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DataFunTalk
DataFunTalk
Dec 27, 2022 · Big Data

Multi‑Stream Join and Concurrency Control in Apache Hudi: Design, Implementation, and Usage

This article presents a comprehensive solution for multi‑stream joins in Apache Hudi, detailing the challenges of dimension and multi‑stream joins, the novel storage‑layer join approach, timeline‑based concurrency control, marker mechanisms, early conflict detection, payload customization, and practical usage with Flink and Spark, along with performance benefits and future directions.

Apache HudiData LakeFlink
0 likes · 31 min read
Multi‑Stream Join and Concurrency Control in Apache Hudi: Design, Implementation, and Usage
NetEase Cloud Music Tech Team
NetEase Cloud Music Tech Team
Oct 26, 2020 · Mobile Development

iOS Widget Development Practice with WidgetKit: A Comprehensive Guide

This guide walks through iOS widget development with WidgetKit, covering timeline mechanics, SwiftUI‑only UI building, network and image handling, reload policies, deep‑link clicks, Intent‑based configuration, and the benefits and constraints experienced by NetEase Cloud Music’s frontend team.

App ExtensionIntents FrameworkMobile Widget
0 likes · 22 min read
iOS Widget Development Practice with WidgetKit: A Comprehensive Guide
Qunar Tech Salon
Qunar Tech Salon
Mar 27, 2019 · Artificial Intelligence

Profiling TensorFlow Performance with TensorBoard and Timeline

This article explains how to use TensorBoard and the Timeline tool to monitor TensorFlow GPU utilization, identify operation bottlenecks, and visualize execution times, including code examples and steps for exporting and merging profiling data for repeated runs.

GPU MonitoringPerformance ProfilingTensorBoard
0 likes · 7 min read
Profiling TensorFlow Performance with TensorBoard and Timeline
Architect
Architect
Jul 30, 2015 · Backend Development

Redis‑Backed Timeline Implementation with MongoDB for a Subscription Feed

This article explains how to implement a scalable timeline for a subscription feed by combining MongoDB storage with a Redis list cache, detailing the data model, query challenges, Redis operations for pushing and trimming statuses, rebuilding strategies, and handling data integrity trade‑offs.

BackendCacheData Integrity
0 likes · 7 min read
Redis‑Backed Timeline Implementation with MongoDB for a Subscription Feed
Architect
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.

CachingRubyTimeline
0 likes · 7 min read
Designing a Friend Status Broadcast System: From Database Queries to Asynchronous Delivery