security mechanisms, and additional considerations such as space allocation, file deletion, small‑file handling, and deduplication.

Consistencydistributed file systemhigh availability
0 likes · 21 min read
Design Principles and Architecture of Distributed File Systems
Laravel Tech Community
Laravel Tech Community
Jun 1, 2021 · Backend Development

mcrypt_module_close() – Close Encryption Module (PHP)

The PHP function mcrypt_module_close() releases an opened encryption module by taking a resource descriptor as its argument and returns TRUE on success or FALSE on failure, providing a simple way to clean up cryptographic resources in backend applications.

encryptionmcryptsecurity
0 likes · 1 min read
mcrypt_module_close() – Close Encryption Module (PHP)
Liangxu Linux
Liangxu Linux
May 31, 2021 · Fundamentals

Mastering DNS: Architecture, Configuration, and Security Essentials

This comprehensive guide explains DNS fundamentals, its hierarchical distributed database design, TCP/UDP usage, recursive versus authoritative servers, configuration with BIND, load‑balancing techniques, sub‑domain delegation, and common security concerns such as amplification attacks.

BINDDNSDomain Delegation
0 likes · 18 min read
Mastering DNS: Architecture, Configuration, and Security Essentials
21CTO
21CTO
May 31, 2021 · Fundamentals

Mastering DNS: Core Concepts, Configuration, and Security Insights

This comprehensive guide explains DNS fundamentals, its distributed hierarchical database, TCP/UDP usage, top‑level domains, resolution workflow, recursive versus authoritative servers, caching, smart routing, bind configuration, load balancing, sub‑domain delegation, debugging tools, and DNS amplification attacks.

BINDDNSDomain Name System
0 likes · 18 min read
Mastering DNS: Core Concepts, Configuration, and Security Insights
Laravel Tech Community
Laravel Tech Community
May 28, 2021 · Backend Development

PHP mcrypt_generic() Function for Data Encryption

The article explains PHP's mcrypt_generic() function, detailing its purpose for encrypting data, required parameters ($td as the encryption descriptor and $data as the plaintext), the need for block-size-aligned input, initialization and cleanup steps, and the nature of its returned encrypted output.

PHPencryptionmcrypt
0 likes · 2 min read
PHP mcrypt_generic() Function for Data Encryption
Volcano Engine Developer Services
Volcano Engine Developer Services
May 27, 2021 · Cloud Native

How Service Mesh Powers TikTok’s Spring Festival Red Packet Traffic Surge

This article, based on a Volcano Engine developer community meetup, explains how a self‑developed Service Mesh provides unified traffic management for TikTok’s massive Spring Festival Red Packet event, covering architecture, stability, security, and efficiency strategies across multi‑language microservices in complex environments.

Traffic Managementcloud nativemicroservices
0 likes · 19 min read
How Service Mesh Powers TikTok’s Spring Festival Red Packet Traffic Surge
php Courses
php Courses
May 26, 2021 · Backend Development

PHP Interview Questions: Array Merging, Integer Validation, Unicode Case Conversion, File Writability, Permission Handling, Upload Validation, and URL Encoding Differences

This article presents a series of PHP interview questions covering array merging methods, integer validation, Unicode‑compatible case conversion, reliable file‑writability checks, permission‑setting functions, secure image upload verification, and differences between PHP and JavaScript URL encoding, each accompanied by code examples.

arrayfile I/Ointerview
0 likes · 8 min read
PHP Interview Questions: Array Merging, Integer Validation, Unicode Case Conversion, File Writability, Permission Handling, Upload Validation, and URL Encoding Differences
Sohu Tech Products
Sohu Tech Products
May 19, 2021 · Mobile Development

Design and Implementation of an iOS Mobile Log System Using WCDB

This article describes the requirements, architecture, API design, database selection, retention policies, security measures, and performance optimizations of a new iOS log system that records business, network, and player logs, uses WCDB for storage, and employs active pull and encrypted chunked uploads to improve issue diagnosis.

WCDBiOSlog system
0 likes · 16 min read
Design and Implementation of an iOS Mobile Log System Using WCDB
MaGe Linux Operations
MaGe Linux Operations
May 18, 2021 · Fundamentals

Understanding DNS: From Basics to Advanced Configuration and Security

This article explains the DNS system, its distributed architecture, protocol details, hierarchical database structure, resolution process, server types, configuration with BIND, load balancing, subdomain delegation, and security considerations such as amplification attacks, providing a comprehensive guide for operations and networking professionals.

