Tagged articles

825 articles

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Oct 18, 2019 · Frontend Development

Introduction to WebAssembly and Its Application in Live Streaming Transcoding

WebAssembly enables high‑performance, ahead‑of‑time compiled code to run in browsers, and iQIYI leverages it by writing a C‑based FLV‑to‑MP4 transcoder compiled to Wasm, executed in a Web Worker, which boosts live‑stream conversion speed, reduces CPU usage, and opens doors for further web‑based media processing.

CJavaScriptWebAssembly

0 likes · 11 min read

Introduction to WebAssembly and Its Application in Live Streaming Transcoding

21CTO

Oct 9, 2019 · Fundamentals

Mastering OOP in C: Implement the State Pattern with Real Code

This article walks you through applying object‑oriented concepts in C by implementing the State design pattern, covering class simulation with structs, inheritance via macros, lifecycle management, polymorphism, and a complete client example that demonstrates state transitions for a water model.

CDesign PatternsPolymorphism

0 likes · 13 min read

Mastering OOP in C: Implement the State Pattern with Real Code

Python Programming Learning Circle

Sep 25, 2019 · Fundamentals

Why My Student Project’s Code Is a Nightmare—and How to Fix It

A graduate student recounts the chaotic state of his research team's C# data‑mining project, highlighting poor naming conventions, oversized classes, overuse of singletons, redundant code, lack of proper inheritance, and other anti‑patterns, while offering concrete suggestions such as using meaningful identifiers, applying the single‑responsibility principle, leveraging LINQ, and adopting MVVM for cleaner, more maintainable code.

Best PracticesCDesign Patterns

0 likes · 8 min read

Why My Student Project’s Code Is a Nightmare—and How to Fix It

Programmer DD

Sep 22, 2019 · Fundamentals

Why Adding Zero Can Slow Down Your C++ Loop 7×: The Hidden Cost of Denormal Floats

An intriguing experiment shows that replacing a harmless "y += 0" with "y += 0.1f" makes a tight C++ loop run seven times faster, revealing how denormalized floating‑point numbers trigger costly CPU paths and how understanding IEEE‑754 representation can restore performance.

CCPUOptimization

0 likes · 10 min read

Why Adding Zero Can Slow Down Your C++ Loop 7×: The Hidden Cost of Denormal Floats

360 Quality & Efficiency

Sep 10, 2019 · Fundamentals

Practical Guide to C++ Code Coverage Testing with gcov and lcov

This article provides a step‑by‑step tutorial on performing C++ code‑coverage testing using gcov, covering compilation flags, running the instrumented program, generating gcov reports, and creating detailed HTML reports with lcov, including command examples and configuration details.

Ccode coveragegcov

0 likes · 7 min read

Practical Guide to C++ Code Coverage Testing with gcov and lcov

Seewo Tech Circle

Sep 3, 2019 · Fundamentals

Why C# Char '\x1d11e' Is Invalid and How Code Pages Influence Encoding

This article explains why a C# char literal like '\x1d11e' is illegal, how Unicode code points map to glyphs, the role of code pages on Windows and Linux, and practical tips to avoid encoding mishaps across different programming languages.

CC++Java

0 likes · 8 min read

$Why C# Char '\x1d11e' Is Invalid and How Code Pages Influence Encoding$

360 Quality & Efficiency

Aug 28, 2019 · Fundamentals

Introduction to gcov: C/C++ Code Coverage Tool and Instrumentation Process

This article explains gcov, the GCC‑bundled C/C++ code coverage tool, covering its basic concepts, the workflow for generating coverage data, and the instrumentation technique using basic blocks and arcs to record execution counts.

CInstrumentationbasic blocks

0 likes · 4 min read

Introduction to gcov: C/C++ Code Coverage Tool and Instrumentation Process

Meitu Technology

Aug 9, 2019 · Databases

Redis 6 Multithreaded I/O Implementation and Performance Evaluation

The article details Redis 6’s new multithreaded I/O feature—motivated by network‑I/O bottlenecks, implemented with lock‑free pending‑read queues that offload reads, writes, and protocol parsing to worker threads while keeping command execution single‑threaded—and demonstrates through a simple benchmark that using four I/O threads roughly doubles GET/SET throughput compared with Redis 5.

BenchmarkCDatabase

0 likes · 11 min read

Redis 6 Multithreaded I/O Implementation and Performance Evaluation

360 Tech Engineering

Jul 25, 2019 · Backend Development

Building a Simple C++ TCP Server from Scratch with cppbox

This article explains why the author created a custom C++ TCP server framework, outlines the required prerequisites and coding standards, and walks through a minimal echo server implementation together with the key cppbox library interfaces and usage examples.

CServerSocket

0 likes · 8 min read

Building a Simple C++ TCP Server from Scratch with cppbox

Java Captain

Jul 11, 2019 · Information Security

Memory Editing and Cheat Development for PC Games: Techniques, Tools, and Sample Code

This article explains how to locate and modify in‑memory game data, write simple Windows‑API cheat programs, automate gameplay actions, and intercept network traffic for popular PC games, providing step‑by‑step examples and full source code for each technique.

