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Watermelon Video Tech Team
Watermelon Video Tech Team
Dec 14, 2020 · Mobile Development

Tailor: An Open‑Source Android Memory Snapshot Trimming and Compression Tool for OOM Governance

Tailor is an open‑source Android memory‑snapshot trimming and compression tool developed by the Xigua Video team that dramatically reduces OOM occurrences by over 95% through efficient snapshot cropping, zlib compression, and seamless integration with the dump process, while preserving essential debugging information.

AndroidHprofOOM
0 likes · 17 min read
Tailor: An Open‑Source Android Memory Snapshot Trimming and Compression Tool for OOM Governance
Meituan Technology Team
Meituan Technology Team
Dec 10, 2020 · Operations

Optimizing C++ Build Times in Large-Scale Projects: Analysis and Practices

By systematically analyzing compilation stages and applying a mix of generic tactics—parallel and distributed builds, precompiled headers, ccache, C++20 modules, include pruning—and code‑level changes such as forward declarations, external templates, and replacing heavy Boost headers, the Meituan Search & NLP team cut a 20‑minute C++ build to about 100 seconds, a 70 % reduction, and instituted a compile‑fingerprint system to guard against regressions.

C++compilationperformance
0 likes · 23 min read
Optimizing C++ Build Times in Large-Scale Projects: Analysis and Practices
Sohu Tech Products
Sohu Tech Products
Dec 9, 2020 · Frontend Development

Essential JavaScript Performance Optimization Techniques

This article presents a comprehensive set of JavaScript performance optimization techniques—including removing dead code, leveraging caching, preventing memory leaks, breaking loops early, minimizing variable calculations, reducing DOM access, compressing and minifying files, using throttling/debouncing, avoiding delete, employing async code, code splitting, async/defer attributes, and Web Workers—to help developers deliver faster, more efficient web applications across diverse devices.

performanceweb development
0 likes · 13 min read
Essential JavaScript Performance Optimization Techniques
WeDoctor Frontend Technology
WeDoctor Frontend Technology
Dec 8, 2020 · Frontend Development

How React’s Fiber Scheduler Breaks Down Tasks for Smooth Rendering

This article explains React 16’s new Fiber architecture and its cooperative scheduling algorithm, showing how large diff tasks are split into small asynchronous units using priority queues and min‑heap structures, with code examples, performance visuals, and insights into real‑time and delayed task handling.

FiberHeapReAct
0 likes · 20 min read
How React’s Fiber Scheduler Breaks Down Tasks for Smooth Rendering
NetEase Media Technology Team
NetEase Media Technology Team
Dec 8, 2020 · Operations

Comprehensive Online Load‑Testing and Stability Assurance Framework

The stability‑assurance squad built an online load‑testing framework that injects global TraceIds via a Java‑agent, records real‑traffic, routes test writes to shadow databases and caches, enforces automatic stop‑rules, and provides a UI platform, reducing cost, improving capacity insight, and enabling safe fault‑injection drills.

Java AgentStabilitydistributed tracing
0 likes · 12 min read
Comprehensive Online Load‑Testing and Stability Assurance Framework
ITPUB
ITPUB
Dec 7, 2020 · Databases

Why Redis Is So Fast: Inside Its Memory Design and Data Structures

This article explains how Redis achieves high performance by using an in‑memory architecture, specialized data structures such as SDS, doubly linked lists, ziplists and skip‑lists, efficient encoding strategies, and a single‑threaded I/O multiplexing model that eliminates costly context switches.

BackendData StructuresIn-Memory Database
0 likes · 12 min read
Why Redis Is So Fast: Inside Its Memory Design and Data Structures
Java Architecture Diary
Java Architecture Diary
Dec 7, 2020 · Backend Development

Speed Up Spring Boot Startup with Actuator’s Startup Endpoint

This article explains how to use Spring Boot 2.4's actuator startup endpoint to monitor and analyze application initialization time, offering practical steps, configuration examples, code snippets, and a test case to identify and optimize slow components such as database pools and custom beans.

performancespring-bootstartup-monitoring
0 likes · 6 min read
Speed Up Spring Boot Startup with Actuator’s Startup Endpoint
Programmer DD
Programmer DD
Dec 6, 2020 · Databases

Master Redis Interview: Persistence, Caching Strategies, Clustering & More

This comprehensive guide covers essential Redis interview topics, including persistence mechanisms (RDB and AOF), cache challenges such as avalanche, penetration and pre‑warming, data types and their use cases, internal structures, eviction policies, single‑thread performance, clustering solutions, distributed locking, transactions, and best practices for high‑traffic environments.

CachingPersistenceRedis
0 likes · 25 min read
Master Redis Interview: Persistence, Caching Strategies, Clustering & More
Architects' Tech Alliance
Architects' Tech Alliance
Dec 4, 2020 · Databases

Comparison of MySQL and PostgreSQL: Features, Advantages, and Use Cases

This article provides a detailed comparison of MySQL and PostgreSQL, covering licensing, ACID compliance, SQL standard support, replication models, concurrency control, performance characteristics, high‑availability solutions, external data integration, storage engines, and overall strengths and weaknesses to help readers choose the most suitable open‑source database for their scenarios.

