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Zhengtong Technical Team

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Latest from Zhengtong Technical Team

29 recent articles

Zhengtong Technical Team

Jul 1, 2020 · Frontend Development

Design and Implementation of a Dynamic Printing Template System Using OnlyOffice Plugin

This article outlines the requirements, common approaches, drawbacks, and a comprehensive solution for creating flexible, visual printing templates in administrative workflows by leveraging OnlyOffice's extensible API, a custom JavaScript plugin, and backend integration to enable real‑time preview, variable insertion, and fine‑grained style control.

JavaScriptOnlyOfficePrinting

0 likes · 9 min read

Design and Implementation of a Dynamic Printing Template System Using OnlyOffice Plugin

Zhengtong Technical Team

Jun 5, 2020 · Artificial Intelligence

Design and Implementation of an Intelligent Chatbot System: Intent Recognition Algorithms and Architecture

The article details the architecture and intent recognition mechanisms of an AI chatbot for urban management, exploring regex matching, Levenshtein distance, and Naive Bayes classification, alongside dynamic model training and frontend data rendering strategies.

AI System DesignChatbot ArchitectureLevenshtein distance

0 likes · 11 min read

Design and Implementation of an Intelligent Chatbot System: Intent Recognition Algorithms and Architecture

Zhengtong Technical Team

May 20, 2020 · Cloud Native

Case Study: Full Cloud Migration of the "Smart Citizen Pass" Mini‑Program Using Kubernetes and Cloud Services

This article details the background, initial ECS‑based deployment, performance bottlenecks during rapid user growth, and the comprehensive cloud‑native migration—including DNS load balancing, managed Kubernetes, CDN acceleration, RDS/Redis replacement, and NAS/OSS storage—resulting in significant scalability and operational improvements for the Smart Citizen Pass mini‑program.

CDNKubernetesPerformance Optimization

0 likes · 15 min read

Case Study: Full Cloud Migration of the "Smart Citizen Pass" Mini‑Program Using Kubernetes and Cloud Services

Zhengtong Technical Team

May 18, 2020 · Backend Development

Implementing Full Data Change Auditing with Spring AOP and Custom Annotations

This article explains how to achieve non‑intrusive, efficient full‑record data change auditing in a Spring‑based backend by leveraging Aspect‑Oriented Programming, custom annotations, and reflection to automatically capture before‑and‑after values for both primary and related tables.

BackendData AuditingJava

0 likes · 16 min read

Implementing Full Data Change Auditing with Spring AOP and Custom Annotations

Zhengtong Technical Team

May 15, 2020 · Frontend Development

Volume Rendering Techniques in 3D GIS: Triangulation Mesh, Voxel Grid, and Volume Rendering

This article introduces three core 3D volume‑display techniques—triangulation mesh, voxel‑grid, and volume rendering—explaining their principles, advantages, disadvantages, suitable scenarios, and implementation details such as WebGL shaders and instanced drawing for GIS visualisation.

3d-visualizationGISGraphics

0 likes · 12 min read

Volume Rendering Techniques in 3D GIS: Triangulation Mesh, Voxel Grid, and Volume Rendering

Zhengtong Technical Team

Apr 30, 2020 · Big Data

Design and Performance Optimization of an Intelligent Search System for City Operations Big Data Center

This article describes the background, requirement‑driven prototype design, Elasticsearch‑based query‑DSL selection, and extensive performance tuning—including hardware configuration, indexing parameters, JVM and garbage‑collector adjustments—that enabled real‑time ingestion of hundreds of thousands of records and sub‑second search responses for a city‑wide data platform.

Big DataCluster TuningElasticsearch

0 likes · 12 min read

Design and Performance Optimization of an Intelligent Search System for City Operations Big Data Center

Zhengtong Technical Team

Apr 17, 2020 · Frontend Development

Creating a 3D Orbit Visualization Component

This article details the technical process of creating a 3D visualization component for city management systems, covering HTML structure, CSS animations, and mathematical calculations for distributing elements on a circular path.

3D graphicsComponent DesignData visualization

0 likes · 11 min read

Creating a 3D Orbit Visualization Component

Zhengtong Technical Team

Mar 27, 2020 · Cloud Computing

Case Study: Seamless Migration of Alibaba Cloud Services and Kubernetes Cluster to a New Account and Region

This article details a comprehensive, day‑long migration of a WeChat mini‑program's backend—including Kubernetes, RDS, Redis, NAS, CDN and SNAT services—from an Alibaba Cloud A account in Hangzhou to a B account in Beijing, emphasizing pre‑planning, resource optimization, DTS‑based data sync, and zero‑downtime cut‑over.

Alibaba CloudDTSDevOps

0 likes · 13 min read

Case Study: Seamless Migration of Alibaba Cloud Services and Kubernetes Cluster to a New Account and Region

Zhengtong Technical Team

Dec 20, 2019 · Big Data

Optimizing Trajectory Visualization: From Data Collection to Rendering

This article examines the challenges of mobile‑based trajectory tracking in city management and presents a comprehensive set of optimizations—including adaptive GPS sampling, keep‑alive strategies, accuracy enhancements, algorithmic fitting, and cinematic animation effects—to produce smooth, accurate, and visually appealing trajectory displays at scale.

GPSKalman FilterTrajectory

0 likes · 11 min read

Optimizing Trajectory Visualization: From Data Collection to Rendering