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Performance

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dbaplus Community
dbaplus Community
Sep 24, 2018 · Databases

Master MySQL Performance: Practical Optimizations for Large Tables

This guide explains why MySQL performance drops when a single table grows huge and provides a comprehensive set of optimization steps—including field type choices, index design, query tuning, engine selection, system parameters, hardware scaling, read/write splitting, caching, partitioning, vertical and horizontal sharding, and architecture recommendations—to keep MySQL fast and reliable at scale.

IndexingMySQLPerformance
0 likes · 24 min read
Master MySQL Performance: Practical Optimizations for Large Tables
Tencent IMWeb Frontend Team
Tencent IMWeb Frontend Team
Sep 23, 2018 · Frontend Development

Unlock Browser Rendering: Deep Dive into WebKit, Chromium & Performance

This article provides an in‑depth exploration of browser rendering mechanisms, covering engine architecture, multi‑process models, DOM and event handling, RenderObject/RenderLayer construction, software vs hardware rendering, and practical JavaScript performance monitoring tools such as Benchmark.js and JsPerf.

PerformanceRenderingWebKit
0 likes · 25 min read
Unlock Browser Rendering: Deep Dive into WebKit, Chromium & Performance
UC Tech Team
UC Tech Team
Sep 20, 2018 · Fundamentals

A Decade of V8: Milestones, Performance Evolution, and Future Outlook

This article chronicles the ten‑year history of Google’s V8 JavaScript engine—from its secretive beginnings and open‑source launch to major performance improvements, benchmark trends, security challenges, and its expanding role in browsers, Node.js, and WebAssembly—highlighting key milestones and future directions.

ChromeEngine EvolutionJavaScript engine
0 likes · 13 min read
A Decade of V8: Milestones, Performance Evolution, and Future Outlook
UC Tech Team
UC Tech Team
Sep 19, 2018 · Frontend Development

Using the React Profiler Plugin in React DevTools

This article explains how to enable and use the React Profiler plugin in React DevTools to record, visualize, and analyze component rendering performance through commits, flamegraphs, sorting charts, component charts, and interactions, and provides troubleshooting tips for common issues.

DebuggingDevToolsPerformance
0 likes · 8 min read
Using the React Profiler Plugin in React DevTools
DevOpsClub
DevOpsClub
Sep 18, 2018 · Operations

What the 2018 Global DevOps State Report Reveals About High‑Performance Teams

The 2018 Global DevOps State Survey, authored by leading DevOps experts, analyzes data from over 30,000 professionals to identify emerging trends, new elite performance standards, and actionable insights for organizations seeking to accelerate software delivery and operational excellence.

DevOpsPerformanceoperational excellence
0 likes · 5 min read
What the 2018 Global DevOps State Report Reveals About High‑Performance Teams
DevOps
DevOps
Sep 17, 2018 · Operations

Key Insights from the 2018 Global DevOps State of the World Report

The 2018 Global DevOps State of the World Report, compiled by DORA with contributions from leading experts, presents extensive data from over 30,000 professionals, highlights new trends such as accelerated practices, cloud infrastructure, elite high‑performance organizations, and offers a live online session to help practitioners quickly grasp its valuable findings.

DevOpsOperationsPerformance
0 likes · 6 min read
Key Insights from the 2018 Global DevOps State of the World Report
21CTO
21CTO
Sep 15, 2018 · Backend Development

Why HHVM Is Dropping PHP Support and What It Means for Developers

Facebook's HHVM team announced that version 3.30 will be the last to support PHP, outlining a timeline for dropping PHP, recommending migration to Hack or PHP 7, and detailing 2018‑19 open‑source plans to ease the transition and improve tooling.

PHPPerformancebackend
0 likes · 4 min read
Why HHVM Is Dropping PHP Support and What It Means for Developers
Yuewen Frontend Team
Yuewen Frontend Team
Sep 14, 2018 · Frontend Development

Master Long-Term Caching and Code Splitting to Supercharge Your Webpack Builds

This article explains how to improve web application performance by leveraging persistent caching with proper cache‑control headers, versioning bundles using hash‑based filenames, extracting dependencies and runtime into separate chunks, inlining runtime scripts, applying lazy loading with dynamic imports, splitting code by routes or pages, and stabilizing module IDs with hashed IDs, all using webpack configurations for both version 3 and 4.

Code SplittingPerformancecaching
0 likes · 20 min read
Master Long-Term Caching and Code Splitting to Supercharge Your Webpack Builds
ITPUB
ITPUB
Sep 12, 2018 · Databases

MySQL vs PostgreSQL: In‑Depth Feature Comparison and Choosing the Right Database

This article compares MySQL and PostgreSQL across open‑source licensing, ACID compliance, SQL standard support, replication modes, concurrency control, performance characteristics, high‑availability solutions, external data source integration, and storage models, helping readers decide which database best fits their workloads.

Database ComparisonMySQLOpen Source
0 likes · 12 min read
MySQL vs PostgreSQL: In‑Depth Feature Comparison and Choosing the Right Database
Xianyu Technology
Xianyu Technology
Sep 10, 2018 · Mobile Development

Performance Comparison of Flutter vs React Native on iOS and Android

The Xianyu team rewrote a product detail page in Flutter, benchmarked it against native and React Native implementations on iPhone 5c, iPhone 6s, Xiaomi 2s and Samsung S8, and found Flutter consistently matched or outperformed native on iOS and surpassed React Native on both platforms in FPS, CPU usage and memory stability, earning it a gold‑medal rating.

FlutterPerformancecross-platform
0 likes · 8 min read
Performance Comparison of Flutter vs React Native on iOS and Android
Java Backend Technology
Java Backend Technology
Sep 10, 2018 · Backend Development

JDK vs CGLib in Spring AOP: Which Proxy Is Faster?

This article explains the fundamentals of Spring AOP's JDK and CGLib dynamic proxies, compares their implementation details, presents performance test results across Java 1.6‑1.8, and offers practical guidance on choosing the appropriate proxy based on use‑case.

