This article shares a practical front‑end interview framework, covering GitHub profile checks, hands‑on JavaScript coding tasks such as string spacing, prototype extensions, argument handling, context binding, and building a modal component, all illustrated with clear code examples.
This tutorial introduces Apache Storm’s fundamental principles and development workflow, providing a PDF guide and source code for two practical examples—real‑time word‑count and call‑record aggregation—while covering its definition, use cases, relationship with Hadoop, core concepts, cluster architecture, and step‑by‑step usage.
Suning’s Silicon Valley research team presented a novel keyword‑based sentence similarity method at the 9th Web Science conference, highlighting how incorporating keywords, part‑of‑speech, and word position improves chatbot accuracy and efficiency, achieving up to 30% better relevance judgments.
This article explains JMeter's distributed testing capabilities, compares standard, batch, and asynchronous modes, and shows performance results using a visual platform, highlighting how controller bottlenecks can affect load testing at scale.
This article explains how applying machine‑learning techniques such as EWMA and periodic‑based amplitude analysis creates dynamic thresholds that dramatically reduce false alerts in monitoring systems while improving detection of genuine anomalies.
The article explains how salt‑minion’s DNS resolution can become stale after a data‑center migration because each Linux process caches resolver settings in a private _res structure initialized by glibc’s res_init(), and it offers practical ways to force a refresh or redesign the lookup mechanism.
This article compares how Kotlin and Swift define variables and properties, highlighting differences in syntax, type inference, constants versus mutable variables, and the handling of stored and computed properties with getter and setter implementations.
This guide explains how to identify performance bottlenecks in WebGL applications by examining CPU and GPU workloads, using tools such as stats.js, Chrome DevTools, Web Tracing Framework, and offers concrete optimization strategies for shaders, draw calls, state changes, and resource management.
This guide walks Huawei competition participants through the essential steps for building a video app, covering user‑need analysis, UI simplification, backend setup, performance considerations, screen adaptation, messaging, precise marketing, and experience measurement, while providing useful resource links.
This article explains how Elasticsearch computes relevance scores using Lucene's practical scoring formula, term frequency, inverse document frequency, field-length norms, and query normalization, and demonstrates query-time boosting, constant_score, function_score, decay functions, and script_score with practical DSL examples.
The article describes how Ctrip’s IM+ platform integrates voice calls and instant messaging into a unified, multi‑channel customer service solution, detailing its background, current limitations, hybrid architecture, distributed intelligent routing, rule‑engine based allocation, and unified session management to improve efficiency and user experience.
The article introduces Qunit, a Java‑based API testing framework, and explains how zero‑intrusion aspect technology using a JavaAgent enables dynamic mock data recording and playback, while a distributed execution platform parallelizes test runs to dramatically reduce overall testing time.
This article examines Kotlin’s rise after Google I/O 2017, its multi‑platform compilation capabilities, key language features such as immutability, reduced boilerplate, null‑safety, and seamless Java interoperability, while offering practical insights for Android and cross‑platform mobile developers.
This article details how Alibaba's RDC platform combines layered automated testing, test‑driven continuous delivery, and comprehensive online quality monitoring to overcome the myth of a single silver‑bullet solution in large‑scale software development.
This article outlines the service‑centric approach of internet operations, detailing how stability, security, and efficiency are achieved through infrastructure management, system and application maintenance, database administration, and security practices, and traces the evolution of operational roles from manual handling to automated, self‑scheduling platforms.
This article walks through essential Matplotlib techniques—including creating scatter plots, applying polynomial fitting, generating multiple subplots with the Iris dataset, drawing reference lines, and enabling interactive updates—providing concise code snippets and visual examples for each step.
This article compares SQL Server, Oracle, and MySQL, outlining each system’s key advantages such as scalability, platform support, performance, and cost, while also detailing their main drawbacks including limited openness, hardware demands, security complexities, and feature gaps, helping readers choose the most suitable database.
This article explains why continuous testing is essential for effective DevOps, describing its role in feedback loops, key performance metrics, testing frameworks, and how automated testing drives quality and rapid delivery across development, QA, and operations.
This article, based on a DevOpsDays talk, explains practical shell‑script techniques—adding logging, usage help, file locking, and clear comments—to make MySQL backup scripts reliable, maintainable, and safe for collaborative operations environments.
This article explains MongoDB sharded clusters, covering data distribution, primary shard concepts, metadata collections, commands for moving primary shards, managing balancer settings, handling jumbo chunks, and procedures for adding or removing shards, with practical code examples for each operation.