MySQLPostgreSQLdatabase comparison
0 likes · 12 min read
Comparison of MySQL and PostgreSQL: Features, Advantages, and Use Cases
ITFLY8 Architecture Home
ITFLY8 Architecture Home
Dec 3, 2020 · Databases

Essential MySQL Design & Development Standards for Reliable Databases

This guide outlines comprehensive MySQL best‑practice standards covering naming conventions, storage engine selection, charset usage, table and column comments, size limits, partitioning, hot‑cold data separation, index design, SQL coding rules, and operational safeguards to ensure performant, maintainable, and secure database systems.

Best PracticesDatabase DesignMySQL
0 likes · 22 min read
Essential MySQL Design & Development Standards for Reliable Databases
Sohu Tech Products
Sohu Tech Products
Dec 2, 2020 · Frontend Development

Using Chrome DevTools to Inspect CSS, Edit Pages, and Analyze Web Performance

This guide walks through Chrome DevTools features—including inspecting pseudo‑class styles, temporarily toggling classes, making pages editable, checking placeholder styles, testing performance and SEO, viewing network details, examining event handlers, searching code globally, recording runtime performance, using rendering diagnostics, and exploring application storage—providing step‑by‑step instructions with code snippets and visual examples.

Chrome DevToolsDebuggingperformance
0 likes · 3 min read
Using Chrome DevTools to Inspect CSS, Edit Pages, and Analyze Web Performance
IT Architects Alliance
IT Architects Alliance
Dec 2, 2020 · Operations

How to Diagnose and Optimize Business System Performance Issues

This article outlines a comprehensive process for identifying root causes of performance bottlenecks in production business systems, covering hardware, database, middleware, JVM settings, code inefficiencies, and monitoring tools, and provides practical optimization techniques for each layer.

DatabaseJVMOptimization
0 likes · 16 min read
How to Diagnose and Optimize Business System Performance Issues
Programmer DD
Programmer DD
Dec 2, 2020 · Backend Development

How Kafka Uses a Timing Wheel for Efficient Timeout Handling

Kafka handles many requests that require asynchronous processing or waiting for conditions by attaching a timeout parameter; if the condition isn’t met within the timeout, Kafka returns a timeout response, and it implements this efficiently using a hierarchical Timing Wheel data structure that offers O(1) insertion and fast expiration checks.

BackendKafkaScala
0 likes · 12 min read
How Kafka Uses a Timing Wheel for Efficient Timeout Handling
Liangxu Linux
Liangxu Linux
Dec 1, 2020 · Fundamentals

How Much CPU Time Does a Linux Context Switch Really Cost?

This article measures the CPU time consumed by Linux process and thread context switches, explains the underlying operations, compares simple token‑passing tests with lmbench benchmarks, and shows how to monitor and interpret switch statistics on a production server.

Linuxbenchmarkcontext switch
0 likes · 13 min read
How Much CPU Time Does a Linux Context Switch Really Cost?
Programmer DD
Programmer DD
Dec 1, 2020 · Backend Development

Mastering Zero-Copy in Java: Boost I/O Performance with NIO, Netty & Kafka

Zero-copy techniques eliminate unnecessary data copying between user and kernel space, dramatically improving I/O performance; this article explains core concepts, Java NIO’s MappedByteBuffer and DirectByteBuffer, channel-to-channel transfers, Netty’s composite buffers, and how frameworks like Kafka and RocketMQ leverage zero-copy.

JavaNIONetty
0 likes · 12 min read
Mastering Zero-Copy in Java: Boost I/O Performance with NIO, Netty & Kafka
ITFLY8 Architecture Home
ITFLY8 Architecture Home
Dec 1, 2020 · Databases

Why Redis Dominates Modern Caching: Features, Architecture, and Best Practices

Redis, an in‑memory C‑language database, offers ultra‑fast read/write speeds, rich data structures, persistence, clustering, and multi‑threaded I/O, making it ideal for distributed caching, locks, queues, and more; this guide explains its fundamentals, comparisons with Memcached, data types, eviction policies, and operational best practices.

CacheData StructuresDatabase
0 likes · 36 min read
Why Redis Dominates Modern Caching: Features, Architecture, and Best Practices
Code Ape Tech Column
Code Ape Tech Column
Nov 30, 2020 · Backend Development

Master Redis: Persistence, Caching Pitfalls, Clustering & Performance Tips

This article provides a comprehensive guide to Redis for interview preparation, covering persistence mechanisms, common caching challenges such as avalanche and penetration, data types and their use cases, internal structures, expiration policies, single‑threaded performance, clustering options, distributed locking, and best‑practice solutions.

CachingData TypesPersistence
0 likes · 27 min read
Master Redis: Persistence, Caching Pitfalls, Clustering & Performance Tips
IT Architects Alliance
IT Architects Alliance
Nov 29, 2020 · Backend Development

Why High Performance Makes Software Architecture So Complex—and How to Tame It

The article analyzes how the relentless pursuit of high performance drives both single‑machine and cluster‑level architectural complexity, explaining the evolution from batch processing to multi‑core CPUs, the trade‑offs of processes, threads, SMP/NUMA/MPP, and the challenges of task allocation and decomposition in large‑scale systems.