AOPCGLIBDynamic Proxy
0 likes · 7 min read
JDK vs CGLib in Spring AOP: Which Proxy Is Faster?
Tencent IMWeb Frontend Team
Tencent IMWeb Frontend Team
Sep 9, 2018 · Frontend Development

Boost Your Site Speed: Proven Frontend Performance Optimization Techniques

This article revisits and updates a previous guide, replacing webpack3 with webpack4 and adding modern automation concepts, then systematically walks through network transmission, page rendering, and JavaScript blocking optimizations—covering caching, resource compression, sprite generation, GPU acceleration, and server‑side techniques like gzip, CDN, load balancing, and Node.js scaling.

CDNPerformancecaching
0 likes · 31 min read
Boost Your Site Speed: Proven Frontend Performance Optimization Techniques
Java Backend Technology
Java Backend Technology
Sep 8, 2018 · Databases

Master MySQL Quickly: Essential Tips, Best Practices, and Common Pitfalls

This comprehensive guide walks you through mastering MySQL by covering server configuration choices, storage engine selection, data type recommendations, index strategies, backup methods, logging options, and practical advice on triggers, views, stored procedures, and character set handling, all aimed at boosting performance and avoiding common mistakes.

DatabaseMySQLPerformance
0 likes · 26 min read
Master MySQL Quickly: Essential Tips, Best Practices, and Common Pitfalls
MaGe Linux Operations
MaGe Linux Operations
Sep 7, 2018 · Operations

Why Linux ‘Ate My RAM’: Understanding free, buffers, and cache

Linux appears to consume most of a system’s RAM, but the free command’s output, including buffers and cache, actually reflects memory used for performance optimization; this article explains the distinction, how to interpret free’s columns, and demonstrates the impact with a 1 GB file read experiment.

BuffersCacheLinux
0 likes · 7 min read
Why Linux ‘Ate My RAM’: Understanding free, buffers, and cache
Java Architect Essentials
Java Architect Essentials
Sep 6, 2018 · Backend Development

Curated Book List for Java Architects and Backend Developers

This article presents a comprehensive, categorized reading list for Java backend architects, covering domestic and foreign architecture books, core Java references, operating system and networking texts, algorithm guides, programmer self‑improvement titles, and team‑building resources, with brief evaluations and recommendations for each.

Book RecommendationsPerformance
0 likes · 10 min read
Curated Book List for Java Architects and Backend Developers
DevOps
DevOps
Sep 5, 2018 · Operations

Five Essential Flow Metrics for Effective DevOps Transformations

This article explains five essential flow metrics—Flow Time, Flow Efficiency, WIP Report, Aging Report, and Flow Distribution—showing how they help technology companies measure outcomes, improve predictability, and optimize DevOps transformations through data‑driven insights.

DevOpsOperationsPerformance
0 likes · 11 min read
Five Essential Flow Metrics for Effective DevOps Transformations
ITPUB
ITPUB
Sep 3, 2018 · Databases

Why Redis Leads Modern Key‑Value Stores: Features, Use Cases, and Performance

This article provides a comprehensive overview of Redis as a high‑performance, in‑memory key‑value store, explaining its data structures, persistence options, replication, benchmark results, and a wide range of real‑world scenarios where Redis excels over traditional databases.

In-Memory DatabasePerformanceRedis
0 likes · 12 min read
Why Redis Leads Modern Key‑Value Stores: Features, Use Cases, and Performance
Efficient Ops
Efficient Ops
Aug 30, 2018 · Databases

What’s New in MySQL 8.0 InnoDB? Key Features and Performance Boosts

This article summarizes the major functional and performance enhancements introduced in MySQL 8.0 InnoDB, including a unified data dictionary, atomic DDL, fast column addition, encryption, improved Memcached plugin, parallel redo log writes, and future roadmap items.

DatabaseInnoDBMySQL
0 likes · 13 min read
What’s New in MySQL 8.0 InnoDB? Key Features and Performance Boosts
360 Tech Engineering
360 Tech Engineering
Aug 30, 2018 · Mobile Development

Mobile H5 Performance Testing: Challenges, Solutions, and Tool Comparisons

This article examines the difficulties of mobile H5 performance testing—including root‑required tcpdump, JavaScript injection, HTTPS pcap parsing, and white‑screen timing—provides background on mobile browsers, outlines performance metrics, compares four testing approaches, and describes a WebView monitoring workflow with data conversion and visualization.

Performancemitmproxymobile
0 likes · 10 min read
Mobile H5 Performance Testing: Challenges, Solutions, and Tool Comparisons
360 Quality & Efficiency
360 Quality & Efficiency
Aug 29, 2018 · Frontend Development

Mobile H5 Performance Testing: Challenges, Solutions, and Tool Comparison

This article examines the difficulties of automating mobile H5 performance testing—such as root‑required tcpdump, HTTPS pcap parsing, and ambiguous white‑screen timing—and presents background on mobile browsers, W3C performance metrics, and a comparative review of practical testing tools and a custom WebView monitoring workflow.

Performancemitmproxymobile
0 likes · 10 min read
Mobile H5 Performance Testing: Challenges, Solutions, and Tool Comparison
Programmer DD
Programmer DD
Aug 28, 2018 · Backend Development

From Beginner to Pro: The Ultimate Skill Tree for Java Backend Developers

This comprehensive guide outlines the essential technical and soft‑skill roadmap for programmers, covering computer fundamentals, data structures, Java basics, multithreading, JVM internals, databases, distributed systems, architecture, learning methods, personal branding, English importance, and ways to stay competitive.