CReverse Engineeringcheat development

0 likes · 14 min read

Memory Editing and Cheat Development for PC Games: Techniques, Tools, and Sample Code

Tencent Database Technology

Jul 10, 2019 · Databases

MySQL 8.0 Iterator Executor: Design, Implementation, and Future Outlook

The article explains MySQL 8.0’s new iterator‑based executor, detailing the underlying iterator model, its advantages over the legacy executor, the specific RowIterator classes introduced, supported query features, and future enhancements for more advanced algebraic operations.

CDatabaseExecutor

0 likes · 12 min read

MySQL 8.0 Iterator Executor: Design, Implementation, and Future Outlook

Xueersi Online School Tech Team

Jun 28, 2019 · Fundamentals

Bitwise Optimization Techniques for Counting Set Bits in 32‑Bit Integers

The article explores how bitwise operations can dramatically speed up counting the number of set bits in a 32‑bit integer, presenting a naive O(n) solution and four successive optimizations that reduce runtime from about two seconds to under a tenth of a second, while sharing practical low‑level coding tricks.

Cbitwiselow-level

0 likes · 10 min read

Bitwise Optimization Techniques for Counting Set Bits in 32‑Bit Integers

MaGe Linux Operations

Jun 7, 2019 · Fundamentals

Mastering Linux Shared Memory: IPC Basics, APIs, and Sample Code

This article explains the principles of Linux shared memory interprocess communication, details the shmid_ds structure and system limits, walks through creation, control, attachment, detachment APIs, and provides a complete C example demonstrating parent‑child data sharing via shmget, shmat, shmdt, and shmctl.

CIPCInterprocess Communication

0 likes · 6 min read

Mastering Linux Shared Memory: IPC Basics, APIs, and Sample Code

58 Tech

Jun 6, 2019 · Mobile Development

Design and Architecture of the 58 IM SDK for Multi‑Platform Mobile Applications

The article details the background, design goals, layered architecture, message flow, UI customization mechanisms, and key class structures of the 58 Group's cross‑platform IM SDK, illustrating how it supports iOS, Android, Web, and H5 with extensible C++ and UIKit components.

AndroidCUI customization

0 likes · 12 min read

Design and Architecture of the 58 IM SDK for Multi‑Platform Mobile Applications

Wukong Talks Architecture

Apr 30, 2019 · Fundamentals

C# Multithreading Journey (4): Introduction to the Asynchronous Programming Model (APM)

This article introduces the Asynchronous Programming Model (APM) in C#, demonstrating how to use delegates and BeginInvoke/EndInvoke to run time‑consuming operations concurrently, includes sample code, explains delegate generation, and discusses practical considerations such as IAsyncResult handling and callback execution.

APMAsynchronousC

0 likes · 8 min read

C# Multithreading Journey (4): Introduction to the Asynchronous Programming Model (APM)

Wukong Talks Architecture

Apr 28, 2019 · Fundamentals

C# Multithreading Journey (3) – Using the Thread Pool

This article explains how C# thread pools reduce thread‑creation overhead, describes several ways to enqueue work (Task Parallel Library, ThreadPool.QueueUserWorkItem, asynchronous delegates, BackgroundWorker), provides practical code examples, and outlines important considerations such as thread naming, priority, and exception handling.

CTask Parallel LibraryThreadPool

0 likes · 9 min read

C# Multithreading Journey (3) – Using the Thread Pool

dbaplus Community

Apr 27, 2019 · Backend Development

Excel Tricks: Build SQL Queries, C# Lists, Detect Duplicates, Split Cells, Remove Hyperlinks

Developers can boost efficiency by using Excel to concatenate column values into SQL IN clauses or C# List syntax, locate duplicate entries, split cell contents by delimiters, and permanently disable automatic hyperlink creation, with step‑by‑step visual guides illustrating each technique.

AutomationCData cleaning

0 likes · 7 min read

Excel Tricks: Build SQL Queries, C# Lists, Detect Duplicates, Split Cells, Remove Hyperlinks

Wukong Talks Architecture

Apr 27, 2019 · Fundamentals

C# Multithreading Journey (2) – Creating and Starting Threads

This article explains how to create and start threads in C#, covering ThreadStart delegates, lambda expressions, passing parameters, naming threads, foreground/background distinctions, thread priority, and exception handling, with clear code examples and best‑practice recommendations.

CException HandlingLambda

0 likes · 13 min read

C# Multithreading Journey (2) – Creating and Starting Threads

Wukong Talks Architecture

Apr 27, 2019 · Fundamentals

C# Multithreading Basics: Introduction, Join, Sleep, and Thread Safety

This article introduces C# multithreading concepts, covering thread creation, memory isolation, data sharing, thread safety with locks, and the use of Join and Sleep methods, while providing clear code examples and explanations of how threads are scheduled and interact with the CPU.

