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Zhuanzhuan Tech

A platform for Zhuanzhuan R&D and industry peers to learn and exchange technology, regularly sharing frontline experience and cutting‑edge topics. We welcome practical discussions and sharing; contact waterystone with any questions.

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Recent Articles

Latest from Zhuanzhuan Tech

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Zhuanzhuan Tech
Zhuanzhuan Tech
Jul 11, 2024 · Fundamentals

Using Java Topology Suite (JTS) for Spatial Geometry Operations and Fast Point‑in‑Polygon Checks

This article introduces the Java Topology Suite (JTS), explains its core geometry models, WKT format, spatial relations, and operations, and demonstrates how to efficiently determine whether a point lies within service coverage polygons using MBR filtering, spatial indexes such as R‑tree and Quadtree, and geometry repair techniques.

Geometry RepairJTSJava
0 likes · 17 min read
Using Java Topology Suite (JTS) for Spatial Geometry Operations and Fast Point‑in‑Polygon Checks
Zhuanzhuan Tech
Zhuanzhuan Tech
Jul 10, 2024 · Mobile Development

HarmonyOS Next Development Experience: Features, Differences from Android/iOS, and WebView Implementation

This article shares a comprehensive overview of HarmonyOS Next's key features, compares its development approach with Android and iOS, and details practical experiences, tools, and lessons learned while building the first version of the Zhaozhuan app, including WebView integration and future plans.

ArkUICross-PlatformHarmonyOS
0 likes · 20 min read
HarmonyOS Next Development Experience: Features, Differences from Android/iOS, and WebView Implementation
Zhuanzhuan Tech
Zhuanzhuan Tech
Jul 3, 2024 · Databases

Analysis of MySQL DELETE Deadlock and Locking Mechanisms

This article examines why identical DELETE statements on a MySQL table with a unique index can cause deadlocks, reviews InnoDB lock types, reproduces the issue with SQL and Java code, and discusses mitigation strategies such as version upgrades, isolation level changes, and distributed locks.

DELETEDeadlockInnoDB
0 likes · 14 min read
Analysis of MySQL DELETE Deadlock and Locking Mechanisms
Zhuanzhuan Tech
Zhuanzhuan Tech
Jul 2, 2024 · Mobile Development

Evolution and Design of the Lego Logging System for Mobile Applications

This article describes the four-stage evolution of the Lego client‑side logging system—covering its initial zero‑to‑one architecture, the separation of business and technical logs, real‑time reporting improvements, and the latest architecture redesign that boosts performance, reduces overhead, and provides a safe migration path.

architecturemigration strategymobile logging
0 likes · 14 min read
Evolution and Design of the Lego Logging System for Mobile Applications
Zhuanzhuan Tech
Zhuanzhuan Tech
Jun 26, 2024 · Backend Development

Refactoring the Game Business Product Update MQ Consumer: Architecture, Design, and Implementation

This article details the background, problem analysis, and comprehensive refactoring plan for a game business's product update MQ consumer, outlining architectural redesign using Flyweight and Strategy patterns, phased implementation, testing strategies, idempotent handling, monitoring, and the resulting 50‑80% reduction in downstream interface calls.

MQTestingbackend
0 likes · 13 min read
Refactoring the Game Business Product Update MQ Consumer: Architecture, Design, and Implementation
Zhuanzhuan Tech
Zhuanzhuan Tech
Jun 19, 2024 · Backend Development

Designing Visual Workflow Orchestration with LiteFlow: From Basic Components to Advanced AST Generation

This article explains how to use the LiteFlow rule‑engine framework to define reusable Java components, express execution flows with EL expressions, design a visual canvas that converts JSON into an abstract syntax tree, generate valid EL code via DFS, and manage workflow updates through push‑pull refresh mechanisms, while also outlining benefits and future plans.

ASTEL expressionJava
0 likes · 18 min read
Designing Visual Workflow Orchestration with LiteFlow: From Basic Components to Advanced AST Generation
Zhuanzhuan Tech
Zhuanzhuan Tech
Jun 12, 2024 · Databases

Designing a Scalable Persistence Layer: Sharding, Query Optimization, and Read/Write Splitting

This article shares a practical case study on how a coupon‑distribution system evolved from a single‑table design to a sharded, multi‑database architecture with query optimization, ElasticSearch integration, and read/write splitting to handle growing data volume, complex queries, and increasing request traffic.

ElasticsearchRead/Write SplittingScalability
0 likes · 12 min read
Designing a Scalable Persistence Layer: Sharding, Query Optimization, and Read/Write Splitting
Zhuanzhuan Tech
Zhuanzhuan Tech
Jun 5, 2024 · Backend Development

Strategy Center Design and System Architecture Using LiteFlow

This article outlines the background, objectives, and system design of a strategy center for a recycling business, detailing how the LiteFlow rule engine enables modular, hot‑plugable workflow configuration, visual canvas support, node editing, and future plans for data dictionaries, security, and visual configuration back‑ends.

LiteFlowstrategy center
0 likes · 8 min read
Strategy Center Design and System Architecture Using LiteFlow
Zhuanzhuan Tech
Zhuanzhuan Tech
May 23, 2024 · Backend Development

Design and Implementation of a Channel Reconciliation System for ZuanZuan Payments

This article details the background, architecture, data preparation methods, massive‑data handling strategies, verification processes, and error‑handling mechanisms of ZuanZuan's channel reconciliation system, highlighting design choices such as binlog ingestion, task‑driven bill downloads, sharding with Hive archiving, and MQ‑based reconciliation to ensure financial data consistency and safety.

HiveMQReconciliation
0 likes · 11 min read
Design and Implementation of a Channel Reconciliation System for ZuanZuan Payments