Backend DevelopmentJavaLearning Path
0 likes · 18 min read
From Beginner to Pro: The Ultimate Skill Tree for Java Backend Developers
21CTO
21CTO
Aug 27, 2018 · Frontend Development

Mastering Browser Architecture: From Multi‑Process to JS Event Loop

This comprehensive guide walks experienced front‑end developers through the browser's multi‑process model, internal threading, rendering pipeline, JavaScript single‑threaded execution, event loop mechanics, Web Workers, and performance‑related concepts like macrotasks, microtasks, and hardware‑accelerated compositing.

BrowserJavaScriptPerformance
0 likes · 35 min read
Mastering Browser Architecture: From Multi‑Process to JS Event Loop
Big Data and Microservices
Big Data and Microservices
Aug 27, 2018 · Industry Insights

What Makes Large‑Scale Websites Tick? Architecture Principles and Best Practices

This article outlines the key characteristics of large‑scale websites and presents a comprehensive set of architectural goals, patterns, and techniques—including performance tuning, high availability, scalability, extensibility, security, and agile operations—to guide the design of robust, user‑centric online platforms.

AgilePerformancearchitecture
0 likes · 10 min read
What Makes Large‑Scale Websites Tick? Architecture Principles and Best Practices
MaGe Linux Operations
MaGe Linux Operations
Aug 24, 2018 · Fundamentals

20 Proven Python Tricks to Supercharge Your Code Performance

This article presents 20 practical Python performance tips—from choosing O(1) data structures and reducing redundant data to leveraging generators, C extensions, multiprocessing, and profiling tools—complete with benchmark code snippets that demonstrate measurable speed gains across common coding patterns.

C extensionsOptimizationPerformance
0 likes · 16 min read
20 Proven Python Tricks to Supercharge Your Code Performance
Beike Product & Technology
Beike Product & Technology
Aug 24, 2018 · Mobile Development

How to Accurately Track Card Exposure in Android RecyclerView

This article explains the shortcomings of hard‑coded exposure tracking in the Beike Zhaofang Android app, benchmarks industry practices, proposes a flexible API‑driven strategy, and provides a complete RecyclerView scroll‑listener implementation with a double‑ended queue to record precise card visibility durations.

APIAndroidExposure Tracking
0 likes · 7 min read
How to Accurately Track Card Exposure in Android RecyclerView
Architecture Digest
Architecture Digest
Aug 21, 2018 · Backend Development

Evolution of Java Caching at iQIYI: From Database Lookups to Guava and Caffeine

This article traces iQIYI's five‑stage journey of Java caching—from simple database queries and in‑process HashMap caches, through Guava's advanced features addressing lock contention, expiration, and refresh, to the high‑performance Caffeine library with its W‑TinyLFU algorithm—while providing code examples and architectural insights.

CaffeineGuavaLRU
0 likes · 20 min read
Evolution of Java Caching at iQIYI: From Database Lookups to Guava and Caffeine
Java Backend Technology
Java Backend Technology
Aug 20, 2018 · Backend Development

From Redis to Caffeine: Evolution of Java Caching Strategies at iQIYI

This article traces iQIYI’s five‑stage Java caching journey—from early database lookups, through Redis synchronization, in‑process HashMap and Guava caches, to modern Caffeine with W‑TinyLFU—explaining each phase’s advantages, drawbacks, eviction algorithms, and implementation details such as segment locking, expiration queues, and multi‑queue data structures.

Cache EvictionCaffeineGuava
0 likes · 21 min read
From Redis to Caffeine: Evolution of Java Caching Strategies at iQIYI
dbaplus Community
dbaplus Community
Aug 19, 2018 · Databases

Redis Deployment Options: Pros & Cons of Single, Replication, Sentinel, Cluster, and Custom Solutions

This article examines five common Redis deployment patterns—single instance, master‑slave replication, Sentinel, Cluster, and custom high‑availability solutions—detailing their architectures, advantages, drawbacks, and practical configuration tips to help engineers choose the most suitable setup for their workloads.

ClusterDatabasePerformance
0 likes · 12 min read
Redis Deployment Options: Pros & Cons of Single, Replication, Sentinel, Cluster, and Custom Solutions
Java Captain
Java Captain
Aug 19, 2018 · Fundamentals

Performance Comparison of Java forEach, C‑Style Loop, and Stream API

This article examines Java's forEach syntax, C‑style for loops, and Stream API by benchmarking their execution times on large collections, explaining the underlying mechanisms that cause performance differences and identifying the most efficient traversal method for Sets.

PerformanceStreambenchmarking
0 likes · 7 min read
Performance Comparison of Java forEach, C‑Style Loop, and Stream API
iQIYI Technical Product Team
iQIYI Technical Product Team
Aug 16, 2018 · Mobile Development

Performance Optimization and Frame‑Rate Testing for iOS Mobile Client Dynamic Layout

The article outlines iQIYI’s iOS dynamic‑layout architecture, recommends CADisplayLink for frame‑rate checks and TimeProfiler for deep analysis, then details a two‑phase optimization workflow—eliminating main‑thread bottlenecks (e.g., string formatting, image loading, view hierarchy changes) and reducing off‑screen rendering and layer blending through layer tricks, caching, and asset adjustments—to achieve smoother UI on low‑end devices.

Frame RateOptimizationPerformance
0 likes · 13 min read
Performance Optimization and Frame‑Rate Testing for iOS Mobile Client Dynamic Layout
Meitu Technology
Meitu Technology
Aug 15, 2018 · Backend Development

Design and Performance Analysis of the Zap Logging Library in Go

The article examines Uber’s high‑throughput Go logging library zap, detailing its structured‑logging design, separation of concerns, copy‑on‑write filtering, extensive sync.Pool object reuse, reflection‑free type‑specific encoding, dynamic HTTP level control, and supplemental features such as a sugar API and log‑rotation, which together deliver superior performance over traditional libraries.