CJoinThread

0 likes · 12 min read

C# Multithreading Basics: Introduction, Join, Sleep, and Thread Safety

Wukong Talks Architecture

Apr 26, 2019 · Fundamentals

C# Multithreading Basics: Introduction, Join, Sleep, and Thread Safety

This article introduces C# multithreading concepts, demonstrates thread creation, memory isolation, data sharing, thread safety with locks, and explains the use of Join and Sleep methods, providing practical code examples and best‑practice guidance for concurrent programming.

CConcurrencyJoin

0 likes · 10 min read

Tencent Music Tech Team

Apr 19, 2019 · Mobile Development

Common Wrapper Classes for Android BufferQueue: Surface and SurfaceTexture

The article explains BufferQueue’s internal design and shows how Android developers typically use its wrapper classes—Surface as the producer and SurfaceTexture as the consumer—detailing their constructors, dequeue/queue workflows, lock/unlock mechanisms, and a complete SurfaceView example that illustrates buffer production and consumption by SurfaceFlinger.

AndroidBufferQueueC

0 likes · 13 min read

Common Wrapper Classes for Android BufferQueue: Surface and SurfaceTexture

Python Crawling & Data Mining

Mar 28, 2019 · Mobile Development

Top 5 Mobile Apps to Code on Your Phone: C/C++, Java, Python & More

This guide introduces five Android apps that let you write, compile, and run C/C++, Java, Python, front‑end web, and Linux code on a smartphone, with installation steps, key features, and screenshots to help beginners start mobile programming quickly.

CFrontendJava

0 likes · 7 min read

Top 5 Mobile Apps to Code on Your Phone: C/C++, Java, Python & More

Java Captain

Mar 22, 2019 · Fundamentals

Understanding Recursion: Three Essential Elements and Practical Code Examples

This article introduces recursion by outlining its three essential elements—function purpose, base case, and recurrence relation—and demonstrates each step with clear Java/C examples such as factorial, Fibonacci, frog‑jump, and linked‑list reversal, while also covering common pitfalls and optimization techniques.

CData StructuresRecursion

0 likes · 15 min read

Understanding Recursion: Three Essential Elements and Practical Code Examples

21CTO

Mar 14, 2019 · Blockchain

Essential Guide to Blockchain Programming: Top Languages, Platforms, and Use Cases

This article explores blockchain programming fundamentals, compares public and permissioned chains, reviews major development platforms, and evaluates the top five languages—C++, JavaScript, Python, Go, and Solidity—highlighting their strengths, weaknesses, and real‑world blockchain applications.

BlockchainCDApp

0 likes · 11 min read

Essential Guide to Blockchain Programming: Top Languages, Platforms, and Use Cases

Qunar Tech Salon

Mar 13, 2019 · Fundamentals

Microsoft Open Sources Windows Calculator – Features, Build Instructions, and Community Feedback

Microsoft has open‑sourced the Windows 10 Calculator app under the MIT license, providing C++ source code, build prerequisites, feature lists, and community‑reported bugs, while highlighting its role in Microsoft's broader open‑source strategy.

BuildGuideCCalculator

0 likes · 5 min read

Microsoft Open Sources Windows Calculator – Features, Build Instructions, and Community Feedback

ITPUB

Mar 5, 2019 · Backend Development

What Do Top Tech Companies Really Test in Linux Server Engineer Interviews?

The article shares a developer’s experience interviewing at over 30 Chinese tech firms, breaking down three main interview focuses—data structures and algorithms, operating‑system and core‑technology knowledge, and project experience—while also offering practical advice on networking questions, open‑source tools, and how to evaluate a company's interview process.

CData StructuresInterview

0 likes · 16 min read

What Do Top Tech Companies Really Test in Linux Server Engineer Interviews?

21CTO

Mar 4, 2019 · Fundamentals

Master Technical Interviews: Data Structures, OS, Networking & C++ Tips

The article shares the author’s interview experiences at over 30 companies and provides a comprehensive guide covering data‑structure and algorithm questions, core C++ concepts, operating‑system fundamentals, networking protocols, open‑source tools, project‑experience expectations, and practical advice for evaluating both technical and non‑technical aspects of potential employers.

CData StructuresLinux

0 likes · 16 min read

Master Technical Interviews: Data Structures, OS, Networking & C++ Tips

Architecture Talk

Feb 23, 2019 · Backend Development

What Tech Companies Really Test in Server Developer Interviews – Insights from 30+ Companies

Drawing from interviews at over thirty tech firms, this article breaks down the three main interview tracks—data structures and algorithms, operating‑system fundamentals, and project experience—while also sharing practical advice on evaluating companies, handling non‑technical questions, and navigating the hiring process.