BackendDistributed SystemsScalability
0 likes · 16 min read
Why High Performance Makes Software Architecture So Complex—and How to Tame It
Java Architect Essentials
Java Architect Essentials
Nov 27, 2020 · Backend Development

16 Java Coding Best Practices for Performance and Clean Code

This article presents sixteen practical Java coding best‑practice guidelines—including avoiding ‘where 1=1’ in MyBatis, using entrySet for map iteration, preferring Collection.isEmpty(), pre‑sizing collections, employing StringBuilder, leveraging Set for contains checks, static initialization blocks, and other tips—to improve performance, readability, and safety of backend applications.

BackendBest PracticesCode Optimization
0 likes · 18 min read
16 Java Coding Best Practices for Performance and Clean Code
Laravel Tech Community
Laravel Tech Community
Nov 27, 2020 · Backend Development

Highlights of PHP 8.0: JIT and Major New Features

PHP 8.0 introduces a suite of major enhancements—including named arguments, union types, attributes, constructor property promotion, match expressions, null‑safe operator, and especially JIT compilation—aimed at improving performance, type safety, and overall language consistency.

JITPHP8performance
0 likes · 3 min read
Highlights of PHP 8.0: JIT and Major New Features
Alibaba Terminal Technology
Alibaba Terminal Technology
Nov 27, 2020 · Frontend Development

What Chrome 87 Brings: Major Performance Boosts and New Web APIs

Chrome 87 (M87) introduced a suite of performance‑focused enhancements and new web APIs—including tag throttling, occlusion tracking, forward/back cache, WebAuthn debugging, camera PTZ control, range‑request support in service workers, and a font‑access API—significantly improving browser efficiency and developer capabilities.

Camera PTZChromeFont Access
0 likes · 8 min read
What Chrome 87 Brings: Major Performance Boosts and New Web APIs
php Courses
php Courses
Nov 27, 2020 · Backend Development

Phoronix PHP 8 Performance Benchmark Report Highlights JIT Gains

Phoronix’s benchmark of PHP 8 (built from the latest Git source) compares it with previous PHP releases, showing modest gains for the stable version but a dramatic 92% speed increase when JIT is enabled, while also revealing mixed results across different test suites due to I/O bottlenecks.

JITPHP8benchmark
0 likes · 3 min read
Phoronix PHP 8 Performance Benchmark Report Highlights JIT Gains
Alibaba Cloud Native
Alibaba Cloud Native
Nov 26, 2020 · Cloud Computing

How Gaode Scaled Serverless to Handle 2 Million Calls per Minute During China’s Travel Festival

During the 2020 "Golden Week" travel festival, Gaode Maps leveraged Alibaba Cloud Serverless to sustain nearly two million function invocations per minute, achieving over 99.99% success rate, sub‑60 ms latency, and demonstrating significant gains in efficiency, elasticity, cost savings, and observability for large‑scale map services.

Cloud ComputingScalabilityServerless
0 likes · 9 min read
How Gaode Scaled Serverless to Handle 2 Million Calls per Minute During China’s Travel Festival
Liangxu Linux
Liangxu Linux
Nov 25, 2020 · Operations

Essential Linux Shell Commands for System Monitoring and Troubleshooting

This guide compiles dozens of practical Linux shell commands for deleting zero‑byte files, inspecting processes, checking CPU, memory, disk usage, and more, plus a collection of useful regular expressions for matching Chinese characters, emails, URLs, IPs, and other patterns.

Linuxperformanceshell
0 likes · 14 min read
Essential Linux Shell Commands for System Monitoring and Troubleshooting
Architects' Tech Alliance
Architects' Tech Alliance
Nov 25, 2020 · Fundamentals

In‑Depth Look at AMD’s Zen 3 Core Architecture and Performance

The article provides a comprehensive technical analysis of AMD’s Zen 3 (Ryzen 5000) microarchitecture, covering its chiplet layout, cache hierarchy, front‑end redesign, integer and floating‑point units, load/store improvements, security features, and overall performance gains compared with Zen 2.

AMDCPU architectureChiplet
0 likes · 13 min read
In‑Depth Look at AMD’s Zen 3 Core Architecture and Performance
macrozheng
macrozheng
Nov 24, 2020 · Backend Development

Fastest & Safest HashMap Traversal: Compare Java 8 Streams, Lambdas, and Iterators

This article examines the four major HashMap traversal techniques—Iterator, for‑each loops, Lambda expressions, and Streams API—detailing seven concrete implementations, benchmarking their performance with JMH, analyzing generated bytecode, and evaluating safety when modifying collections during iteration, ultimately recommending the most efficient and secure approaches.