BINDDNSDomain Name System
0 likes · 18 min read
Understanding DNS: From Basics to Advanced Configuration and Security
Spring Full-Stack Practical Cases
Spring Full-Stack Practical Cases
May 18, 2021 · Backend Development

Troubleshooting Spring Boot OAuth2 Integration: Session Issues and Fixes

This guide walks through configuring Spring Boot 2.3.10 with OAuth2 client support, detailing required dependencies, application and security settings, common session‑related errors, step‑by‑step debugging of OAuth2LoginAuthenticationFilter and OAuth2AuthorizationRequestRedirectFilter, and the final solution of aligning hostnames to preserve cookies.

OAuth2SessionSpring Boot
0 likes · 9 min read
Troubleshooting Spring Boot OAuth2 Integration: Session Issues and Fixes
Laravel Tech Community
Laravel Tech Community
May 17, 2021 · Backend Development

hash_update() – Adding Data to an Active Hash Context

hash_update() is a PHP function that appends a string of data to an active hash computation context created by hash_init(), takes a resource context and a string data as parameters, and returns TRUE upon successful update of the hash digest.

PHPhashhash_update
0 likes · 1 min read
hash_update() – Adding Data to an Active Hash Context
MaGe Linux Operations
MaGe Linux Operations
May 17, 2021 · Information Security

How to Harden Linux: Essential Security Settings and Best Practices

This comprehensive guide walks you through selecting a secure Linux distribution, configuring kernel and sysctl parameters, applying boot‑time hardening, managing network and firewall rules, restricting root access, enabling MAC policies, sandboxing applications, and employing advanced memory and entropy techniques to dramatically improve system privacy and resilience against attacks.

$rootKernelLinux
0 likes · 55 min read
How to Harden Linux: Essential Security Settings and Best Practices
Laravel Tech Community
Laravel Tech Community
May 15, 2021 · Backend Development

PHP hash_pbkdf2() Function: Generating PBKDF2 Key Derivation

This article explains the PHP hash_pbkdf2() function, detailing its parameters, return values, and usage with a complete example that demonstrates how to derive a PBKDF2 key using a chosen hash algorithm, password, salt, iteration count, and output format.

PBKDF2encryptionhash_pbkdf2
0 likes · 3 min read
PHP hash_pbkdf2() Function: Generating PBKDF2 Key Derivation
政采云技术
政采云技术
May 11, 2021 · Backend Development

An Introduction to Deno: Architecture, Features, and Hands‑On Usage

This article explains what Deno is, its origins and motivations, compares it with Node.js, describes its Rust‑based architecture, security model, built‑in tools, TypeScript and WebAssembly support, and provides step‑by‑step examples for installation, HTTP requests, remote imports, and building simple services.

DenoJavaScript runtimeNode.js alternative
0 likes · 19 min read
An Introduction to Deno: Architecture, Features, and Hands‑On Usage
php Courses
php Courses
May 11, 2021 · Information Security

Implementing a Simple CAPTCHA Generator and Recognizer in PHP

This article demonstrates how to create a basic CAPTCHA image with PHP, convert it to a binary matrix, segment characters, extract feature patterns, and recognize the code by matching against stored templates, providing full source code and a sample execution result.

Pattern Matchingimage processingsecurity
0 likes · 11 min read
Implementing a Simple CAPTCHA Generator and Recognizer in PHP
Open Source Linux
Open Source Linux
May 11, 2021 · Information Security

Ultimate Guide to Hardening Linux: Boost Security & Privacy

This comprehensive guide explains how to dramatically improve Linux security and privacy by selecting hardened distributions, configuring kernel and boot parameters, applying sysctl tweaks, disabling unnecessary services, using MAC frameworks, sandboxing applications, hardening memory allocation, and following best‑practice system administration steps.

$rootKernelLinux
0 likes · 59 min read
Ultimate Guide to Hardening Linux: Boost Security & Privacy
Laravel Tech Community
Laravel Tech Community
May 10, 2021 · Backend Development

Using hash_file() to Generate a File Hash in PHP

This article explains PHP's hash_file() function, its parameters, return values, security use cases, and provides a complete example demonstrating how to compute an MD5 hash of a file, including code snippets and expected output.

File HashingPHPhash_file
0 likes · 3 min read
Using hash_file() to Generate a File Hash in PHP
21CTO
21CTO
May 10, 2021 · Operations

What’s Driving the Latest Tech News? From Quantum Computers to Linux LTS Extensions

A tech roundup reveals a former actor turned PhD, exposes a massive Amazon paid‑review fraud, extends Linux 5.10 LTS support to 2026, details Edge’s false Firefox block, showcases Google’s new Chrome media controls, and announces China’s 62‑qubit programmable quantum prototype.