ConcurrencyGoLogging
0 likes · 18 min read
Design and Performance Analysis of the Zap Logging Library in Go
High Availability Architecture
High Availability Architecture
Aug 15, 2018 · Backend Development

Deep Dive into Uber's zap: Architecture, High‑Performance Design, and Lessons for Building Go Logging Libraries

This article analyzes Uber's open‑source Go logging library zap, explaining its architectural trade‑offs, performance‑boosting techniques such as object pooling, reflection avoidance, and write‑time copying, and offers practical guidance for developers who want to build high‑performance logging components in Go.

GoLoggingPerformance
0 likes · 18 min read
Deep Dive into Uber's zap: Architecture, High‑Performance Design, and Lessons for Building Go Logging Libraries
MaGe Linux Operations
MaGe Linux Operations
Aug 14, 2018 · Fundamentals

Rewrite Multi‑Line Functions Using Python Lambda – Surprising Tricks

Explore unconventional Python techniques—including simulating multi‑line functions with lambda expressions, clever ternary operator shortcuts, list‑comprehension methods for deduplication, generating Fibonacci sequences, and mutable default arguments—while highlighting pitfalls and performance considerations for each trick.

LambdaPerformancePython
0 likes · 8 min read
Rewrite Multi‑Line Functions Using Python Lambda – Surprising Tricks
dbaplus Community
dbaplus Community
Aug 13, 2018 · Databases

How MySQL 8.0’s WriteSet Parallel Replication Eliminates Replication Lag

This article explains the evolution of MySQL replication, from the classic master‑slave model to schema‑level and group‑commit parallelism in 5.7, and finally the WriteSet‑based parallel replication introduced in MySQL 8.0, including configuration parameters, conflict‑detection logic, and performance test results.

Database ReplicationMySQLParallel Replication
0 likes · 19 min read
How MySQL 8.0’s WriteSet Parallel Replication Eliminates Replication Lag
Xianyu Technology
Xianyu Technology
Aug 13, 2018 · Backend Development

Reactive Programming Practice in Xianyu: RxJava Refactoring and Performance Evaluation

By refactoring Xianyu’s key features with RxJava 2.0, the team replaced blocking logging, HTTP, RPC, and cache operations with asynchronous streams, cutting response time by half, boosting CPU utilization to 97%, raising throughput about 30%, and demonstrating a unified, core‑size thread‑pool model.

AsynchronousPerformanceReactive Programming
0 likes · 9 min read
Reactive Programming Practice in Xianyu: RxJava Refactoring and Performance Evaluation
Architects' Tech Alliance
Architects' Tech Alliance
Aug 11, 2018 · Industry Insights

Mastering Cache Architecture: From CDN to Distributed Systems

This article provides a comprehensive overview of caching in large distributed systems, covering CDN, reverse‑proxy, local and distributed caches, popular implementations such as Ehcache, Guava, Memcached and Redis, common pitfalls like consistency and avalanche, and practical solutions with real‑world case studies.

EhcacheGuavaMemcached
0 likes · 11 min read
Mastering Cache Architecture: From CDN to Distributed Systems
Meituan Technology Team
Meituan Technology Team
Aug 9, 2018 · Mobile Development

Flutter: Architecture, Hot Reload, Plugins, Build Process, Performance and Integration

Flutter, Google’s open‑source cross‑platform UI framework built on Dart and Skia, provides native‑level performance through a layered widget‑rendering architecture, supports rapid development via hot‑reload (with known limits), offers extensive plugins, can be integrated into Android apps as an AAR, and delivers comparable frame‑rate performance to native code with a modest APK size increase.

DARTFlutterPerformance
0 likes · 41 min read
Flutter: Architecture, Hot Reload, Plugins, Build Process, Performance and Integration
DataFunTalk
DataFunTalk
Aug 3, 2018 · Databases

HBase in Practice: Performance Tuning, Monitoring, and Issue Diagnosis

This article presents a comprehensive guide to HBase performance optimization, covering I/O throttling, compaction and flush settings, multi‑WAL strategies, SSD usage, version‑specific pitfalls, key monitoring metrics, log analysis, and practical troubleshooting techniques for production clusters.

Performancemonitoring
0 likes · 12 min read
HBase in Practice: Performance Tuning, Monitoring, and Issue Diagnosis
DevOps
DevOps
Aug 3, 2018 · Operations

How to Choose the Right TFS Network Topology and Plan a Data Storage Strategy

This article explains how to select an appropriate Team Foundation Server (TFS) deployment topology and design a data storage strategy, covering single, dual, and cluster deployments, hardware recommendations by team size, high‑availability options, performance testing results, and best practices for managing TFS databases.

DatabaseDevOpsPerformance
0 likes · 12 min read
How to Choose the Right TFS Network Topology and Plan a Data Storage Strategy
ITFLY8 Architecture Home
ITFLY8 Architecture Home
Aug 1, 2018 · Information Security

Debunking 7 Common HTTPS Myths: Caching, Cost, Speed, and More

This article dispels seven widespread HTTPS misconceptions—from caching and certificate costs to speed and IP requirements—explaining how browsers handle secure caching, affordable SSL options, wildcard certificates, migration steps, performance impacts, and why HTTPS is essential beyond login pages.

HTTPSPerformanceSSL
0 likes · 7 min read
Debunking 7 Common HTTPS Myths: Caching, Cost, Speed, and More
Meituan Technology Team
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.

C++Hash TableMemory Management
0 likes · 26 min read
Understanding and Optimizing Redis Rehash Mechanism and Scan Behavior
Java Backend Technology
Java Backend Technology
Jul 26, 2018 · Databases

7 Common Redis Misuse Scenarios and How to Fix Them

This article outlines seven frequent misuse patterns in Redis development—such as improper use of collection types, missing expirations, oversized values, inefficient batch operations, unnecessary requests, poor key naming, and unsafe commands—provides real‑world case analyses, and offers practical recommendations to improve Redis health and performance.