HashMapJavaStreams
0 likes · 19 min read
Fastest & Safest HashMap Traversal: Compare Java 8 Streams, Lambdas, and Iterators
Top Architect
Top Architect
Nov 24, 2020 · Databases

SQL Query Optimization Rules and Best Practices

This article presents five practical rules for writing efficient SQL queries—including using precise WHERE clauses, creating appropriate indexes, avoiding costly subqueries, replacing OFFSET‑based pagination with key‑based limits, and understanding the logical execution order of SQL clauses—to help developers improve database performance across major relational systems.

DatabaseIndexesperformance
0 likes · 14 min read
SQL Query Optimization Rules and Best Practices
DeWu Technology
DeWu Technology
Nov 23, 2020 · Backend Development

Understanding Cache: Concepts, Types, and Best Practices

Cache is a temporary storage layer that speeds data access by keeping frequently used items close to the processor, spanning hardware (CPU registers, multi‑level caches) to software (database, Redis, Memcached), and requires careful design to avoid penetration, breakdown, and consistency issues through techniques such as empty‑result caching, Bloom filters, pre‑warming, jittered expirations, logical refreshes, and multi‑level strategies.

BackendCacheData Consistency
0 likes · 12 min read
Understanding Cache: Concepts, Types, and Best Practices
Aikesheng Open Source Community
Aikesheng Open Source Community
Nov 20, 2020 · Databases

Optimizing a Slow MySQL 5.7 Query for Detecting Tables Without Primary or Unique Keys

This article examines why a MySQL 5.7 query that finds tables lacking primary or unique keys runs extremely slowly, demonstrates an experiment reproducing the issue, analyzes the optimizer's subquery rewrite, and shows how adding hints and materialization reduces execution time from over 16 seconds to under one second.

Information SchemaMySQLoptimizer hint
0 likes · 4 min read
Optimizing a Slow MySQL 5.7 Query for Detecting Tables Without Primary or Unique Keys
Top Architect
Top Architect
Nov 20, 2020 · Databases

Database Design and SQL Best‑Practice Guidelines

This article presents a comprehensive set of mandatory and recommended MySQL database standards—including table creation rules, SQL writing conventions, and index design practices—aimed at preventing improper schemas, reducing erroneous queries, and improving overall performance for backend development teams.

Database DesignIndexesMySQL
0 likes · 14 min read
Database Design and SQL Best‑Practice Guidelines
ITPUB
ITPUB
Nov 19, 2020 · Operations

10 Essential Linux Sysadmin Hacks to Boost Efficiency and Save Time

This article presents ten practical Linux system‑administration techniques—from ejecting a stuck DVD drive and resetting a frozen console to using screen sharing, SSH tunnels, bandwidth testing, and powerful command‑line scripts—each designed to streamline tasks, reduce downtime, and give administrators more free time.

LinuxSSHautomation
0 likes · 19 min read
10 Essential Linux Sysadmin Hacks to Boost Efficiency and Save Time
ITPUB
ITPUB
Nov 19, 2020 · Fundamentals

How HugePages Boost Database and Hadoop Performance on Linux

This article explains Linux HugePages, how to view and configure them, demonstrates code and Kubernetes examples, and details how larger memory pages reduce management overhead and lock memory to improve performance for memory‑intensive services like databases and Hadoop.

HadoopLinuxhugepages
0 likes · 10 min read
How HugePages Boost Database and Hadoop Performance on Linux
macrozheng
macrozheng
Nov 18, 2020 · Backend Development

Why MapStruct Is the Fastest Java Bean Mapper and How to Use It

This article introduces MapStruct, a compile‑time Java bean‑mapping framework, explains why it outperforms other mappers, shows how to configure Maven, define mapper interfaces, handle custom field mappings, and demonstrates its impressive runtime performance with practical code examples.

Javabean-mappingcode generation
0 likes · 13 min read
Why MapStruct Is the Fastest Java Bean Mapper and How to Use It
政采云技术
政采云技术
Nov 17, 2020 · Frontend Development

Writing High-Quality Maintainable Code: Asynchronous Optimization

This article explains the various asynchronous techniques in JavaScript—callback, Promise, async/await, and generator—compares them, and demonstrates practical patterns for handling callback hell, parallel and sequential async operations to write cleaner, more maintainable frontend code.

AsyncPromisecallback
0 likes · 10 min read
Writing High-Quality Maintainable Code: Asynchronous Optimization
php Courses
php Courses
Nov 17, 2020 · Backend Development

Performance‑Optimized PHP: Faster Alternatives for Duplicates, Random Selection, Alphanumeric Checks, and Substring Replacement

This article presents several PHP function alternatives that significantly improve execution speed—such as using array_keys + array_flip for duplicate removal, mt_rand for random selection, ctype_alnum for alphanumeric testing, and strtr for substring replacement—backed by benchmark results and practical tips.

ArrayStringbenchmark
0 likes · 6 min read
Performance‑Optimized PHP: Faster Alternatives for Duplicates, Random Selection, Alphanumeric Checks, and Substring Replacement
Taobao Frontend Technology
Taobao Frontend Technology
Nov 17, 2020 · Frontend Development

How We Cut Event Page Load Time by Up to 700 ms for Millions of Shoppers

This article details how a cross‑team performance‑optimization effort for Tmall/Taobao event pages redefined metrics, introduced full‑link visual timing, and applied pre‑rendering, data pre‑fetch, resource acceleration, and offline caching to shave 200‑700 ms off load times and boost instant‑open rates by 10‑14 % across Android and iOS devices.

