All Articles

142414 articles · Page 6767 of 7121

Feb 16, 2017 · Artificial Intelligence

How Reinforcement Learning Transforms E‑Commerce Search and Recommendation at Scale

This article explores how Alibaba's Taobao leverages reinforcement learning, Markov decision processes, and reward shaping to improve large‑scale product search ranking and recommendation, detailing problem modeling, algorithm designs such as Tabular Q‑learning and DDPG, experimental results, and advanced recommendation models like GBDT‑FTRL and Wide‑Deep.

MDPRecommendation Systemsdeep learning

0 likes · 21 min read

How Reinforcement Learning Transforms E‑Commerce Search and Recommendation at Scale

Tencent IMWeb Frontend Team

Feb 16, 2017 · Backend Development

Build a Hacker News GraphQL API with Go: Step‑by‑Step Guide

Learn how to replace RESTful endpoints with a GraphQL service by creating a Hacker News API in Go, covering core concepts, type and field definitions, query and mutation setup, and essential resolver implementations illustrated with complete code examples.

APIGoGraphQL

0 likes · 6 min read

Build a Hacker News GraphQL API with Go: Step‑by‑Step Guide

Qunar Tech Salon

Feb 16, 2017 · Backend Development

Building a RESTful API with Perfect in Swift: A Server‑Side Development Guide

This article walks through building a RESTful API using the Perfect framework in Swift, covering framework comparison, environment setup with Docker, project initialization, routing, database integration via MySQL‑Swift, error handling, logging, deployment, and lessons learned from server‑side Swift development.

DockerMySQLPerfect

0 likes · 18 min read

Building a RESTful API with Perfect in Swift: A Server‑Side Development Guide

dbaplus Community

Feb 15, 2017 · Databases

How to Diagnose and Fix a Galera Cluster Node Failure in Percona XtraDB

This article walks through a real‑world Galera cluster outage, explains the replication and flow‑control mechanisms, details the step‑by‑step analysis of thread‑running spikes and wsrep delays, identifies a network‑induced port latency as the root cause, and describes the recovery actions taken to restore the Percona XtraDB Cluster.

Database TroubleshootingFlow ControlGalera

0 likes · 9 min read

How to Diagnose and Fix a Galera Cluster Node Failure in Percona XtraDB

Efficient Ops

Feb 15, 2017 · Operations

Mastering the One‑Second Rule: Boost Mobile User Experience in 2024

This article explains how mobile network characteristics, the one‑second rule, and targeted optimizations in access scheduling, protocols, and business logic can dramatically improve download success, startup speed, and overall user experience for mobile services.

Networkmobileoperations

0 likes · 24 min read

Mastering the One‑Second Rule: Boost Mobile User Experience in 2024

ITFLY8 Architecture Home

Feb 15, 2017 · Databases

How to Achieve Cross‑Data‑Center State Sync with Two‑Site Three‑Center Architecture

This article explains the theory and practical techniques behind synchronizing state across data centers using a two‑site three‑center model, covering distributed protocols like Paxos and Raft, CAP trade‑offs, latency challenges, and high‑availability designs for robust database replication.

CAP theoremDistributed SystemsHigh Availability

0 likes · 8 min read

How to Achieve Cross‑Data‑Center State Sync with Two‑Site Three‑Center Architecture

Architects' Tech Alliance

Feb 15, 2017 · Fundamentals

Understanding Direct Attached Storage (DAS): Evolution, Market Growth, Architecture, and HPC/Cloud Applications

The article reviews the evolution of Direct Attached Storage (DAS) from its early role as basic direct‑connected storage to its renewed relevance in big‑data, cloud, and HPC environments, detailing market growth, vendor offerings, architectural designs, and practical deployment scenarios.

DASHPCJBOD

0 likes · 8 min read

Understanding Direct Attached Storage (DAS): Evolution, Market Growth, Architecture, and HPC/Cloud Applications

21CTO

Feb 15, 2017 · Fundamentals

How Twitter Evolved Its Search Engine: From MySQL to Earlybird and Beyond

This article explains the fundamentals of search engine architecture, covering text collection, indexing, ranking and evaluation, and then traces Twitter's internal search evolution from MySQL full‑text search to the Earlybird index server, Blender aggregation, and smart memory‑SSD strategies.

Big DataIndexingSearch Engine

0 likes · 8 min read

How Twitter Evolved Its Search Engine: From MySQL to Earlybird and Beyond

ITPUB

Feb 15, 2017 · Databases

Master Oracle Flashback: Recover Data with Queries, Versions, and Transactions

This article explains Oracle Flashback technology—from basic flashback queries and version queries to transaction-level recovery—detailing required undo tablespace settings, essential parameters, SQL syntax, and step‑by‑step examples that demonstrate how to restore erroneous DML operations efficiently.

Database RecoveryFlashbackOracle

0 likes · 9 min read

Master Oracle Flashback: Recover Data with Queries, Versions, and Transactions

ITPUB

Feb 15, 2017 · Backend Development

Demystifying Python Decorators: Build a Flask‑Style Router for Tornado

This tutorial explains how Python decorators work, demonstrates a simple decorator that adds database‑connection logic, shows how to return a wrapper function to avoid modifying existing calls, and walks through creating a Flask‑style @router decorator for Tornado web routing.

decoratorssyntactic sugartornado

0 likes · 7 min read

Demystifying Python Decorators: Build a Flask‑Style Router for Tornado

Tencent Cloud Developer

Feb 15, 2017 · Backend Development

PHP7 Upgrade Practice for QQ Member Activity Platform (AMS)

The QQ Member Activity Platform upgraded its legacy PHP 5.2/Apache 2.0 stack to PHP 7.0 with Apache 2.4 through staged migrations, extensive extension refactoring, and rigorous debugging, ultimately achieving roughly double the request‑handling performance and significant hardware cost savings while maintaining service stability.