DatabaseOptimizationPerformance
0 likes · 11 min read
7 Common Redis Misuse Scenarios and How to Fix Them
iQIYI Technical Product Team
iQIYI Technical Product Team
Jul 20, 2018 · Mobile Development

Android App Startup Optimization: Process, Measurement, and Performance Improvements

The article details iQIYI’s systematic approach to Android app startup optimization—analyzing cold‑start processes, measuring latency with SysTrace and adb, applying process‑aware initialization, async work off the UI thread, layout simplifications, delayed services, and automated tracing—to achieve up to 40 % launch‑time reduction and establish continuous monitoring.

ADBAndroidPerformance
0 likes · 15 min read
Android App Startup Optimization: Process, Measurement, and Performance Improvements
Meituan Technology Team
Meituan Technology Team
Jul 19, 2018 · Mobile Development

EasyReact: A Reactive Programming Framework for iOS Development

EasyReact is an iOS reactive programming framework that replaces closure‑based data flow with object‑graph nodes, offering visual EZRNode debugging, automatic memory management, and cross‑platform potential while delivering up to 725 % faster performance than ReactiveCocoa, simplifying learning, debugging, and future Swift‑based extensions.

DebuggingMVVMObjective‑C
0 likes · 16 min read
EasyReact: A Reactive Programming Framework for iOS Development
Alibaba Cloud Developer
Alibaba Cloud Developer
Jul 19, 2018 · Mobile Development

How Flutter’s Engine Thread Model Boosts Mobile Performance

This article explains Flutter’s cross‑platform engine architecture, detailing its four Task Runners, the Dart isolate model, platform‑specific implementations, custom thread configurations, and common pitfalls, helping developers understand and optimise performance for mobile apps.

Dart IsolateFlutterPerformance
0 likes · 12 min read
How Flutter’s Engine Thread Model Boosts Mobile Performance
Java Architect Essentials
Java Architect Essentials
Jul 17, 2018 · Backend Development

Comprehensive List of Java Interview Topics and Questions

This article compiles a thorough collection of Java interview questions covering fundamentals, deep technical concepts, frameworks, system architecture, distributed systems, practical problem‑solving, soft skills, and the standards expected of a Java architect, while also providing guidance on further learning resources.

InterviewPerformance
0 likes · 9 min read
Comprehensive List of Java Interview Topics and Questions
Architects Research Society
Architects Research Society
Jul 17, 2018 · Frontend Development

Performance Issues and Mitigation Strategies for Salesforce Lightning Experience

This article outlines common geographic, device, browser, and Salesforce org configuration problems that cause slow page loads in Lightning Experience and provides practical mitigation steps such as network latency testing, browser benchmarking, disabling unnecessary plugins, and optimizing Visualforce and Lightning page designs.

BrowserLightning ExperienceOptimization
0 likes · 6 min read
Performance Issues and Mitigation Strategies for Salesforce Lightning Experience
Tencent Music Tech Team
Tencent Music Tech Team
Jul 13, 2018 · Mobile Development

Analysis and Solutions for a Memory Leak Caused by a Repeating Animation in iOS

The article explains how a repeating iOS animation caused a hidden memory leak by retaining its view controller through a strong CABasicAnimation delegate and a performSelector‑afterDelay timer, and shows how replacing the delegate‑based animation with a CAKeyframeAnimation/CAAnimationGroup and using weak references or cancelling pending selectors eliminates the retain cycle.

CAAnimationObjective‑CPerformance
0 likes · 10 min read
Analysis and Solutions for a Memory Leak Caused by a Repeating Animation in iOS
Meituan Technology Team
Meituan Technology Team
Jul 12, 2018 · Mobile Development

Automated Page Speed Measurement Plugin for Android Apps

The Meituan Android team built an automated, non‑intrusive page‑speed plugin that injects SDK calls at compile time via a Gradle Transform, measures cold‑start, first render, network request and second render for Activities and Fragments—including ViewPager lazy loading—fetches real‑time config from a server and reports metrics to their monitoring platform.

AOPAndroidGradle
0 likes · 22 min read
Automated Page Speed Measurement Plugin for Android Apps
MaGe Linux Operations
MaGe Linux Operations
Jul 7, 2018 · Fundamentals

8 Powerful Ways to Concatenate Strings in Python

This guide reviews eight common Python string concatenation techniques—including the plus operator, commas, direct literals, percent formatting, format(), f-strings, join(), and the multiplication operator—highlighting their syntax, use cases, performance considerations, and recommendations for small versus large string assemblies.

JOINPerformancef-string
0 likes · 4 min read
8 Powerful Ways to Concatenate Strings in Python
MaGe Linux Operations
MaGe Linux Operations
Jul 6, 2018 · Fundamentals

7 Proven Python Tricks to Boost Performance and Save Resources

Learn seven practical Python optimization techniques—from using local variables and reducing function calls to leveraging generators and pre-compiling code—that can noticeably improve execution speed, lower memory usage, and make your scripts more efficient.

OptimizationPerformancePython
0 likes · 6 min read
7 Proven Python Tricks to Boost Performance and Save Resources
Meituan Technology Team
Meituan Technology Team
Jul 5, 2018 · Mobile Development

Analyzing Kotlin Hidden Costs and Building a Custom Lint Tool

The article examines Kotlin’s hidden runtime overheads—such as companion‑object constants, default synchronized lazy delegates, boxing‑prone array types, and temporary progression objects in loops—and describes how the author built a custom Android Lint plugin (KLint) that parses Kotlin files, defines detectors, integrates with Gradle and IDE, and enforces performance‑aware coding standards through CI checks.

AndroidKotlinPerformance
0 likes · 14 min read
Analyzing Kotlin Hidden Costs and Building a Custom Lint Tool
MaGe Linux Operations
MaGe Linux Operations
Jul 4, 2018 · Backend Development

Why Quora Chose Python Over PHP and Other Languages

Quora’s founders explain why they rejected PHP and other languages in favor of Python, highlighting its ecosystem, readability, performance‑boosting tools like Tornado and PyPy, and the strategic decision to write critical code in C++ while relying on comprehensive testing for type safety.