ChromeLinuxbrowser security
0 likes · 7 min read
What’s Driving the Latest Tech News? From Quantum Computers to Linux LTS Extensions
Laravel Tech Community
Laravel Tech Community
May 7, 2021 · Information Security

hash_algos() – Returns List of Registered Hash Algorithms in PHP

The PHP function hash_algos() returns an indexed array of all supported hash algorithm names, allowing developers to retrieve the available algorithms for cryptographic operations; the documentation includes its signature, return description, a usage example, and a sample output listing algorithms such as md5, sha1, and crc32.

hashsecurity
0 likes · 2 min read
hash_algos() – Returns List of Registered Hash Algorithms in PHP
IT Architects Alliance
IT Architects Alliance
May 5, 2021 · Information Security

Token-Based Identity Authentication: Scenarios, Types, and Hierarchical Design

This article analyzes various client scenarios in multi‑client systems, classifies authentication tokens into password, session, and interface categories, compares their natural and controllable attributes, and proposes a layered token hierarchy to improve security, privacy, and usability across web, mobile, and API platforms.

Access ControlAuthenticationToken
0 likes · 9 min read
Token-Based Identity Authentication: Scenarios, Types, and Hierarchical Design
Spring Full-Stack Practical Cases
Spring Full-Stack Practical Cases
May 5, 2021 · Backend Development

How to Build a Spring OAuth2 Authorization Server with Redis Token Store

This tutorial walks through setting up a Spring Boot 2.2.11 OAuth2 authorization server that stores tokens in Redis, covering Maven dependencies, YAML configuration, JPA entities, DAO interfaces, core server configuration, custom client details, authentication provider, password encoder, and detailed testing of all OAuth2 grant types.

OAuth2Spring Bootauthorization-server
0 likes · 16 min read
How to Build a Spring OAuth2 Authorization Server with Redis Token Store
Laravel Tech Community
Laravel Tech Community
Apr 29, 2021 · Backend Development

Understanding PHP Weak Typing Pitfalls and Secure Comparison Practices

The article explains how PHP's weak typing can lead to security vulnerabilities through loose comparisons, demonstrates dangerous examples such as hash, bool, numeric, switch, and array comparisons, and provides safer alternatives using strict operators, hash_equals, input validation, and proper type checks.

comparisonsecurityweak typing
0 likes · 10 min read
Understanding PHP Weak Typing Pitfalls and Secure Comparison Practices
MaGe Linux Operations
MaGe Linux Operations
Apr 29, 2021 · Operations

Essential Kubernetes Production Best Practices for Reliable Ops

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.

Kubernetesmonitoringoperations
0 likes · 12 min read
Essential Kubernetes Production Best Practices for Reliable Ops
php Courses
php Courses
Apr 26, 2021 · Databases

Using PDO::quote to Safely Quote Strings in PHP

This article explains how to use PHP's PDO::quote function to safely add quotes to strings for SQL statements, describes its syntax and parameters, and provides two practical code examples demonstrating quoting of normal and potentially dangerous strings.

PDOquotesecurity
0 likes · 3 min read
Using PDO::quote to Safely Quote Strings in PHP
58 Tech
58 Tech
Apr 23, 2021 · Information Security

Understanding AST, SAST, Taint Analysis, and CodeQL for Java Security Scanning

This article explains the fundamentals of abstract syntax trees, Java AST analysis with Spoon, the principles of static application security testing and taint analysis, and demonstrates how to use CodeQL to detect unsafe Fastjson usage and Spring web path bindings in a CI/CD pipeline.

ASTCodeQLJava
0 likes · 24 min read
Understanding AST, SAST, Taint Analysis, and CodeQL for Java Security Scanning
UCloud Tech
UCloud Tech
Apr 22, 2021 · Cloud Computing

How Hybrid Cloud Architecture Extends Compute, Storage, and Security

This article explains why many enterprises still rely on on‑premise data centers, introduces three hybrid‑cloud deployment models, and provides detailed solutions for extending computing power, storage backup, security protection, new product capabilities, and smooth business migration using a hybrid cloud approach.