Mobilee‑commerceperformance
0 likes · 18 min read
How We Cut Event Page Load Time by Up to 700 ms for Millions of Shoppers
21CTO
21CTO
Nov 16, 2020 · Fundamentals

Why Python Still Dominates and Where It Falls Short

The article examines Python's enduring popularity, highlighting its readability, rich ecosystem, and corporate adoption while also discussing its performance drawbacks, memory usage, GIL limitation, and challenges in mobile and high‑performance computing, before comparing it to emerging languages.

GILMobile DevelopmentPython
0 likes · 6 min read
Why Python Still Dominates and Where It Falls Short
Taobao Frontend Technology
Taobao Frontend Technology
Nov 16, 2020 · Frontend Development

Taobao Frontend Secrets Behind Double 11: FaaS, D2C, Performance Hacks

This article details how Taobao's frontend team tackled the double‑peak Double 11 challenge with massive workload, introduced Design‑to‑Code automation, Serverless FaaS, progressive hybrid apps, edge rendering and smart UI, achieving higher efficiency, stability, and conversion gains across the massive shopping festival.

Double11OptimizationServerless
0 likes · 20 min read
Taobao Frontend Secrets Behind Double 11: FaaS, D2C, Performance Hacks
Programmer DD
Programmer DD
Nov 16, 2020 · Backend Development

Is System.currentTimeMillis Really a Performance Bottleneck? A Deep Dive

This article investigates whether System.currentTimeMillis suffers from performance problems by examining custom caching implementations, analyzing common misconceptions, presenting benchmark data from both simple loops and JMH tests, and concluding that the native method is sufficiently fast for typical use cases.

JMHJavaSystem.currentTimeMillis
0 likes · 13 min read
Is System.currentTimeMillis Really a Performance Bottleneck? A Deep Dive
Programmer DD
Programmer DD
Nov 15, 2020 · Backend Development

How HikariCP’s FastList Outperforms ArrayList for Statement Management

This article examines HikariCP’s FastList, a custom list built on ArrayList that removes range checks and overrides key methods, explaining how these optimizations—such as a faster add operation, a new removeLast method, and unsupported bulk operations—boost the performance of the database connection pool.

FastListHikariCPJava
0 likes · 6 min read
How HikariCP’s FastList Outperforms ArrayList for Statement Management
JD Tech Talk
JD Tech Talk
Nov 13, 2020 · Mobile Development

Android App Startup Speed Optimization Practices at JD Finance

This article details JD Finance's Android mobile app startup speed optimization project, covering background, launch type analysis, measurement tools, and a series of practical improvements such as theme switching, application code reduction, thread management, network tweaks, and activity refinements that together cut launch time by up to 45%.

AndroidJD FinanceMobile Development
0 likes · 15 min read
Android App Startup Speed Optimization Practices at JD Finance
ITPUB
ITPUB
Nov 13, 2020 · Backend Development

Why Gradle Beats Maven: Installation, Wrapper, and Dependency Management Guide

This guide explains the drawbacks of Maven, the advantages of Gradle, how to install Gradle via binaries or package managers, use the Gradle wrapper, manage dependencies with concise scopes, configure mirrors and proxies, and leverage Gradle's speed, flexibility, and simplicity for Java projects.

Build ToolGradleJava
0 likes · 14 min read
Why Gradle Beats Maven: Installation, Wrapper, and Dependency Management Guide
Alibaba Terminal Technology
Alibaba Terminal Technology
Nov 13, 2020 · Frontend Development

How Serverless SSR Boosted Mobile H5 Performance for Alibaba's Feizhu Event

Facing slow page loads on weak mobile networks, Alibaba’s Feizhu marketing team adopted a Serverless Faas SSR solution combined with async rendering, reducing first‑screen time to under one second, improving offline capabilities, and addressing challenges like image flicker, titlebar support, and scaling performance.

Mobile H5SSRServerless
0 likes · 15 min read
How Serverless SSR Boosted Mobile H5 Performance for Alibaba's Feizhu Event
Architect's Tech Stack
Architect's Tech Stack
Nov 13, 2020 · Databases

How to Safely Scan Large Redis Keyspaces with the SCAN Command

This article explains why using the KEYS command on massive Redis datasets can cause service blockage, analyzes the underlying O(n) traversal cost, and demonstrates how the incremental SCAN command with cursor, MATCH, and COUNT options provides a non‑blocking alternative for efficiently iterating keys.

RedisSCANkey management
0 likes · 5 min read
How to Safely Scan Large Redis Keyspaces with the SCAN Command
Laravel Tech Community
Laravel Tech Community
Nov 12, 2020 · Backend Development

Design Considerations and Best Practices for API Gateways in Microservice Architectures

The article examines the challenges of exposing numerous backend microservices to clients and proposes using an API gateway to centralize traffic, handle authentication, rate limiting, protocol conversion, service discovery, performance optimization, and operational concerns, while also discussing the shift toward decentralized service‑mesh solutions.