CLinuxSystem Design

0 likes · 15 min read

What Tech Companies Really Test in Server Developer Interviews – Insights from 30+ Companies

360 Tech Engineering

Feb 20, 2019 · Databases

Pika 3.0 New Features Overview

Pika 3.0, the open‑source C++ Redis‑compatible storage built on RocksDB, introduces a new Blackwidow engine, enhanced binlog, and optimized server layer, delivering higher interface performance, reduced disk usage, extended key length, full ZSET compatibility, and improved overall efficiency.

CDatabasePika

0 likes · 3 min read

Zhuanzhuan Tech

Feb 15, 2019 · Backend Development

Architecture and Design of ZhaiZhai IM System for a Second‑hand E‑commerce Platform

The article details the design and overall architecture of ZhaiZhai's instant messaging (IM) system, covering product positioning, a four‑layer architecture (user, entry, logic, storage), and analyses of scalability, high availability, reliability, extensibility, and performance, highlighting the use of C++, RPC, MySQL, TiDB, and custom middleware.

CInstant Messagingdistributed databases

0 likes · 13 min read

Architecture and Design of ZhaiZhai IM System for a Second‑hand E‑commerce Platform

MaGe Linux Operations

Jan 9, 2019 · Backend Development

How to Fetch Random Jokes via Free APIs with Python and C# Examples

This article demonstrates how to retrieve jokes from a free online API using Python, provides the same functionality in C#, shows the expected results, and includes links to the original API documentation for further exploration.

APICJokes

0 likes · 2 min read

How to Fetch Random Jokes via Free APIs with Python and C# Examples

Tencent Database Technology

Dec 20, 2018 · Fundamentals

Unexpected Behavior with -O2 Optimization Due to Strict Aliasing Violations in C++

The article explains why a C++ program produces different outputs with and without the -O2 optimization flag, tracing the issue to strict aliasing violations caused by type‑punning pointer casts, and shows how disabling -fstrict-aliasing or using -fno‑strict‑aliasing resolves the problem.

CCompiler OptimizationOptimization Flags

0 likes · 8 min read

Unexpected Behavior with -O2 Optimization Due to Strict Aliasing Violations in C++

Programmer DD

Dec 17, 2018 · Fundamentals

How to Compute √2 Efficiently: Binary Search, Newton’s Method, and C Tricks

Learn multiple techniques to calculate the square root of 2—including binary search, Newton’s iteration, and a clever C library implementation—through clear explanations, step‑by‑step illustrations, and full JavaScript and C code examples that reveal the underlying mathematics and performance considerations.

Binary SearchCNewton's method

0 likes · 4 min read

How to Compute √2 Efficiently: Binary Search, Newton’s Method, and C Tricks

dbaplus Community

Dec 2, 2018 · Big Data

Mastering Redis for Big Data: Architecture, Code Samples, and Performance Hacks

This article walks through the NewLife.Redis library’s two‑layer architecture, demonstrates basic and advanced usage with C# examples, shows pressure‑testing results, and shares practical tips such as GetAll/SetAll, pipelines, and serialization tricks for high‑throughput big‑data scenarios.

Big DataCCaching

0 likes · 13 min read

Mastering Redis for Big Data: Architecture, Code Samples, and Performance Hacks

21CTO

Nov 16, 2018 · Blockchain

Top Programming Languages for Blockchain Development: C++, Java, Python, Ruby, Solidity

This article introduces blockchain as a secure data‑block structure and presents a concise overview of five popular programming languages—C++, Java, Python, Ruby, and Solidity—highlighting why each is suited for building blockchain applications.

BlockchainCJava

0 likes · 4 min read

Top Programming Languages for Blockchain Development: C++, Java, Python, Ruby, Solidity

Efficient Ops

Oct 13, 2018 · Big Data

Boost Your Kafka Integration with KafkaBridge: Multi-Language SDK Overview

KafkaBridge is a lightweight, multi-language SDK that simplifies Kafka read/write operations, offering unified interfaces, long‑connection reuse for PHP‑FPM, and reliable message delivery, with detailed compilation steps, usage examples, and performance benchmarks across C++, Python, PHP, and Go.

CGolangKafka

0 likes · 7 min read

Boost Your Kafka Integration with KafkaBridge: Multi-Language SDK Overview

Meituan Technology Team

Jul 26, 2018 · Databases

Understanding and Optimizing Redis Rehash Mechanism and Scan Behavior

The article details how Redis’s incremental rehashing can double memory usage and trigger massive key eviction and scan inconsistencies in large‑scale clusters, explains the underlying dictionary structures, demonstrates the cursor bug when tables shrink, and presents a memory‑guard and scan‑cursor patch that resolves both problems.

CRedisRehash

0 likes · 26 min read

Understanding and Optimizing Redis Rehash Mechanism and Scan Behavior

Liangxu Linux

Jun 30, 2018 · Fundamentals

Top Open‑Source C Projects Every Developer Should Explore

This article presents a curated list of noteworthy open‑source C projects—including event libraries, caching systems, databases, web servers, testing frameworks, and classic Unix kernels—each with a brief description, key features, and download links for developers seeking practical learning resources.