Cloud ComputingInfrastructureUCloud
0 likes · 19 min read
How Hybrid Cloud Architecture Extends Compute, Storage, and Security
Huawei Cloud Developer Alliance
Huawei Cloud Developer Alliance
Apr 22, 2021 · Backend Development

Prevent Log Injection in Log4j2: Clean Input, PatternLayout, and Custom Throwable Converter

This article explains how malicious newline characters in logged usernames can cause log injection, demonstrates a simple input‑sanitizing method, shows how to use Log4j2's %enc{%m}{CRLF} pattern and a custom ThrowablePatternConverter to ensure all log messages and exception stacks remain on a single safe line.

exception handlinglog injectionlog4j2
0 likes · 8 min read
Prevent Log Injection in Log4j2: Clean Input, PatternLayout, and Custom Throwable Converter
Liangxu Linux
Liangxu Linux
Apr 21, 2021 · Information Security

Essential Linux Incident‑Response Commands for Quick Threat Detection

This guide walks through common Linux emergency scenarios—such as mining malware, ransomware, and backdoors—detailing a step‑by‑step workflow and providing essential command‑line tools for process, user, network, and file investigation on CentOS 6 and Windows Server 2008 systems.

Linuxforensicsincident response
0 likes · 11 min read
Essential Linux Incident‑Response Commands for Quick Threat Detection
Tencent Cloud Developer
Tencent Cloud Developer
Apr 20, 2021 · Databases

Advanced Guide to Redis: Data Structures, Usage, Internals, Performance Issues, and Security

This comprehensive Redis guide explains core data structures like strings, lists, sets, hashes and sorted sets, explores advanced features such as Bloom filters, distributed locks and clustering, details internal mechanisms, performance bottlenecks, and provides essential security best practices for safe, high‑performance deployment.

Data Structuresperformancesecurity
0 likes · 13 min read
Advanced Guide to Redis: Data Structures, Usage, Internals, Performance Issues, and Security
Top Architect
Top Architect
Apr 20, 2021 · Information Security

Integrating JWT Authentication in Spring Boot

This article explains the fundamentals of JSON Web Tokens (JWT), their structure, main use cases, and provides a step‑by‑step guide for integrating JWT authentication into a Spring Boot application, including dependency setup, custom annotations, token generation, interceptor implementation, and configuration details.

AuthenticationJWTJava
0 likes · 16 min read
Integrating JWT Authentication in Spring Boot
58 Tech
58 Tech
Apr 19, 2021 · Information Security

Java White-Box Static Code Analysis: Overview, Tool Evaluation, and Selection

This article introduces the importance of source code security scanning in CI/CD pipelines, explains static application security testing (SAST), compares major commercial and open-source Java analysis tools, and presents the selection criteria and conclusions that guided 58 Group's Java white-box scanning solution.

JavaSASTsecurity
0 likes · 16 min read
Java White-Box Static Code Analysis: Overview, Tool Evaluation, and Selection
ITPUB
ITPUB
Apr 13, 2021 · Information Security

How Hackers Hijack GitHub Actions to Run Free Crypto Mining

Amid soaring cryptocurrency prices, hackers exploit GitHub Actions by submitting malicious pull requests that run hidden XMRig mining code on GitHub’s free CI servers, a technique detailed through a French developer’s investigation, code analysis, attack scale, and mitigation advice.

CI/CDGitHub ActionsMalware
0 likes · 11 min read
How Hackers Hijack GitHub Actions to Run Free Crypto Mining
AntTech
AntTech
Apr 9, 2021 · Information Security

Next‑Generation Intel SGX on Ice Lake: Performance Evaluation and Optimization with Occlum

This article reviews the Ice Lake‑based next‑generation Intel SGX, compares its security and performance improvements over previous generations, presents detailed benchmark results on memory access, dynamic memory management and enclave switching, and describes software optimizations implemented in the Occlum runtime to mitigate remaining overheads.

Ice LakeIntel SGXNext‑Gen Occlum
0 likes · 8 min read
Next‑Generation Intel SGX on Ice Lake: Performance Evaluation and Optimization with Occlum
Architects' Tech Alliance
Architects' Tech Alliance
Apr 5, 2021 · Fundamentals

Arm Announces Armv9 Architecture: New Security, AI, and Vector Extensions

Arm's Vision Day unveiled the Armv9 architecture, highlighting three core pillars—enhanced security with Confidential Compute Architecture, AI acceleration, and advanced vector/DSP capabilities via SVE2—while outlining the roadmap, performance gains, and future CPU and GPU developments for the next decade.

Armv9Artificial IntelligenceSVE2
0 likes · 12 min read
Arm Announces Armv9 Architecture: New Security, AI, and Vector Extensions
Laravel Tech Community
Laravel Tech Community
Apr 5, 2021 · Fundamentals

Python 3.9.3 and 3.8.9 Release Notes: Security Fixes and Improvements

Python 3.9.3 and 3.8.9 were released early with multiple security patches, OpenSSL CVE fixes, module hardening, FTP PASV safety, audit hooks, Unicode handling improvements, and various bug fixes for syntax errors, import cycles, recursion limits, SSL context, and SMTP authentication.