PerformancePythonlanguage choice
0 likes · 6 min read
Why Quora Chose Python Over PHP and Other Languages
Qunar Tech Salon
Qunar Tech Salon
Jul 4, 2018 · Backend Development

Performance Optimization of Qunar's ATPCO International Ticket Pricing System

This article details how Qunar's ATPCO international fare system was analyzed and optimized through performance profiling, application of Little's Law and Amdahl's Law, code refactoring, cache replacement, pruning of search space, and concurrency improvements such as ForkJoinPool to dramatically reduce response times and CPU pressure.

Amdahl's LawConcurrencyLittle's Law
0 likes · 12 min read
Performance Optimization of Qunar's ATPCO International Ticket Pricing System
Xianyu Technology
Xianyu Technology
Jun 29, 2018 · Mobile Development

Xianyu’s Experience with Flutter: Adoption, Challenges, and Benefits

Xianyu became the first Chinese app to adopt Flutter after its 2018 preview, choosing it for performance and a single codebase, and used it to solve hybrid integration, page‑stack, video and component issues while overcoming Armv7, font, ICU and memory challenges, achieving comparable or better performance, modest APK growth, and a stable production page, though dynamic updates remain limited, prompting continued collaboration with Google.

FlutterPerformancecross-platform
0 likes · 6 min read
Xianyu’s Experience with Flutter: Adoption, Challenges, and Benefits
Java Architect Essentials
Java Architect Essentials
Jun 28, 2018 · Frontend Development

Should Small Teams Adopt Front‑End Separation? Lessons from MVC to Node.js

From legacy JSP‑based MVC to semi‑separated Ajax‑driven pages and finally fully separated front‑end architectures using Node.js, this article examines each stage’s structure, advantages, and drawbacks, arguing that small‑to‑mid‑size companies must weigh resource constraints, performance, and maintenance before fully embracing front‑end separation.

AJAXMVCNode.js
0 likes · 12 min read
Should Small Teams Adopt Front‑End Separation? Lessons from MVC to Node.js
Efficient Ops
Efficient Ops
Jun 26, 2018 · Fundamentals

Why a Simple Regex Can Crash Your CPU: Understanding NFA Backtracking

The article examines a Java URL‑validation regex that caused near‑100% CPU usage, explains how Java's NFA engine and backtracking lead to catastrophic performance, and shows how to rewrite the pattern with possessive quantifiers and proper character classes to eliminate the issue.

JavaNFAPerformance
0 likes · 12 min read
Why a Simple Regex Can Crash Your CPU: Understanding NFA Backtracking
Ctrip Technology
Ctrip Technology
Jun 19, 2018 · Frontend Development

Understanding React Fiber: Architecture, Scheduling, and Reconciliation

This article explains why React Fiber was introduced, describes its core concepts such as the fiber tree, work‑in‑progress tree, double buffering, priority scheduling, and lifecycle changes, and summarizes the new capabilities it brings to improve UI performance and responsiveness.

FiberPerformanceReAct
0 likes · 10 min read
Understanding React Fiber: Architecture, Scheduling, and Reconciliation
Tencent Cloud Developer
Tencent Cloud Developer
Jun 19, 2018 · Backend Development

Understanding Catastrophic Backtracking in Java Regular Expressions and How to Fix It

During a production incident a Java service’s URL‑validation regex caused near‑100 % CPU due to catastrophic backtracking from a greedy domain pattern, which was fixed by adding missing characters to the final class and converting the domain part to a possessive or atomic quantifier, preventing exponential matching.

JavaNFAPerformance
0 likes · 13 min read
Understanding Catastrophic Backtracking in Java Regular Expressions and How to Fix It
ITPUB
ITPUB
Jun 17, 2018 · Databases

MySQL 8 vs PostgreSQL 10: Which Database Wins the Showdown?

An in‑depth comparison of MySQL 8 and PostgreSQL 10 examines feature parity, storage architecture, indexing, memory usage, replication, update overhead, and garbage collection, highlighting how recent improvements narrow the gap and offering guidance on choosing the right database for specific workloads.

Database ComparisonMySQLPerformance
0 likes · 12 min read
MySQL 8 vs PostgreSQL 10: Which Database Wins the Showdown?
ITPUB
ITPUB
Jun 14, 2018 · Databases

Mastering Oracle Partitioning: Concepts, History, Best Practices & New Features

This article presents a comprehensive overview of Oracle partitioning, covering basic concepts, the evolution of partition features across versions, practical best‑practice scenarios, and the latest enhancements in Oracle 12c, 12.2, and 18c that improve performance, manageability, and availability.

DatabaseOraclePerformance
0 likes · 17 min read
Mastering Oracle Partitioning: Concepts, History, Best Practices & New Features
Architecture Digest
Architecture Digest
Jun 14, 2018 · Frontend Development

Key Concerns and Challenges for Front‑End Architecture

The article examines front‑end architecture by highlighting its primary focus on user experience, performance, reliability, tooling choices, and engineering difficulties such as monitoring and caching, arguing that front‑end architects must balance these factors just like their back‑end counterparts.

PerformanceToolingarchitecture
0 likes · 6 min read
Key Concerns and Challenges for Front‑End Architecture
Didi Tech
Didi Tech
Jun 8, 2018 · Artificial Intelligence

DiDi PS: High-Performance RDMA-Based Parameter Server for Distributed Deep Learning

DiDi PS is a custom RDMA‑based parameter server that uses a ring topology and optimized ibverbs communication to dramatically accelerate distributed deep‑learning training, consistently outperforming OpenMPI, NCCL2, TensorFlow’s built‑in RDMA, and Horovod while providing more stable and scalable synchronization for massive data workloads.

