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Latest from vivo Internet Technology

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vivo Internet Technology

Aug 21, 2024 · Databases

MySQL Data Migration with Double‑Write Strategy Using a MyBatis Plugin

The article details a zero‑downtime migration of a high‑traffic reservation service from a shared MySQL instance to an isolated database by employing a double‑write strategy implemented through a custom MyBatis plugin, covering full and incremental sync, consistency verification, traffic shifting, and key lessons on primary‑key handling and asynchronous write side‑effects.

Data MigrationDatabaseMyBatis

0 likes · 19 min read

MySQL Data Migration with Double‑Write Strategy Using a MyBatis Plugin

vivo Internet Technology

Aug 14, 2024 · Backend Development

Understanding Disruptor: High‑Performance In‑Memory Queue, Core Concepts, Demo, and Source Code Analysis

The article explains the Disruptor—an intra‑process, lock‑free, array‑based queue that achieves millions of operations per second—by covering its core concepts, demo code, source‑code mechanics, performance optimizations such as pre‑allocation and false‑sharing avoidance, and real‑world Vivo iTheme applications with best‑practice tips.

DisruptorJavaProducer Consumer

0 likes · 29 min read

Understanding Disruptor: High‑Performance In‑Memory Queue, Core Concepts, Demo, and Source Code Analysis

vivo Internet Technology

Aug 7, 2024 · Databases

MySQL 5.7 DDL vs GH-OST: A Comprehensive Comparison of Online Schema Change Tools

While MySQL 5.7 native DDL methods (copy, inplace rebuild, index build, metadata‑only) vary in speed, space use, lock impact, and binlog output, GH‑OST consistently offers the fastest execution, lowest lock blocking, real‑time replication, albeit at roughly double storage cost, making it ideal for risk‑averse online schema changes.

DDLDatabase MigrationDatabase Schema

0 likes · 11 min read

MySQL 5.7 DDL vs GH-OST: A Comprehensive Comparison of Online Schema Change Tools

vivo Internet Technology

Jul 24, 2024 · Backend Development

Design and Implementation of a Visual Monitoring System for Caffeine Cache

The article presents a visual monitoring system for the Caffeine Java cache that adds instance naming, memory‑usage estimation, dynamic size and expiration configuration, real‑time statistics and data queries, and a Jetty‑based HTTP control panel, enabling global cache management, trend charts, and on‑the‑fly cache invalidation.

Cache VisualizationCaffeine cacheJava

0 likes · 15 min read

Design and Implementation of a Visual Monitoring System for Caffeine Cache

vivo Internet Technology

Jul 17, 2024 · Frontend Development

Optimizing 3D Model Loading and First‑Frame Rendering with Three.js, ZIP Packaging, and WASM Decompression

By compressing GLB files into ZIP, extending Three.js loaders to unzip via a Rust‑compiled WASM tool, encrypting small buffers, and caching morph‑target shaders while spreading mesh rendering across frames, the team shrank model size from 50 MB to 11 MB and cut first‑frame render time from 7 seconds to 0.6 seconds, reducing overall page load from 15 seconds to 5 seconds.

3D model optimizationPerformanceWasm

0 likes · 11 min read

Optimizing 3D Model Loading and First‑Frame Rendering with Three.js, ZIP Packaging, and WASM Decompression

vivo Internet Technology

Jul 10, 2024 · Databases

HBase Optimization Practice in Vivo's Unified Content Platform

Vivo's unified content platform replaced its unwieldy 60 TB MongoDB store with HBase, then upgraded the cluster, introduced table‑specific connection pools, column‑only reads, tuned compaction, and leveraged multi‑version cells, cutting response times from seconds to under ten milliseconds and dramatically lowering operational costs while boosting read/write performance.

Columnar StorageCompaction OptimizationHBase

0 likes · 16 min read

HBase Optimization Practice in Vivo's Unified Content Platform

vivo Internet Technology

Jul 3, 2024 · Fundamentals

Vivo Wins National Science and Technology Progress Award for 5G Technology

Vivo’s Communications Research Institute earned the 2023 National Science and Technology Progress Award’s first‑prize for its groundbreaking 5G work, including standards development, verification, testing, product R&D and promotion, backed by over 6,000 patents, 16,000 technical papers, multiple 5G/6G prototypes and influential white papers.

5G Technology6G researchNational Science and Technology Progress Award

0 likes · 3 min read

Vivo Wins National Science and Technology Progress Award for 5G Technology

vivo Internet Technology

Jul 3, 2024 · Databases

End-to-End Data Consistency Verification for MySQL in DTS

The Vivo Internet Storage R&D team's article describes an end‑to‑end MySQL data‑consistency verification tool for DTS that uses fixed‑size chunking and CRC32/MD5 fingerprint aggregation to quickly compare source and target tables, pinpoint mismatched rows, and enable automated or manual correction while minimizing impact on replication.

CRC32DTSDatabase Synchronization

0 likes · 13 min read

End-to-End Data Consistency Verification for MySQL in DTS

vivo Internet Technology

Jun 26, 2024 · R&D Management

Vivo Engineering Efficiency Team: VCR Platform Development and Code Review Plugin Implementation

The article describes Vivo's Engineering Efficiency team's VCR platform, built on GitLab and Gerrit, detailing the design and implementation of code‑review plugins, challenges faced, architectural integration, customization techniques, and future directions toward automated and AI‑enhanced code review.

Engineering EfficiencyGerritGitLab

0 likes · 15 min read

Vivo Engineering Efficiency Team: VCR Platform Development and Code Review Plugin Implementation

vivo Internet Technology

Jun 19, 2024 · Big Data

Understanding BitMap and Roaring BitMap: Principles, Containers, and Java API Usage

The article explains BitMap fundamentals and introduces Roaring BitMap’s compressed container architecture—Array, BitMap, and Run containers—detailing their conversion logic, Java implementation snippets, performance advantages over traditional BitSets, and practical API usage for high‑performance, memory‑efficient big‑data applications.

Big DataContainersJava

0 likes · 18 min read

Understanding BitMap and Roaring BitMap: Principles, Containers, and Java API Usage