Programming LanguagePythonbug fix
0 likes · 4 min read
Python 3.9.3 and 3.8.9 Release Notes: Security Fixes and Improvements
DevOps Cloud Academy
DevOps Cloud Academy
Apr 5, 2021 · Information Security

7 Best Practices for Microservice Security

Microservice architectures increase deployment flexibility but also expand the attack surface, so this article outlines seven essential security best practices—including using an API gateway, layered defenses, DevSecOps, trusted encryption libraries, service-level protection, multi-factor authentication, and dependency vulnerability scanning—to safeguard microservice-based applications.

API GatewayDependency ScanningDevSecOps
0 likes · 6 min read
7 Best Practices for Microservice Security
Spring Full-Stack Practical Cases
Spring Full-Stack Practical Cases
Apr 4, 2021 · Information Security

Mastering CSRF Protection in Spring Boot: From Theory to Code

This guide explains what CSRF attacks are, outlines common defense strategies such as captchas, referer checks, and token validation, and provides a complete Spring Boot implementation—including custom annotations, token storage with Guava or Redis, an interceptor, configuration, and a token‑generation endpoint—complete with testing steps.

CSRFInterceptorSpring Boot
0 likes · 8 min read
Mastering CSRF Protection in Spring Boot: From Theory to Code
NetEase Smart Enterprise Tech+
NetEase Smart Enterprise Tech+
Mar 9, 2021 · Information Security

How Server‑Side Device Fingerprinting Boosts Security and Stability

Device fingerprinting uniquely identifies devices using collected data; this article explains how uniqueness and stability are measured, shows probability‑based calculations for single and combined fields, discusses the shortcomings of client‑side methods, and details a server‑side multi‑algorithm approach that improves security and stability.

Server-Sideanti-frauddecision-tree
0 likes · 11 min read
How Server‑Side Device Fingerprinting Boosts Security and Stability
System Architect Go
System Architect Go
Mar 8, 2021 · Information Security

Insecure Deserialization

This article explains what insecure deserialization is, why it leads to high‑severity attacks, demonstrates typical PHP, Ruby, and Java examples, and provides practical techniques for identifying, exploiting, and mitigating unsafe deserialization vulnerabilities.

JavaPHPdeserialization
0 likes · 27 min read
Insecure Deserialization
Architect's Tech Stack
Architect's Tech Stack
Mar 6, 2021 · Information Security

Spring nohttp Project: Scanning and Blocking Insecure HTTP URLs

The Spring nohttp project is an open‑source tool that scans and replaces insecure http:// URLs with HTTPS, preventing man‑in‑the‑middle attacks, updating Maven and documentation links, offering multiple modules and a command‑line interface, and providing example XML configuration for secure classpath resolution.

HTTPSMavenSpring
0 likes · 4 min read
Spring nohttp Project: Scanning and Blocking Insecure HTTP URLs
21CTO
21CTO
Mar 5, 2021 · Information Security

Essential Linux Security Hardening: Account, Service, and Rootkit Defense

This guide walks operations engineers through comprehensive Linux hardening techniques—including account and login protection, unnecessary service removal, password and key authentication policies, proper use of sudo, system welcome message sanitization, file‑system safeguards, and practical rootkit detection with chkrootkit and RKHunter—plus a step‑by‑step response plan for compromised servers.

LinuxRootkitSSH
0 likes · 26 min read
Essential Linux Security Hardening: Account, Service, and Rootkit Defense
Suning Technology
Suning Technology
Mar 3, 2021 · Big Data

How Can China Build a Secure, Free Data Sharing Ecosystem?

The article examines China's push for free public data sharing, highlighting policy directives, the need for top‑level design, security standards, and education to create a unified, safe data‑governance framework that fuels the digital economy.

big datadata governancedata sharing
0 likes · 6 min read
How Can China Build a Secure, Free Data Sharing Ecosystem?
macrozheng
macrozheng
Mar 1, 2021 · Information Security

Build an OAuth2 Authorization Server with Spring Authorization Server 0.1.0

This guide walks you through setting up Spring Authorization Server 0.1.0 on Spring Boot 2.4.2, covering Maven dependencies, bean configurations, token customization, and testing with curl commands for authorization code flow, token issuance, refresh, and revocation.

Springauthorization-serversecurity
0 likes · 7 min read
Build an OAuth2 Authorization Server with Spring Authorization Server 0.1.0
Liangxu Linux
Liangxu Linux
Feb 28, 2021 · Cloud Native

Essential Kubernetes Best Practices for Production‑Ready Clusters

This guide presents a comprehensive checklist of Kubernetes best practices covering container image selection, registry authentication, namespace isolation, labeling, annotations, RBAC, pod security policies, network policies, secrets management, image scanning, CI/CD, canary releases, monitoring, service mesh, and admission controllers to help you build secure, stable, and scalable production clusters.