AllreduceDistributed TrainingPerformance
0 likes · 10 min read
DiDi PS: High-Performance RDMA-Based Parameter Server for Distributed Deep Learning
Suning Technology
Suning Technology
Jun 7, 2018 · Mobile Development

Mastering Weex: Build High‑Performance Cross‑Platform Mobile Apps with Vue

This article introduces Weex as a simple, high‑performance cross‑platform solution that leverages Vue and W3C standards to build native mobile apps, explains its architecture, page structure, components, layout, lifecycle, and shares practical experiences and best practices for integrating Weex in mobile office applications.

PerformanceVuemobile development
0 likes · 13 min read
Mastering Weex: Build High‑Performance Cross‑Platform Mobile Apps with Vue
Alibaba Cloud Developer
Alibaba Cloud Developer
Jun 6, 2018 · Mobile Development

Mastering Flutter: Rendering Pipeline and Widget Tree for High‑Performance Apps

This article from the Xianyu tech team explains Flutter’s architecture, covering the creation and management of the widget, element, and render object trees, the three‑stage rendering pipeline (build, layout, paint), performance‑optimizing techniques, state lifecycle, data flow, and practical tips for building efficient cross‑platform mobile applications.

FlutterPerformanceWidget Tree
0 likes · 15 min read
Mastering Flutter: Rendering Pipeline and Widget Tree for High‑Performance Apps
ITPUB
ITPUB
Jun 3, 2018 · Big Data

Spark vs Hadoop: Which Distributed System Fits Your Data Needs?

An in‑depth comparison of Hadoop and Spark examines their architectures, performance, cost, security, and machine‑learning capabilities, helping readers decide which open‑source distributed processing platform best matches their batch, streaming, and analytical workloads.

Big DataCostHadoop
0 likes · 13 min read
Spark vs Hadoop: Which Distributed System Fits Your Data Needs?
58 Tech
58 Tech
Jun 1, 2018 · Backend Development

Design and Implementation of Real-Time Indexing in 58.com’s ESearch Search Engine

This article explains how 58.com’s in‑house C++ search kernel ESearch was architected to provide second‑level real‑time indexing, high‑concurrency low‑latency querying, flexible ranking models, and efficient storage structures for billions of daily queries across massive classified data.

C++Performancebackend
0 likes · 13 min read
Design and Implementation of Real-Time Indexing in 58.com’s ESearch Search Engine
ITPUB
ITPUB
May 31, 2018 · Databases

Mastering Redis: Why It’s Fast, Common Pitfalls, and How to Solve Them

This article provides a comprehensive review of Redis, covering why it’s used, its performance advantages, single‑threaded speed, data types and use cases, expiration policies, memory eviction strategies, consistency challenges, and practical solutions for cache penetration, avalanche, and concurrent key competition.

ConcurrencyData TypesPerformance
0 likes · 16 min read
Mastering Redis: Why It’s Fast, Common Pitfalls, and How to Solve Them
Qunar Tech Salon
Qunar Tech Salon
May 29, 2018 · Backend Development

Async Mutex: Eliminating Blocking in High‑Performance Concurrent Java Programs

This article analyses the performance challenges of high‑concurrency Java applications, explains how misuse of atomic operations and blocking degrade throughput, introduces an asynchronous monitor concept and a concrete AsyncMutex implementation, and presents experimental results showing its scalability advantages over traditional ReentrantLock‑based locking.

ConcurrencyJavaLock-Free
0 likes · 15 min read
Async Mutex: Eliminating Blocking in High‑Performance Concurrent Java Programs
21CTO
21CTO
May 28, 2018 · Operations

Git Server CPU Spike After Migration: Insights into SSHD, XFS Locks, and PAM

After moving a Git server to a new data center, CPU sys time surged due to thousands of sshd processes contending on XFS read‑write locks while repeatedly reading a massive /var/log/btmp file caused by PAM postlogin, and the analysis shows how perf, strace and log rotation can resolve the issue.

CPUPAMPerformance
0 likes · 11 min read
Git Server CPU Spike After Migration: Insights into SSHD, XFS Locks, and PAM
Full-Stack Internet Architecture
Full-Stack Internet Architecture
May 27, 2018 · Databases

Best Practices for Using Alibaba Cloud Redis: Key Design, Command Usage, Client Configuration, and Tools

This article outlines Alibaba Cloud Redis development guidelines, covering key naming conventions, value design, command usage, client configuration, lifecycle management, and recommended tools, providing practical recommendations to avoid common pitfalls, improve performance, and ensure reliable operation of Redis in production environments.

Alibaba CloudDatabaseKey Design
0 likes · 9 min read
Best Practices for Using Alibaba Cloud Redis: Key Design, Command Usage, Client Configuration, and Tools
JD Retail Technology
JD Retail Technology
May 24, 2018 · Frontend Development

Understanding PWA Caching: Principles, Performance Benefits, and Strategies

This article explains why traditional H5 pages perform poorly compared to native apps, introduces Progressive Web Apps (PWA) as a solution, details how service workers enable offline caching, presents real‑world performance comparisons, and reviews common cache strategies such as cache‑first, network‑first, stale‑while‑revalidate, cache‑only, and network‑only.

Cache strategiesPWAPerformance
0 likes · 7 min read
Understanding PWA Caching: Principles, Performance Benefits, and Strategies
Alibaba Cloud Developer
Alibaba Cloud Developer
May 23, 2018 · Mobile Development

How Flutter Manages Memory: Dart Runtime, Image & FlutterView Insights

This article explores Flutter's memory management, detailing the Dart runtime's generational GC, comparing Image widget memory usage across Android versions, and evaluating the impact of reusing or not reusing FlutterView on Java and native memory consumption, with practical test results and optimization tips.

DARTFlutterPerformance
0 likes · 10 min read
How Flutter Manages Memory: Dart Runtime, Image & FlutterView Insights
360 Tech Engineering
360 Tech Engineering
May 22, 2018 · Databases

Understanding Redis Rehash Mechanism and Implementation

This article explains how Redis uses a dual‑hashtable structure and a progressive rehash process to handle hash collisions, detailing the rehash conditions, migration steps, and performance implications for in‑memory key‑value storage.