MicroservicesService Meshapi-gateway
0 likes · 15 min read
Design Considerations and Best Practices for API Gateways in Microservice Architectures
dbaplus Community
dbaplus Community
Nov 10, 2020 · Operations

Essential Elasticsearch Tuning Tips for Performance and Stability

This guide consolidates practical Elasticsearch tuning techniques—from configuration file settings and system‑level adjustments to usage‑level optimizations—covering memory locking, discovery, fault detection, queue sizing, JVM heap, file descriptors, translog handling, bulk indexing, shard management, and best practices to achieve a stable, high‑performance cluster.

ClusterOperationsSearch
0 likes · 18 min read
Essential Elasticsearch Tuning Tips for Performance and Stability
JD.com Experience Design Center
JD.com Experience Design Center
Nov 10, 2020 · Fundamentals

Essential VR Design Principles: Boost Comfort, Usability, and Immersion

This guide outlines core VR design principles—including performance optimization, comfort, learnability, camera handling, UI placement, interaction feedback, motion safety, and environment setup—to help creators build immersive, user‑friendly virtual experiences while avoiding common pitfalls that cause discomfort or confusion.

UI guidelinesVR designcomfort
0 likes · 8 min read
Essential VR Design Principles: Boost Comfort, Usability, and Immersion
Xianyu Technology
Xianyu Technology
Nov 10, 2020 · Backend Development

Optimizing Data Synchronization for Xianyu IM: Layered Architecture and Performance Improvements

Xianyu IM’s data‑sync was re‑engineered by extracting a dedicated sync layer that uses domain‑based versioning, push‑pull hybrid buffering, and priority queues, decoupling business logic, eliminating redundant pushes, and achieving a 31% latency reduction and 35% traffic savings while enabling dynamic priority adjustments.

IMLayered Architecturedata synchronization
0 likes · 10 min read
Optimizing Data Synchronization for Xianyu IM: Layered Architecture and Performance Improvements
php Courses
php Courses
Nov 9, 2020 · Backend Development

Performance‑Optimized Alternatives to Common PHP Functions

This article presents faster PHP alternatives for removing duplicate array values, selecting random elements, testing alphanumeric strings, and replacing substrings, providing benchmark results that show significant speed improvements and discussing trade‑offs and additional coding tips for better script performance.

ArrayStringbenchmark
0 likes · 6 min read
Performance‑Optimized Alternatives to Common PHP Functions
Tencent Music Tech Team
Tencent Music Tech Team
Nov 6, 2020 · Mobile Development

Design and Implementation of an Incremental Compilation Component for Android Projects

The team built a low‑intrusion Gradle plugin that detects changed source and resource files, performs precise dependency analysis, leverages aapt2 for incremental resource compilation, and injects updated Dex and assets into the running app, cutting full Android builds from 418 seconds to 13 seconds and boosting daily developer productivity on large projects such as QQ Music.

AndroidBuild OptimizationDynamic Loading
0 likes · 23 min read
Design and Implementation of an Incremental Compilation Component for Android Projects
Full-Stack Internet Architecture
Full-Stack Internet Architecture
Nov 6, 2020 · Backend Development

Common Backend Performance Optimization Techniques

The article outlines practical backend performance optimization methods such as SQL tuning, eliminating duplicate calls, on‑demand queries, parallel execution, caching, asynchronous processing, JVM parameter tweaks, and horizontal scaling, providing code examples and actionable advice for developers.

AsynchronousCachingJVM tuning
0 likes · 8 min read
Common Backend Performance Optimization Techniques
IT Architects Alliance
IT Architects Alliance
Nov 5, 2020 · Industry Insights

How Do Massive Websites Scale? Key Architecture Patterns Unveiled

This article examines the defining traits of large‑scale web systems and walks through the step‑by‑step evolution of their architecture—from single‑server LAMP setups to multi‑layer, distributed, and automated designs—highlighting performance, availability, scalability, and security considerations.

CachingDistributed SystemsScalability
0 likes · 18 min read
How Do Massive Websites Scale? Key Architecture Patterns Unveiled
Architect
Architect
Nov 5, 2020 · Databases

Differences Between count(1), count(*), and count(column) in MySQL

This article explains the functional and performance differences among MySQL's count(1), count(*), and count(column) functions, illustrates how NULL handling varies, and provides a concrete example demonstrating their results and execution efficiency under different table schemas.

COUNTDatabaseMySQL
0 likes · 5 min read
Differences Between count(1), count(*), and count(column) in MySQL
Architects Research Society
Architects Research Society
Nov 5, 2020 · Frontend Development

Comparative Analysis of React, Angular, and Vue Frameworks

This article provides a detailed comparison of the three major frontend frameworks—React, Angular, and Vue—covering their design principles, strengths, weaknesses, performance benchmarks, popularity, learning curves, and suitability for different project requirements.