Kubernetescloud nativecluster-management
0 likes · 17 min read
Essential Kubernetes Best Practices for Production‑Ready Clusters
21CTO
21CTO
Feb 23, 2021 · Artificial Intelligence

What’s Shaping Tech Today? From Huawei Trademarks to Monkey Face Recognition

This roundup covers Huawei’s new "Hongmeng" trademark filing, Ma Huateng’s advice on focusing on services over features, a death‑threat email sent to curl’s creator, Richard Brodie’s nostalgia for classic Word, state‑owned enterprise reforms in China, a survey on tech workers’ actual hours, and a Chinese AI team’s breakthrough in monkey‑face recognition.

AIChinaresearch
0 likes · 8 min read
What’s Shaping Tech Today? From Huawei Trademarks to Monkey Face Recognition
Alibaba Cloud Native
Alibaba Cloud Native
Feb 20, 2021 · Cloud Native

How to Prevent Cascading Deletions and Keep Cloud‑Native Apps Stable with OpenKruise

This article explains the inherent security risks of cloud‑native Kubernetes deployments—such as workload, namespace, and CRD cascading deletions and concurrent pod updates—and presents practical OpenKruise‑based protection techniques like label‑driven cascade‑deletion blocking, pod‑deletion flow control, and automatic PUB/PDB generation to ensure runtime stability.

KubernetesOpenKruisePodUnavailableBudget
0 likes · 21 min read
How to Prevent Cascading Deletions and Keep Cloud‑Native Apps Stable with OpenKruise
Java Architect Essentials
Java Architect Essentials
Feb 18, 2021 · Information Security

How Behavior‑Based Captchas Boost Security and User Experience

This article introduces a behavior‑based captcha solution that replaces traditional text captchas with slide‑puzzle and click‑word challenges, explains its terminology, interaction flow, project directory layout, and provides online demo links for both web and mobile implementations.

BackendSpring Bootbehavior captcha
0 likes · 5 min read
How Behavior‑Based Captchas Boost Security and User Experience
Java Architecture Diary
Java Architecture Diary
Feb 17, 2021 · Information Security

Build a Spring Authorization Server with OAuth2: Step‑by‑Step Guide

This tutorial walks through setting up Spring Authorization Server on Spring Boot 2.4.2, covering Maven dependencies, custom bean configuration, token generation, testing with curl commands, and token customization options, providing a complete example for OAuth2 authorization implementation.

JavaSpring Bootauthorization-server
0 likes · 6 min read
Build a Spring Authorization Server with OAuth2: Step‑by‑Step Guide
Top Architect
Top Architect
Feb 13, 2021 · Information Security

Weekly Tech News Digest: Privacy, Security, Cloud, and Development Updates

This week’s roundup covers the Shenzhen court ruling that WeChat friend lists are not personal privacy, Microsoft’s removal of legacy Edge, the formation of the Rust Foundation, a novel supply‑chain attack on 35 tech firms, Linux floppy driver updates, Go generics progress, and other notable industry developments.

Rustclouddevelopment
0 likes · 13 min read
Weekly Tech News Digest: Privacy, Security, Cloud, and Development Updates
Liangxu Linux
Liangxu Linux
Feb 9, 2021 · Information Security

Understanding DNS: From Hostnames to Secure Queries and Packet Anatomy

This article provides a comprehensive overview of the Domain Name System, explaining how hostnames map to IP addresses, the hierarchical distributed design of DNS servers, query processes, caching mechanisms, packet structures, common attack vectors, and defensive measures such as DNSSEC.

DNSDomain Name SystemNetworking
0 likes · 25 min read
Understanding DNS: From Hostnames to Secure Queries and Packet Anatomy
php Courses
php Courses
Feb 7, 2021 · Backend Development

Configuring IP Access Restrictions for Modules in ThinkPHP

This guide explains how to configure module IP access restrictions in ThinkPHP by adding 'allow_module_ip' and 'deny_module_list' entries to config.php, shows the recommended placement, and demonstrates the necessary modifications to the framework's App.php file to enforce the rules.

BackendIP restrictionPHP
0 likes · 3 min read
Configuring IP Access Restrictions for Modules in ThinkPHP
Liangxu Linux
Liangxu Linux
Feb 4, 2021 · Fundamentals

66 Essential Computer Network Concepts Every Developer Should Know

This comprehensive guide covers 66 key computer networking topics, from the evolution of HTTP protocols and request methods to TCP/IP fundamentals, TLS/HTTPS security, web performance optimization, caching strategies, cookies, tokens, and common interview questions, providing clear explanations, diagrams, and practical examples for developers.