Extension DevelopmentJITPHP Upgrade

0 likes · 23 min read

PHP7 Upgrade Practice for QQ Member Activity Platform (AMS)

Weidian Tech Team

Feb 15, 2017 · Frontend Development

Boost Your React Build Speed: Proven Webpack Optimization Techniques

Learn how to dramatically reduce webpack build times for large React projects by switching to Yarn, removing unused dependencies, leveraging code splitting, caching, parallel Uglify, HappyPack, DLL plugins, aliasing, and other practical configuration tweaks that cut initial builds from minutes to seconds.

Build Optimizationperformancewebpack

0 likes · 11 min read

Boost Your React Build Speed: Proven Webpack Optimization Techniques

MaGe Linux Operations

Feb 15, 2017 · Fundamentals

Top 18 Open-Source Operating Systems Powering the IoT Revolution

This article surveys the most notable open‑source operating systems for the Internet of Things, covering both Linux‑based and non‑Linux platforms, and highlights their memory footprints, power efficiency, modular networking stacks, security features, and real‑time determinism requirements.

Embedded LinuxIoTOperating Systems

0 likes · 14 min read

Top 18 Open-Source Operating Systems Powering the IoT Revolution

ZhiKe AI

Feb 15, 2017 · Information Security

Understanding iptables: A Comprehensive Introduction to Linux Packet Filtering

This article introduces Linux’s built-in iptables (netfilter) firewall, explains its four tables and chains, and provides detailed command-line examples for starting, stopping, configuring, listing, and managing rules, including common options and extended matching techniques.

Linux firewallfirewall rulesiptables

0 likes · 7 min read

Understanding iptables: A Comprehensive Introduction to Linux Packet Filtering

Alibaba Cloud Developer

Feb 15, 2017 · Backend Development

Taobao’s Secret to Billions of API Calls: High‑Performance Gateway & Reliable Messaging

Taobao’s Open Platform sustains hundreds of billions of daily API calls and messages by employing a pipeline‑based high‑performance API gateway with multi‑level caching, asynchronous processing, granular traffic control, a highly reliable push‑pull messaging system, and a zero‑loss data‑sync service that dynamically balances resources during massive traffic spikes.

API gatewayBackend Architecturedata synchronization

0 likes · 18 min read

Taobao’s Secret to Billions of API Calls: High‑Performance Gateway & Reliable Messaging

58UXD

Feb 15, 2017 · Product Management

How UGC Products Evolve: From Users to Content Creators

This article explains the three‑layer UGC ecosystem, how secondary producers transform raw user content, the importance of reducing information noise for consumers, and why timely feedback and content repurposing are crucial for keeping both creators and users engaged.

UGCuser-generated content

0 likes · 6 min read

How UGC Products Evolve: From Users to Content Creators

DevOps

Feb 15, 2017 · Cloud Native

Deploying an Old ASP.NET MVC 2 Application with SQL Server Using Windows Containers

This tutorial demonstrates how to containerize a legacy ASP.NET MVC 2 web application with a SQL Server database by running a Windows Container, configuring volume mappings, updating connection strings, creating a Dockerfile, building an image, and deploying the service.

.NETASP.NET MVCDevOps

0 likes · 5 min read

Deploying an Old ASP.NET MVC 2 Application with SQL Server Using Windows Containers

Qunar Tech Salon

Feb 14, 2017 · R&D Management

Case Study: Qunar Project Management Platform for Reducing Development Costs and Boosting R&D Efficiency

This case study describes how Qunar's R&D support team built an integrated project management platform that unified workflow, data, and toolchains across development, testing, and release stages, dramatically lowering communication overhead, eliminating information inconsistencies, and improving overall engineering productivity.

Process AutomationR&D EfficiencyTool Integration

0 likes · 14 min read

Case Study: Qunar Project Management Platform for Reducing Development Costs and Boosting R&D Efficiency

Efficient Ops

Feb 14, 2017 · Databases

What Real‑World DBA Lessons Reveal About Database Reliability

The article shares a DBA’s three‑year journey at Ganji, detailing core responsibilities, painful incidents like accidental table deletions and massive Redis growth, and practical lessons on stability, backup, hardware prioritization, business alignment, and improving communication between operations and development teams.

Database AdministrationDevOpsReliability

0 likes · 9 min read

What Real‑World DBA Lessons Reveal About Database Reliability

System Architect Go

Feb 14, 2017 · Databases

Introduction to MySQL and MongoDB with Comparison and Basic CRUD Operations

This article introduces MySQL and MongoDB, compares their characteristics, and demonstrates simple CRUD commands for each, helping developers understand when to choose a relational versus a non‑relational database based on business needs.

CRUDDatabase ComparisonMongoDB

0 likes · 4 min read

Introduction to MySQL and MongoDB with Comparison and Basic CRUD Operations