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140474 articles · Page 6960 of 7024

Art of Distributed System Architecture Design

Jul 29, 2015 · Frontend Development

An Overview of Backbone.js: Architecture, Core Components, and Practical Use Cases

This article provides a comprehensive introduction to Backbone.js, describing its lightweight MVC architecture, core components such as Models, Collections, Views, Events, Sync, Router, and History, and discusses its advantages, suitable scenarios, comparisons with other frameworks, and a real‑world implementation in the Wandoujia PC client.

Backbone.jsJavaScriptMVC

0 likes · 15 min read

Architect

Jul 29, 2015 · Backend Development

Designing a Friend Status Broadcast System: From Database Queries to Asynchronous Delivery

This article outlines the step‑by‑step design of a friend‑status broadcast service, starting with simple MongoDB queries, moving to message‑driven delivery, adding asynchronous processing with a job queue, and finally handling inactive users through caching and expiration strategies.

Rubyasynchronous deliverystatus broadcast

0 likes · 7 min read

Designing a Friend Status Broadcast System: From Database Queries to Asynchronous Delivery

Architect

Jul 29, 2015 · Databases

Google App Engine Datastore: Usage, Architecture, and Implementation

This article explains how Google App Engine Datastore works from a programmer's perspective, covering its entity‑based data model, hierarchical structure, query capabilities, comparison with relational databases, and the underlying implementation built on BigTable including entities, indexes, transactions, and backup mechanisms.

BigtableDataStoreDatabase Architecture

0 likes · 10 min read

Google App Engine Datastore: Usage, Architecture, and Implementation

Suning Technology

Jul 29, 2015 · Big Data

Highlights from the 2015 Suning Big Data Meetup: Platforms, Spark, and Octopus

The 2015 Suning Big Data Meetup in Nanjing gathered industry experts and researchers to showcase Suning's data platform architecture, Intel's Spark advancements, ZTE's DAP system, and a unified Octopus programming model, emphasizing open knowledge sharing and practical big‑data solutions.

Octopus ModelSparkSuning

0 likes · 6 min read

Highlights from the 2015 Suning Big Data Meetup: Platforms, Spark, and Octopus

Efficient Ops

Jul 29, 2015 · Cloud Computing

Why SDN Is Revolutionizing Public Cloud Networks – Insights and Real-World Cases

This article explores how Software‑Defined Networking (SDN) has moved from theory to large‑scale deployment in public‑cloud environments, detailing overlay technologies like VXLAN, integration with NFV, practical migration challenges, and real‑world use cases—including automated path probing and controller‑based solutions—while also highlighting a company’s own SDN products.

Cloud ComputingNFVNetwork Virtualization

0 likes · 11 min read

Why SDN Is Revolutionizing Public Cloud Networks – Insights and Real-World Cases

Java High-Performance Architecture

Jul 29, 2015 · Databases

Boost MySQL Sorting Speed: Optimize max_length_for_sort_data & sort_buffer_size

Learn how to accelerate MySQL sorting by increasing the max_length_for_sort_data parameter, removing unnecessary columns, and enlarging sort_buffer_size, ensuring the server uses the more efficient in‑memory sorting algorithm while avoiding costly data segmentation and temporary tables.

MySQLPerformanceparameters

0 likes · 2 min read

Boost MySQL Sorting Speed: Optimize max_length_for_sort_data & sort_buffer_size

Art of Distributed System Architecture Design

Jul 28, 2015 · Databases

Introducing QDB and RebornDB: A Distributed Key‑Value Database Compatible with Redis and Supporting Dynamic Resharding

This article explains the motivations behind key‑value stores, compares Redis with the newly created QDB, and details the architecture, dynamic resharding, high‑availability mechanisms, and future improvements of the distributed database solution RebornDB.

High AvailabilityQDBRebornDB

0 likes · 12 min read

Introducing QDB and RebornDB: A Distributed Key‑Value Database Compatible with Redis and Supporting Dynamic Resharding

Qunar Tech Salon

Jul 28, 2015 · Fundamentals

Introduction to xargs with Basic and Advanced Usage Examples

This article explains the purpose of the Unix xargs command, demonstrates basic usage for concatenating log files, shows an advanced example for renaming text files to log files using the -I placeholder, and provides a step‑by‑step breakdown of how the command pipeline works.

Batch ProcessingScriptingShell

0 likes · 3 min read

Introduction to xargs with Basic and Advanced Usage Examples

MaGe Linux Operations

Jul 28, 2015 · Operations

Boost Server Performance with Gearman, CPU Affinity, and Nginx Worker Binding

This guide explains how to use Gearman for Map/Reduce tasks, assign workers to specific CPU cores with taskset, and configure Nginx worker processes with CPU affinity to fully exploit multi‑core servers and improve overall system efficiency.