CachingHTTPTCP/IP
0 likes · 66 min read
66 Essential Computer Network Concepts Every Developer Should Know
php Courses
php Courses
Feb 4, 2021 · Information Security

Analyzing and Decoding CAPTCHA Images Using PHP

This article explains how to extract RGB values from a CAPTCHA image with PHP, convert the pixel data into binary patterns, map those patterns to digits using a predefined dictionary, and achieve 100% recognition accuracy, illustrating a practical backend security technique.

BackendOCRPHP
0 likes · 4 min read
Analyzing and Decoding CAPTCHA Images Using PHP
Sensors Frontend
Sensors Frontend
Feb 1, 2021 · Frontend Development

2021 Software Development Trends & Essential Frontend Guides

This article compiles the most influential 2021 software development trends—from cloud, edge, containers, AI, blockchain, and more—alongside curated deep-dive resources covering frontend innovations such as smart code generation, TypeScript declarations, authentication mechanisms, node_modules challenges, React best practices, security protocols, and operational resilience.

2021 Trendsfrontendsecurity
0 likes · 10 min read
2021 Software Development Trends & Essential Frontend Guides
Open Source Linux
Open Source Linux
Jan 29, 2021 · Operations

Essential Kubernetes Production Best Practices for Secure, Scalable Ops

This article outlines comprehensive production‑grade Kubernetes best practices—including health probes, RBAC, resource management, network policies, monitoring, autoscaling, image security, and zero‑downtime strategies—to help teams run secure, efficient, and highly available workloads.

AutoscalingKubernetesmonitoring
0 likes · 11 min read
Essential Kubernetes Production Best Practices for Secure, Scalable Ops
Top Architect
Top Architect
Jan 26, 2021 · Fundamentals

Key Software Architecture Characteristics and Techniques to Improve Them

This article explains the most important non‑functional characteristics of software architecture—such as performance, reliability, availability, resilience, scalability, security, and many others—and provides practical techniques and best‑practice recommendations for enhancing each of these qualities in modern systems.

non-functional requirementsscalabilitysecurity
0 likes · 18 min read
Key Software Architecture Characteristics and Techniques to Improve Them
Continuous Delivery 2.0
Continuous Delivery 2.0
Jan 25, 2021 · Fundamentals

The Risks and Best Practices of Software Dependency Management

This article examines how modern software development relies heavily on external dependencies, outlines the hidden risks they introduce, and provides a comprehensive set of guidelines—including design review, code quality checks, testing, licensing, and isolation techniques—to help teams evaluate, monitor, and safely manage third‑party packages.

dependency managementsecuritysoftware risk
0 likes · 25 min read
The Risks and Best Practices of Software Dependency Management
Open Source Linux
Open Source Linux
Jan 25, 2021 · Information Security

How to Detect and Recover from Linux Server Intrusions: Essential Commands and Techniques

This guide walks Linux operations engineers through common signs of a compromised host—such as missing logs, altered password files, unexpected login events, and deleted critical files—and provides concrete command‑line techniques for detection, investigation, and recovery using tools like ll, du, lastlog, who, lsof, and tcpdump.

Linuxfile recoveryintrusion-detection
0 likes · 14 min read
How to Detect and Recover from Linux Server Intrusions: Essential Commands and Techniques
Top Architect
Top Architect
Jan 23, 2021 · Information Security

Weekly Tech News Digest: Flash Outage, QQ Browser History Scan, Apple’s WeChat Compatibility Code, Elastic License Shift, AWS Fork, GitHub Alternative, RHEL Free for Small Businesses, Windows 10 Crash Bug, IntelliJ IDEA 20th Anniversary, VS Native WSL2 Support, Brave IPFS Integration, Chromium Package Removal, GDPR Fine, US Intel‑Huawei Supply Cut, Tencent’s Response

This weekly roundup covers a Flash‑related railway incident, QQ’s browser‑history scanning, Apple’s WeChat‑compatible code, Elastic’s move to SSPL, AWS’s Elasticsearch fork, China’s GitHub alternative, RHEL’s free small‑business offer, a Windows 10 crash bug, IntelliJ IDEA’s 20‑year milestone, Visual Studio’s native WSL2 support, Brave’s IPFS support, Linux distributions dropping Chromium, a GDPR fine in Germany, the US revoking Intel‑Huawei supply licences, and Tencent’s defence of its data‑collection practice.