CSystemsdatabases

0 likes · 13 min read

Top Open‑Source C Projects Every Developer Should Explore

Liangxu Linux

Jun 13, 2018 · Fundamentals

Master Enterprise-Scale Makefiles: Versioning, Libraries, and Build Automation

This tutorial presents a complete enterprise‑level Makefile example, detailing version numbering, dynamic library integration, macro definitions, include paths, compilation flags, output directory handling, and clean targets, while also showing the associated source code layout and how to retrieve the full project from the public account.

Build AutomationCDynamic Library

0 likes · 6 min read

Master Enterprise-Scale Makefiles: Versioning, Libraries, and Build Automation

Liangxu Linux

Jun 10, 2018 · Backend Development

How to Organize Shared C Code Across Multiple Applications with a Simple Makefile

This article explains a practical approach for managing common C source files shared by several applications by placing the shared code in a dedicated folder and using a Makefile that automatically discovers, compiles, and links both the common and application‑specific files, reducing redundancy and simplifying maintenance.

Backend DevelopmentBuild AutomationC

0 likes · 6 min read

How to Organize Shared C Code Across Multiple Applications with a Simple Makefile

Liangxu Linux

Jun 5, 2018 · Backend Development

How to Implement File-Based String Replacement in C: A Step‑by‑Step Guide

This article walks through the design and implementation of a C program that reads a text file, replaces all occurrences of a target substring with a new string using low‑level pointer operations, and writes the modified content back to the file, complete with memory‑allocation calculations and code examples.

CFile I/Opointer

0 likes · 6 min read

How to Implement File-Based String Replacement in C: A Step‑by‑Step Guide

Tencent Cloud Developer

May 24, 2018 · Game Development

How Unity3D Executes C#: Compilation, Mono, and the .NET Ecosystem

Unity3D runs C# scripts by compiling them to Common Intermediate Language, which the embedded Mono virtual machine executes—mirroring the .NET CLR—allowing cross‑platform execution, while also supporting other languages compiled to IL, and illustrating the compilation pipeline from source to native code.

CILUnity3D

0 likes · 7 min read

How Unity3D Executes C#: Compilation, Mono, and the .NET Ecosystem

21CTO

May 10, 2018 · Backend Development

How a Plug‑In Architecture Transforms Cross‑Platform Long‑Connection Components

This article explains how a unified, cross‑platform long‑connection component built on libuv, mbedTLS and WebSocket was refactored into a plug‑in architecture that decouples layers, uses double‑linked structures and function pointers, and dramatically improves flexibility and maintainability.

Clibuvnetworking

0 likes · 24 min read

How a Plug‑In Architecture Transforms Cross‑Platform Long‑Connection Components

AI Cyberspace

May 9, 2018 · Fundamentals

Master C Constants and Variables: Types, Definitions, and Common Pitfalls

This article explains C/C++ constants—including integer, floating‑point, character, string, and symbolic forms—their syntax, examples, and common errors, and then covers variables, their definition, assignment, initialization, and related best‑practice notes.

CC ProgrammingConstants

0 likes · 7 min read

Master C Constants and Variables: Types, Definitions, and Common Pitfalls

Xianyu Technology

May 5, 2018 · Mobile Development

Porting Video Fingerprinting to Mobile: From Frame Extraction to Bloom‑Filter Retrieval

This article details how to migrate a video‑fingerprinting pipeline—covering video frame extraction, Hessian‑Affine + SIFT feature computation, JPEG and BLAS dependencies, multi‑threading, NEON acceleration, package‑size reductions, and a Bloom‑filter based retrieval system—onto iOS and Android devices while addressing practical pitfalls and performance trade‑offs.

CHessian-AffineMobile Optimization

0 likes · 16 min read

Porting Video Fingerprinting to Mobile: From Frame Extraction to Bloom‑Filter Retrieval

DevOps

Apr 19, 2018 · Fundamentals

The Evolution of .NET: From Framework to Core and Beyond

This article provides a comprehensive overview of the .NET platform’s evolution, covering the original .NET Framework, its comparison with Java, the rise of Mono for cross‑platform support, the introduction of .NET Standard, the modern .NET Core and ASP.NET Core, and guidance on tooling and learning resources.

CCoreFramework

0 likes · 21 min read

The Evolution of .NET: From Framework to Core and Beyond

360 Zhihui Cloud Developer

Mar 20, 2018 · Databases

How Redis Implements Incremental Rehashing: A Deep Dive into Dictionary Internals

This article explains Redis's dictionary structure, the conditions that trigger rehashing, the step‑by‑step incremental rehash process, and provides the core C implementation code, illustrating how Redis maintains high performance while resizing its hash tables.