AngularFrontendLearning Curve
0 likes · 18 min read
Comparative Analysis of React, Angular, and Vue Frameworks
MaGe Linux Operations
MaGe Linux Operations
Nov 5, 2020 · Databases

7 Compelling Reasons Not to Run Databases Inside Docker Containers

Although Docker has become popular for deploying applications, this article outlines seven critical drawbacks—data safety, performance, networking, statefulness, resource isolation, cloud platform incompatibility, and environment requirements—that make containerizing databases generally unsuitable, while also suggesting scenarios where lightweight or distributed databases may still benefit from containerization.

ContainerizationData SafetyDatabases
0 likes · 8 min read
7 Compelling Reasons Not to Run Databases Inside Docker Containers
FunTester
FunTester
Nov 5, 2020 · Operations

How to Implement Fixed‑QPS Load Testing and Fix Common Bugs

This article explains a practical fixed‑QPS load‑testing model for HTTP requests, provides reusable Java code for creating test tasks, and details two bug fixes—one for thread‑pool shutdown handling in asynchronous compensation threads and another for inaccurate request‑counting that caused over‑compensation.

Bug FixConcurrencyJava
0 likes · 7 min read
How to Implement Fixed‑QPS Load Testing and Fix Common Bugs
DataFunTalk
DataFunTalk
Nov 5, 2020 · Big Data

Applying Apache Doris for JD.com Advertising Report Queries: Architecture, Challenges, and Performance

This article details JD.com's transition from a custom ad‑reporting system to Apache Doris, describing the background, challenges with the legacy platform, selection criteria, implementation of data import, pre‑aggregation, on‑site computation, and the resulting performance and operational benefits during regular operation and major sales events.

Ad ReportingApache DorisData Warehouse
0 likes · 12 min read
Applying Apache Doris for JD.com Advertising Report Queries: Architecture, Challenges, and Performance
Architecture Digest
Architecture Digest
Nov 5, 2020 · Databases

Elasticsearch Interview Question: Performance Optimization and Best Practices

The article explains how to improve Elasticsearch query speed on billions of records by leveraging filesystem cache, reducing indexed fields, using data pre‑heating, separating hot and cold indices, designing efficient document models, and applying pagination techniques such as scroll API and search_after.

BackendFilesystem Cachedata modeling
0 likes · 11 min read
Elasticsearch Interview Question: Performance Optimization and Best Practices
Liangxu Linux
Liangxu Linux
Nov 4, 2020 · Fundamentals

How Much Faster Is CPU L1 Cache Compared to RAM, SSD, and HDD?

This article explains the storage hierarchy from CPU registers and caches to RAM, SSD, and HDD, quantifies their speed differences (L1 cache vs. memory, SSD, HDD) and cost ratios, and provides Linux commands to inspect cache sizes, helping readers understand why each level exists and how they interact.

CPU cacheHDDSSD
0 likes · 14 min read
How Much Faster Is CPU L1 Cache Compared to RAM, SSD, and HDD?
Architects Research Society
Architects Research Society
Nov 4, 2020 · Frontend Development

React as a State Management Library: Best Practices and Patterns

This article explains how React can serve as a complete state‑management solution by using hooks, lifting state, component composition, the Context API, and optional libraries, while also covering performance tips, server‑cached versus UI state, and when to adopt external tools.

Context APIFrontendReAct
0 likes · 15 min read
React as a State Management Library: Best Practices and Patterns
Programmer DD
Programmer DD
Nov 4, 2020 · Databases

7 Essential Linux Tweaks to Supercharge Redis Performance

This guide explains seven critical Linux operating‑system settings—memory overcommit, swappiness, Transparent Huge Pages, OOM killer, NTP synchronization, ulimit, and TCP backlog—that together ensure Redis runs reliably and at peak speed.

DatabaseOS TuningRedis
0 likes · 14 min read
7 Essential Linux Tweaks to Supercharge Redis Performance
ITPUB
ITPUB
Nov 3, 2020 · Databases

How Indexes Supercharge MySQL Queries: A Deep Dive into EXPLAIN

This article explains why MySQL indexes dramatically improve query speed, outlines common reasons for slow SQL, shows how to use EXPLAIN to analyze execution plans, and provides step‑by‑step optimization examples with code and visual illustrations.

EXPLAINMySQLindex
0 likes · 14 min read
How Indexes Supercharge MySQL Queries: A Deep Dive into EXPLAIN
php Courses
php Courses
Nov 2, 2020 · Backend Development

Implementing Full Page Cache with Redis in PHP

This article explains how to improve the performance of rarely‑changed web pages such as user agreements by storing their rendered HTML in Redis as a full‑page cache, describing the design of helper functions, the RedisFPC class implementation, usage examples, testing results, and practical recommendations.

full page cacheperformance
0 likes · 8 min read
Implementing Full Page Cache with Redis in PHP
Tencent Cloud Middleware
Tencent Cloud Middleware
Oct 30, 2020 · Cloud Computing

How KonaJDK Powers Tencent Cloud Java, Big Data, and Secure Computing

This article explains how Tencent's self‑developed KonaJDK underpins cloud Java services, enhances micro‑service monitoring, adds national cryptography support, optimizes large‑heap tools like jmap, and delivers performance gains for big‑data workloads, while contributing key features back to the OpenJDK community.