NewsSoftwareTechnology
0 likes · 11 min read
Weekly Tech News Digest: Flash Outage, QQ Browser History Scan, Apple’s WeChat Compatibility Code, Elastic License Shift, AWS Fork, GitHub Alternative, RHEL Free for Small Businesses, Windows 10 Crash Bug, IntelliJ IDEA 20th Anniversary, VS Native WSL2 Support, Brave IPFS Integration, Chromium Package Removal, GDPR Fine, US Intel‑Huawei Supply Cut, Tencent’s Response
Open Source Tech Hub
Open Source Tech Hub
Jan 22, 2021 · Information Security

How to Secure SSH Access with Certificate‑Based Authentication

This guide explains how to set up SSH certificate‑based authentication by creating a Certificate Authority, generating user and host keys, signing certificates, configuring both server and client to trust them, and managing revocation, offering a more secure alternative to password or key‑pair logins.

CACertificate AuthenticationLinux
0 likes · 13 min read
How to Secure SSH Access with Certificate‑Based Authentication
Aikesheng Open Source Community
Aikesheng Open Source Community
Jan 19, 2021 · Databases

MySQL 8.0.23 New Features Overview

The article reviews MySQL 8.0.23's maintenance release, detailing new features such as invisible columns, query attributes, security enhancements, InnoDB auto‑extend size, replication terminology changes, X protocol improvements, and various deprecations, providing code examples and links to official documentation.

8.0.23InnoDBInvisible Columns
0 likes · 10 min read
MySQL 8.0.23 New Features Overview
Liangxu Linux
Liangxu Linux
Jan 16, 2021 · Information Security

Essential Linux Security Hardening Checklist for System Administrators

This guide provides system administrators with a step‑by‑step checklist to audit and harden Linux operating systems, covering account management, password policies, service restrictions, filesystem permissions, logging configuration, and practical command examples for comprehensive security compliance.

LinuxShellcompliance
0 likes · 9 min read
Essential Linux Security Hardening Checklist for System Administrators
Code Ape Tech Column
Code Ape Tech Column
Jan 14, 2021 · Information Security

Implementing API Signature for Secure Backend Communication

This article explains how to protect front‑end/back‑end separated interfaces by designing an API signature scheme that includes appId, appSecret, timestamp, nonce and signature, detailing the generation process, request validation, anti‑replay measures and implementation using a custom filter in Java.

APIBackendJava
0 likes · 6 min read
Implementing API Signature for Secure Backend Communication
Top Architect
Top Architect
Jan 3, 2021 · Information Security

Top 7 Static Code Analysis Tools: Features, Languages, and Pricing

This article reviews seven popular static code analysis tools, outlining why static analysis matters, each tool's key features, drawbacks, supported languages, and pricing to help developers choose the right solution for improving code quality and security.

DevOpsSASTSoftware tools
0 likes · 11 min read
Top 7 Static Code Analysis Tools: Features, Languages, and Pricing
Architects Research Society
Architects Research Society
Dec 30, 2020 · Fundamentals

Key Challenges in Designing Distributed Systems

Designing a distributed system involves overcoming major challenges such as heterogeneity, transparency, openness, concurrency, security, scalability, and fault tolerance, each requiring careful consideration of hardware, software, network, and management aspects to build robust, scalable, and secure architectures.

distributed systemsfault tolerancescalability
0 likes · 9 min read
Key Challenges in Designing Distributed Systems
Open Source Linux
Open Source Linux
Dec 29, 2020 · Fundamentals

Mastering TCP: Handshakes, Flow & Congestion Control, Fast Open and More

This comprehensive guide explains TCP vs UDP, the three‑way handshake, four‑way termination, half‑open queues, SYN‑Flood attacks, header fields, timestamps, Fast Open, retransmission timeout calculations, flow control, congestion control, Nagle’s algorithm, delayed ACKs and keep‑alive mechanisms, providing essential knowledge for networking interviews and system design.

Flow ControlTCPcongestion control
0 likes · 35 min read
Mastering TCP: Handshakes, Flow & Congestion Control, Fast Open and More
Open Source Linux
Open Source Linux
Dec 28, 2020 · Information Security

Effective Linux System Auditing: Methods, Filters & Best Practices

Auditing Linux system operations is essential for security and troubleshooting, but excessive logs can overwhelm analysis; this guide outlines common filtering rules and compares five recording methods—history, custom bash, snoopy, auditd, and eBPF—highlighting their advantages, limitations, and practical configuration examples.

LinuxauditdeBPF
0 likes · 13 min read
Effective Linux System Auditing: Methods, Filters & Best Practices