CDatabase InternalsRedis

0 likes · 8 min read

How Redis Implements Incremental Rehashing: A Deep Dive into Dictionary Internals

JD Tech

Mar 19, 2018 · Backend Development

Design and Implementation of KDNS: A High‑Performance DPDK‑Based DNS Server

This article presents the design, DPDK‑based implementation, performance optimizations, and test results of KDNS—a C‑language DNS server that replaces ContainerDNS's Go server, achieving near line‑rate processing, high availability, and significant latency improvements over traditional bind9 solutions.

CContainerDNSDNS

0 likes · 12 min read

Design and Implementation of KDNS: A High‑Performance DPDK‑Based DNS Server

UCloud Tech

Mar 14, 2018 · Backend Development

How to Call C/C++ Libraries from Java Using JNA: A Practical Guide

This article explains how to access native C/C++ functions and complex structures from Java using JNI, JNA, and SWIG, compares their trade‑offs, provides type‑mapping tables, detailed code examples for struct definitions, passing, and callbacks, and offers practical tips for reliable cross‑language integration.

CJNAJNI

0 likes · 9 min read

How to Call C/C++ Libraries from Java Using JNA: A Practical Guide

ITFLY8 Architecture Home

Mar 5, 2018 · Backend Development

Mastering the Circuit Breaker Pattern: Design, Implementation, and Testing

This article explains the circuit breaker pattern for distributed systems, detailing its problem context, state machine solution, implementation in C#, key considerations, usage scenarios, and comprehensive unit tests, illustrating how to improve system resilience and prevent cascading failures.

CCircuit BreakerDistributed Systems

0 likes · 21 min read

Mastering the Circuit Breaker Pattern: Design, Implementation, and Testing

360 Quality & Efficiency

Mar 2, 2018 · Fundamentals

How to Perform C Code Coverage Testing with gcov and lcov on Ubuntu

This article explains how to set up gcov and lcov on Ubuntu, write a simple C++ program, compile it with coverage flags, generate .gcno and .gcda files, use lcov to create an HTML coverage report, and interpret the resulting line and function coverage percentages.

CUbuntucode coverage

0 likes · 4 min read

How to Perform C Code Coverage Testing with gcov and lcov on Ubuntu

Beike Product & Technology

Feb 7, 2018 · Backend Development

High‑Performance Challenge: Optimizing a C‑Based User Information Service for Tens of Millions of Records

This article recounts a 2017 internal high‑performance competition where a C server handling a 40 million‑row user‑info dataset was progressively optimized through data compression, custom hash tables, memory layout redesign, and a thread‑pool model, ultimately achieving a four‑fold throughput increase.

CMemory Optimizationdata compression

0 likes · 13 min read

High‑Performance Challenge: Optimizing a C‑Based User Information Service for Tens of Millions of Records

Tencent Music Tech Team

Dec 22, 2017 · Mobile Development

Organizing Native Layer Code and Implementing Dynamic Loading/Unloading of .so Libraries in Android

The article outlines a systematic method for structuring native‑layer code and using dlopen, dlsym, and dlclose to dynamically load and unload .so libraries on Android, enabling selective loading, reduced memory usage, hot‑fix updates, and solutions to STL version, permission, and C++ name‑mangling challenges.

AndroidCDynamic Loading

0 likes · 14 min read

Organizing Native Layer Code and Implementing Dynamic Loading/Unloading of .so Libraries in Android

MaGe Linux Operations

Dec 15, 2017 · Backend Development

Boost Your CATIA CAA Development with a Python‑Powered API Manager

This article describes how the author built a Python library called CAAFinder to simplify Dassault CATIA CAA development by managing API references, and walks through setting up a PyCharm project with a VirtualEnv to use the tool.

APICCAD

0 likes · 6 min read

Boost Your CATIA CAA Development with a Python‑Powered API Manager

21CTO

Nov 14, 2017 · Fundamentals

Why Python Overtook C# in the TIOBE November Rankings

The November TIOBE index shows Python climbing to fourth place, surpassing C#, while other script languages slip down the top‑20, prompting analysis of Python's rapid growth, Java's decline, and the performance challenges facing scripting languages in large‑scale software.

CTIOBEpopularity

0 likes · 4 min read

Why Python Overtook C# in the TIOBE November Rankings

JD Retail Technology

Nov 2, 2017 · Fundamentals

Understanding C Macros: Definition, Types, Usage, and Advanced Techniques

This article explains C macro fundamentals, covering object-like and function-like macros, advanced techniques such as variadic macros, token pasting, and practical examples like NSLog, singleton, and weak/strong patterns in ReactiveCocoa in iOS development.

CMacrosObjective‑C

0 likes · 16 min read

Understanding C Macros: Definition, Types, Usage, and Advanced Techniques

Qunar Tech Salon

Oct 24, 2017 · Databases

Design and Implementation of Pegasus: Xiaomi’s Distributed Key‑Value Store

This article explains why Xiaomi built Pegasus to replace HBase, describes its architecture—including MetaServer, ReplicaServer, partitioning, multi‑replica design and the PacificA consensus algorithm—covers implementation challenges such as load balancing, consistency, latency, testing, and outlines current status and future plans.