Hash TableIn-Memory DatabasePerformance
0 likes · 6 min read
Understanding Redis Rehash Mechanism and Implementation
MaGe Linux Operations
MaGe Linux Operations
May 19, 2018 · Fundamentals

How a Four‑Year Hunt Fixed a Hidden Python GIL Race Condition

The article recounts a four‑year investigation that uncovered and repaired a subtle race‑condition bug in Python's Global Interpreter Lock, detailing the bug's origin, the implemented fixes, performance testing, and the decision to make the GIL creation unconditional in Python 3.7.

CPythonGILPerformance
0 likes · 10 min read
How a Four‑Year Hunt Fixed a Hidden Python GIL Race Condition
Meituan Technology Team
Meituan Technology Team
May 17, 2018 · Information Security

Performance Optimization and Monitoring of Kerberos KDC Service

The article examines Kerberos KDC performance issues on Meituan‑Dianping’s data platform, showing that PREAUTH halves throughput while RAID10 has little effect, and that a single‑CPU core limits QPS; deploying 40 processes and disabling PREAUTH raises throughput over tenfold, and a lock‑free shared‑memory monitoring module with the kstat tool provides real‑time metrics for troubleshooting.

AuthenticationKDCKerberos
0 likes · 17 min read
Performance Optimization and Monitoring of Kerberos KDC Service
Qunar Tech Salon
Qunar Tech Salon
May 16, 2018 · Backend Development

Performance Analysis and Optimization of Synchronized Reflection Calls in a Java Backend Service

The article investigates a high‑traffic Java backend issue caused by synchronized reflection calls, analyzes thread‑blocking stack traces, demonstrates the problematic code, and presents a compile‑time PropertyDescriptor optimization that eliminates runtime locking, resulting in significant latency improvements and a deeper understanding of JVM lock mechanisms.

ConcurrencyJVMPerformance
0 likes · 14 min read
Performance Analysis and Optimization of Synchronized Reflection Calls in a Java Backend Service
Huawei Cloud Developer Alliance
Huawei Cloud Developer Alliance
May 14, 2018 · Backend Development

Optimizing ServiceComb Communication: Reactive vs Sync Thread Models

This article explains how ServiceComb builds on Vert.x to support both reactive and synchronous communication modes, details the thread models for single and multiple connections, presents performance improvements through CAS queues and multi‑connection setups, and outlines flexible thread‑pool strategies for microservice providers and consumers.

MicroservicesPerformancereactive
0 likes · 14 min read
Optimizing ServiceComb Communication: Reactive vs Sync Thread Models
Meituan Technology Team
Meituan Technology Team
May 10, 2018 · Backend Development

Design and Implementation of a Real‑Time Advertising Index System at Meituan‑Dianping

Meituan‑Dianping built a custom C++11 real‑time advertising index featuring a hierarchical model, lock‑free three‑layer architecture, specialized memory allocators, and forward/inverted indexes to achieve millisecond updates, high throughput, and scalability for search ads, with plans for Java integration and SQL support.

C++IndexingPerformance
0 likes · 21 min read
Design and Implementation of a Real‑Time Advertising Index System at Meituan‑Dianping
Programmer DD
Programmer DD
May 6, 2018 · Backend Development

Why Spring Boot 2 Picks HikariCP: Speed, Simplicity, and Reliability Explained

This article compiles and translates key information about HikariCP, detailing why Spring Boot 2 adopts it as the default JDBC pool, comparing its performance and stability against BoneCP, C3P0, Tomcat and Druid, and providing practical configuration steps for quick integration.

Backend DevelopmentHikariCPJava
0 likes · 13 min read
Why Spring Boot 2 Picks HikariCP: Speed, Simplicity, and Reliability Explained
Xianyu Technology
Xianyu Technology
May 6, 2018 · Mobile Development

Exploring Flutter Memory Management and Image Handling on Android

The article examines Flutter’s memory architecture, compares its Image widget’s graphics‑memory usage to Android ImageView’s Java and native heap behavior across OS versions, and evaluates FlutterView integration strategies—showing reuse saves native memory and offering a pre‑render trick to reduce first‑frame latency.

AndroidDARTFlutterView
0 likes · 11 min read
Exploring Flutter Memory Management and Image Handling on Android
21CTO
21CTO
Apr 27, 2018 · Backend Development

How Stack Overflow Achieves Lightning‑Fast Pagination

This article explains the sophisticated pagination system used by Stack Overflow, covering offset‑based queries, a custom Tag Engine, database joins, in‑memory sorting, and caching techniques that together deliver rapid page navigation even over billions of records.

DatabasePaginationPerformance
0 likes · 6 min read
How Stack Overflow Achieves Lightning‑Fast Pagination
JD Tech
JD Tech
Apr 27, 2018 · Frontend Development

Redesigning JD.com Homepage: Architecture, Performance, and Frontend Engineering with Nerv and Athena

This article recounts the four‑month redesign of JD.com’s homepage, detailing the migration from jQuery + SeaJS to the Nerv framework, the introduction of the Athena engineering platform, performance and experience optimizations such as code splitting, lazy loading, IE8 compatibility, and the monitoring and automation practices that ensure stability and scalability.

Code SplittingPerformanceathena
0 likes · 24 min read
Redesigning JD.com Homepage: Architecture, Performance, and Frontend Engineering with Nerv and Athena
ITPUB
ITPUB
Apr 25, 2018 · Databases

Optimizing Large-Scale Joins with Oracle Temporary Tables: Strategies & Pitfalls

Facing a 20‑million‑row master table and millions of rows in up to ten child tables, the article examines the inefficiencies of repeated IN‑clause queries and presents three alternative strategies—including a single‑SQL join, a UNION ALL view, and the use of global temporary tables—detailing their trade‑offs and experimental results.

JOINOraclePerformance
0 likes · 10 min read
Optimizing Large-Scale Joins with Oracle Temporary Tables: Strategies & Pitfalls