Big DataCloud ComputingJVM
0 likes · 11 min read
How KonaJDK Powers Tencent Cloud Java, Big Data, and Secure Computing
Amap Tech
Amap Tech
Oct 30, 2020 · Frontend Development

Frontend Performance Optimization: Common Issues and Solutions for Large‑Scale Projects

Large‑scale front‑end projects suffer from oversized bundles, unnecessary listeners, deep cloning, and mutable state, causing latency and crashes; the article explains how to diagnose these problems with Chrome DevTools and Webpack tools and resolves them through bundle splitting, tree‑shaking, memoisation, immutable patterns, and caching.

OptimizationReActTree Shaking
0 likes · 12 min read
Frontend Performance Optimization: Common Issues and Solutions for Large‑Scale Projects
Zhongtong Tech
Zhongtong Tech
Oct 30, 2020 · Big Data

How Apache Kylin Supercharged OLAP at ZTO Express: A Deep Dive

This article details ZTO Express's journey of adopting Apache Kylin for OLAP, comparing it with Presto, describing platform architecture, performance gains, integration with scheduling and monitoring systems, and the practical optimizations and future plans that enabled sub‑second query responses on massive daily data volumes.

Apache KylinBig DataHBase
0 likes · 16 min read
How Apache Kylin Supercharged OLAP at ZTO Express: A Deep Dive
Programmer DD
Programmer DD
Oct 30, 2020 · Backend Development

How Dubbo’s Single Long Connection Leads to Congestion and What You Can Do

This article examines a production incident where Dubbo services became congested, explains the underlying communication process with detailed code analysis, identifies key protocol and service parameters affecting performance, conducts experiments on connection count and TCP buffers, and offers practical recommendations to optimize Dubbo throughput.

DubboJavaTCP
0 likes · 26 min read
How Dubbo’s Single Long Connection Leads to Congestion and What You Can Do
Xianyu Technology
Xianyu Technology
Oct 29, 2020 · Mobile Development

Performance Optimization of Long List Scrolling in Android and Flutter

The article details how Xianyu improved long‑list scrolling smoothness on both native Android and Flutter by building a cross‑platform frame‑jank detection tool, applying async view‑caching and unbinding in Android, and using repaint boundaries, clipping tweaks, time‑slicing and custom scroll physics in Flutter, achieving up to 57 FPS and halving big‑jank counts on low‑end devices.

AndroidFlutterListView
0 likes · 21 min read
Performance Optimization of Long List Scrolling in Android and Flutter
Big Data Technology & Architecture
Big Data Technology & Architecture
Oct 29, 2020 · Fundamentals

Zero-Copy Data Transfer Mechanism: Principles, Implementations, and Applications in Java, Kafka, and Spark

This article explains the zero‑copy data transfer technique, compares it with traditional read/write approaches, shows Java NIO code examples, and discusses its use in high‑performance systems such as Kafka and Spark, highlighting the reductions in context switches and memory copies.

Data TransferJava NIOKafka
0 likes · 16 min read
Zero-Copy Data Transfer Mechanism: Principles, Implementations, and Applications in Java, Kafka, and Spark
Top Architect
Top Architect
Oct 28, 2020 · Backend Development

SpringBoot Project Optimization: Configuration File and JVM Tuning Guide

This article explains how to optimize a SpringBoot application by modifying the application.properties configuration file and tuning JVM parameters, providing practical code examples, IDE and script methods, and detailed explanations of each JVM option for better performance.

JVM tuningJavaSpringBoot
0 likes · 7 min read
SpringBoot Project Optimization: Configuration File and JVM Tuning Guide
DataFunTalk
DataFunTalk
Oct 27, 2020 · Databases

Didi's Large‑Scale Elasticsearch Upgrade: Architecture, Migration Strategy, and Performance Gains

This article systematically details Didi's migration of over 30 Elasticsearch clusters, 3,500 nodes and 8 PB of data from version 2.3.3 to 6.6.1, covering background, problem analysis, multi‑version architecture redesign, capacity planning, tiered storage, FastIndex, query replay, upgrade pitfalls, and the resulting cost reduction and performance improvements.

CapacityPlanningElasticsearchUpgrade
0 likes · 15 min read
Didi's Large‑Scale Elasticsearch Upgrade: Architecture, Migration Strategy, and Performance Gains
Tencent Cloud Developer
Tencent Cloud Developer
Oct 26, 2020 · Databases

Database Auditing: Concepts, Methods, and TXSQL Implementation

Database auditing records user actions to detect illegal operations, with approaches ranging from application‑layer and transport‑layer monitoring to kernel‑level and plugin solutions; TXSQL’s MySQL‑compatible audit plugin offers both synchronous and asynchronous modes, delivering flexible rule configuration and only 3‑6 % performance overhead, making it a low‑impact, feature‑rich choice for compliance and forensics.

Audit ArchitectureDatabase AuditingMySQL
0 likes · 12 min read
Database Auditing: Concepts, Methods, and TXSQL Implementation