CConsistencyPEGASUS

0 likes · 23 min read

Design and Implementation of Pegasus: Xiaomi’s Distributed Key‑Value Store

21CTO

Oct 8, 2017 · Fundamentals

Which Programming Languages Are Rising in 2017? Insights from the TIOBE Index

According to the October 2017 TIOBE Index, Java, C, and C++ remain the top three languages, while C# and Python hold fourth and fifth places; Swift has slipped to 16th, and the rise of hybrid mobile frameworks is boosting C# and JavaScript at the expense of Java and Swift.

CJavaJavaScript

0 likes · 3 min read

Which Programming Languages Are Rising in 2017? Insights from the TIOBE Index

Qunar Tech Salon

Sep 22, 2017 · Backend Development

Interview: The Story Behind Baidu’s Open‑Source RPC Framework brpc

This article interviews Baidu’s chief architect Ge Jun about the origins, design principles, performance advantages, and open‑source release of the high‑performance C++/Java RPC framework brpc, highlighting its extensive internal use, architectural features, and future roadmap.

COpen SourceRPC

0 likes · 14 min read

Interview: The Story Behind Baidu’s Open‑Source RPC Framework brpc

Programmer DD

Aug 15, 2017 · Fundamentals

Mastering Domain-Driven Design: Core Concepts, Patterns, and Practical Code Examples

This article explains the fundamental ideas of Domain‑Driven Design, showing how to build expressive domain models, use a ubiquitous language, map bounded contexts, apply strategic and tactical patterns, and implement the concepts with C# code, UML sketches, and architectural guidelines.

CDDDDomain‑Driven Design

0 likes · 19 min read

Mastering Domain-Driven Design: Core Concepts, Patterns, and Practical Code Examples

Hujiang Technology

Jul 25, 2017 · Mobile Development

Guide to Cross‑Compiling OpenSSL 1.1.0e for Android, iOS, and Linux with JNI Integration

This tutorial explains how to build and integrate OpenSSL 1.1.0e for modern Android, iOS, and Linux environments, providing shell scripts for each platform, detailed configuration steps, and examples of using the resulting static libraries in C, JNI, and Java code.

This article walks through the Linux kernel's clock management code, explaining how the clk_get_sys function matches devices, handles mutexes, and enables clocks on Samsung platforms, while illustrating each step with annotated code screenshots.

Backend DevelopmentCClock Management

0 likes · 6 min read

Understanding Linux Kernel Clock Management: A Step‑by‑Step Walkthrough

Continuous Delivery 2.0

Mar 15, 2017 · R&D Management

Improving Continuous Integration: Reducing Build Times, Enabling Automated Testing, and Managing Estimations

The article discusses practical solutions for long C++ build times, introduces a company‑wide compile cluster with a localbuild.sh script, outlines how developers can run automated tests, defines testing strategies, sets criteria for feature readiness, and presents approaches to performance testing and estimation adjustments within a CI‑driven development workflow.

Build OptimizationCautomated testing

0 likes · 9 min read

Improving Continuous Integration: Reducing Build Times, Enabling Automated Testing, and Managing Estimations

Tencent Music Tech Team

Feb 17, 2017 · Game Development

Build a Simple Gaze Interaction for Google Cardboard VR in Unity

This step‑by‑step guide shows how to set up Unity with Google’s Cardboard SDK, import the required assets, add gaze‑based interaction components, write a C# script to change object colors on focus, link events, and finally package the project for Android devices.

Android BuildCGame Development

0 likes · 12 min read

Build a Simple Gaze Interaction for Google Cardboard VR in Unity

ITFLY8 Architecture Home

Dec 23, 2016 · Fundamentals

What Happens Inside a Hello World Program? Unveiling Object Files, Linking, and Loading

This article explains how a simple Hello World program is transformed from source code into machine code, detailing the roles of object files, sections, linking (static and dynamic), and loading, while showing practical examples with GCC, objdump, and readelf on Linux.

CExecutablelinking

0 likes · 16 min read

What Happens Inside a Hello World Program? Unveiling Object Files, Linking, and Loading

21CTO

Dec 5, 2016 · Backend Development

How to Implement array_concat in a PHP Extension: Merging Arrays at the C Level

This article explains how to create a PHP extension function named array_concat that merges two arrays by concatenating string values for matching keys, detailing the required C code, Zend hash operations, parameter parsing, and example usage, providing a practical guide for PHP developers.

ArrayCExtension

0 likes · 6 min read

How to Implement array_concat in a PHP Extension: Merging Arrays at the C Level

dbaplus Community

Nov 22, 2016 · Databases

How to Add a ‘STOP ALL SLAVES’ Command to MySQL 5.6 Source Code

This guide walks through extending MySQL 5.6.32 by adding a new SQLCOM_STOP_SLAVES command that stops all replication slaves, detailing modifications to lex.h, sql_cmd.h, sql_yacc.yy, sql_parse.cc, and mysqld.cc, along with compilation tips and troubleshooting steps.