CPU affinityGearmanLinux

0 likes · 6 min read

Boost Server Performance with Gearman, CPU Affinity, and Nginx Worker Binding

MaGe Linux Operations

Jul 28, 2015 · Fundamentals

Understanding Processes vs. Threads: Definitions, Differences, and Trade‑offs

This article explains what processes and threads are, how they relate, their key differences, and the advantages and disadvantages of each, helping readers grasp why multithreading can boost efficiency while processes offer stronger isolation and fault tolerance.

concurrencymultithreadingprocess

0 likes · 5 min read

Understanding Processes vs. Threads: Definitions, Differences, and Trade‑offs

Practical DevOps Architecture

Jul 28, 2015 · Operations

How to Enable Telnet Service and Configure ACL on a Huawei Switch

This guide explains step‑by‑step how to enable the Telnet service on a Huawei switch, set up a time‑range, create a basic ACL that permits a single host, and apply the ACL to the VTY lines to restrict access.

ACLHuaweiOperations

0 likes · 3 min read

How to Enable Telnet Service and Configure ACL on a Huawei Switch

Efficient Ops

Jul 28, 2015 · Operations

How Tencent’s BlueKing Automates Fault Recovery and Zero‑Touch Game Server Launch

This article explains how Tencent Game's BlueKing platform redesigns operations by building open‑source PaaS capabilities, automating fault self‑healing, enabling fully automated game server region launches, supporting self‑service change releases, leveraging big‑data for real‑time decisions, and moving toward open‑source and hybrid‑cloud solutions.

AutomationBig Datafault-recovery

0 likes · 19 min read

How Tencent’s BlueKing Automates Fault Recovery and Zero‑Touch Game Server Launch

Java High-Performance Architecture

Jul 28, 2015 · Databases

How MySQL Executes ORDER BY: Index vs Sorting Algorithms Explained

MySQL's ORDER BY can either use an ordered index to return rows directly or apply one of two sorting algorithms—original and the MySQL 4.1 enhanced version—to sort data in memory, with the newer method reducing I/O by avoiding a second table read at the cost of higher memory usage.

MySQLOrder ByPerformance

0 likes · 3 min read

How MySQL Executes ORDER BY: Index vs Sorting Algorithms Explained

Art of Distributed System Architecture Design

Jul 28, 2015 · Fundamentals

Introduction to Linux Asynchronous I/O (AIO) and Its API

This article explains Linux asynchronous I/O (AIO), compares it with synchronous and non‑blocking I/O models, describes the underlying aiocb structure, and provides detailed examples of the AIO API functions such as aio_read, aio_write, aio_error, aio_return, aio_suspend, aio_cancel and lio_listio.

AIOPOSIXaio_read

0 likes · 22 min read

Introduction to Linux Asynchronous I/O (AIO) and Its API

Architect

Jul 27, 2015 · Backend Development

Design and Architecture of Specialized Search Services

The article explains the concept of specialized search, its service model, and detailed backend architecture considerations such as interface standards, traffic distribution, service invocation, and component reuse, illustrated with protobuf definitions and deployment diagrams.

Searchbackendprotobuf

0 likes · 8 min read

Architect

Jul 27, 2015 · Databases

Evolution of MySQL Architecture for Different Concurrency Levels

This article describes how MySQL architectures evolve from a single instance to vertical splitting, master‑slave replication, horizontal sharding, and cloud‑based SaaS solutions to handle increasing traffic, data size, and operational requirements while maintaining scalability and availability.

Database ArchitectureMySQLcloud SaaS

0 likes · 13 min read

Evolution of MySQL Architecture for Different Concurrency Levels

Qunar Tech Salon

Jul 27, 2015 · Frontend Development

JavaScript JSON Number Handling and Integer Overflow Issues

The article explains how JavaScript interprets JSON values without quotation marks as numbers, demonstrates the difference between numeric and string representations of the same value, and warns that large numeric literals may overflow a 32‑bit integer during internal conversion.

Data TypesJavaScriptinteger overflow

0 likes · 2 min read

JavaScript JSON Number Handling and Integer Overflow Issues

Qunar Tech Salon

Jul 27, 2015 · Databases

Understanding Variable-Length Data Structures and Storage Costs in PostgreSQL

This article explains how variable‑length data structures are stored in databases, illustrates PostgreSQL's page and row formats, and compares the storage overhead of DEFAULT NULL versus DEFAULT '' fields, showing that NULL can reduce space dramatically when many columns are nullable.

Database DesignNULL handlingPostgreSQL

0 likes · 5 min read

Understanding Variable-Length Data Structures and Storage Costs in PostgreSQL

Qunar Tech Salon

Jul 27, 2015 · Backend Development

Parsing XML with Perl in Three Lines

This short tutorial shows how to use Perl's XML::Simple module to load an XML file and iterate over its elements with just three lines of code, providing a quick backend solution for XML data extraction.

CodeSnippetParsingXML

0 likes · 2 min read

MaGe Linux Operations

Jul 27, 2015 · Operations

How to Log Every User Command to a Remote Syslog Server on Linux

This guide shows how to capture every command a Linux user runs, store it with timestamps, and forward the logs to a remote syslog server using shell configuration and rsyslog, offering two methods and discussing their limitations.

Command LoggingLinuxShell

0 likes · 4 min read

How to Log Every User Command to a Remote Syslog Server on Linux