CDatabaseMySQL

0 likes · 7 min read

How to Add a ‘STOP ALL SLAVES’ Command to MySQL 5.6 Source Code

ITPUB

Nov 10, 2016 · Fundamentals

Linux Socket I/O Models Explained: Blocking, Non‑Blocking, Select & Signal‑Driven

This article uses a mailbox analogy to explain Linux socket I/O models—synchronous blocking, synchronous non‑blocking, I/O multiplexing with select, and signal‑driven I/O—providing detailed C and Perl code examples and discussing each model's advantages and drawbacks.

The article introduces Ctrip DAL, an open‑source Java/C# database access framework that supports sharding across MySQL and SQL Server, provides a code generator and client library, and helps large enterprises manage multi‑team, multi‑database environments while ensuring scalability, consistency, and security.

CCtripDAL

0 likes · 5 min read

Ctrip DAL: An Open‑Source Database Access Framework for Scalable Enterprise Development

Ctrip Technology

Sep 19, 2016 · Databases

Ctrip DAL: An Open-Source Database Access Framework for Scalable Enterprise Applications

Ctrip DAL is an open‑source, multi‑language database access framework that supports sharding, code generation, and cross‑team management, enabling large‑scale enterprises to protect existing investments while rapidly scaling their data layer across MySQL and SQL Server.

CCtripDAL

0 likes · 4 min read

Ctrip DAL: An Open-Source Database Access Framework for Scalable Enterprise Applications

Architecture Digest

Sep 19, 2016 · Backend Development

Getting Started with Exceptionless: Real‑time Error Logging for ASP.NET Core

This article introduces the open‑source Exceptionless framework, explains how to set up an account, integrate it into an ASP.NET Core project, configure logging and custom events with code examples, and shows how to view and manage collected error data.

ASP.NET CoreCError Logging

0 likes · 9 min read

Getting Started with Exceptionless: Real‑time Error Logging for ASP.NET Core

Architecture Digest

Sep 18, 2016 · Fundamentals

Smart Audio Recorder Based on Volume Threshold – Implementation and Code

This article describes a C# program that continuously captures microphone audio, uses volume thresholds derived from Fourier analysis to automatically start and stop recording, and provides the full configuration and source code needed to build a smart recorder for capturing dream speech.

CProgramming tutorialSignal Processing

0 likes · 7 min read

Smart Audio Recorder Based on Volume Threshold – Implementation and Code

Tencent Music Tech Team

Aug 25, 2016 · Frontend Development

Introduction to WebAssembly, Emscripten, and Binaryen: Installation, Compilation, and Usage

This guide introduces WebAssembly and its ecosystem—explaining how Emscripten compiles C/C++ to asm.js or .wasm, how Binaryen converts asm.js to the final binary, and provides step‑by‑step Ubuntu installation, simple hello‑world compilation, build‑process wrappers, and real‑world examples such as FFmpeg, SQLite, and game engines.

BinaryenCEmscripten

0 likes · 10 min read

Introduction to WebAssembly, Emscripten, and Binaryen: Installation, Compilation, and Usage

Huawei Cloud Developer Alliance

Jul 11, 2016 · Fundamentals

What Happens Inside a Simple Hello World? A Deep Dive into C Assembly

This article walks through a basic C "Hello World" program, shows its compiled assembly in Visual Studio, and explains each instruction and register to reveal the low‑level operations hidden behind a seemingly trivial example.

AssemblyCDebugging

0 likes · 7 min read

What Happens Inside a Simple Hello World? A Deep Dive into C Assembly

ITPUB

Jul 7, 2016 · Fundamentals

Mastering Linux printk: Levels, Macros, and Kernel Logging Mechanics

This article provides a comprehensive guide to Linux's printk system, covering its ring‑buffer design, log level definitions, early boot usage, helper macros, rate‑limiting techniques, kernel‑side implementation details, and ways to access logs from user space.

CDebuggingOperating Systems

0 likes · 14 min read

Mastering Linux printk: Levels, Macros, and Kernel Logging Mechanics

Architecture Digest

Jun 22, 2016 · Fundamentals

A Comprehensive Guide to Unit Testing: Concepts, Best Practices, and Code Examples

This article explains the fundamentals of unit testing, compares it with integration testing and test‑driven development, describes what makes a good unit test, shows how to improve code testability, and provides concrete C# examples using XUnit, FluentAssertions, and Moq.

This tutorial walks you through installing Lua on Ubuntu, creating a convenient symlink, then demonstrates both calling Lua functions from C and invoking C functions from Lua, complete with compilation commands and expected output screenshots.

CTutorialUbuntu

0 likes · 4 min read

How to Install Lua and Bridge C with Lua on Ubuntu: Step‑by‑Step Guide