Leon's Insights
HomeArticlesAI HubArchiveTagsLinksAbout
Leon's Insights

Technical posts focused on deployment, troubleshooting, and development practice.

Quick Links

  • Articles
  • Categories
  • Tags
  • About

Focus Areas

  • AI
  • Engineering / Web
  • Digital Life

Β© 2024 - 2026 Leon's Insights. All rights reserved.

Notes are kept to move further.

Powered by Cloudflare

Articles

All articles and tutorials

17 articles

AI

Prompt for Reducing AI Rate in Papers

March 11, 2026
5 min read
2 views
Read article
Blog

Migrating Heroku Backend to Render

Why Render Before the migration, I compared several mainstream cloud platforms and ultimately chose Render.

March 8, 2026
5 min read
2 views
python3render+1
Read article
Final Exam Review

ABF507 Final Exam Review: Mock Exams + Critical Questions

ABF507 Mock Exam 1 - 8 Core Topics πŸ“‹ Exam Information | Item | Details | |------|---------| | Total Points | 100 | | Time Allowed | 120 minutes | | Questions | 8 Questions | |

January 25, 2026
30 min read
ABF507Mock Exam
Final Exam Review

ABW505 Mock Exams (1+2): Python & Machine Learning (Verified Answers)

ABW505 Mock Exam 1 - Python & Machine Learning πŸ“‹ Exam Information | Item | Details | |------|---------| | Total Points | 100 | | Time Allowed | 90 minutes | | Format | Closed boo

January 24, 2026
39 min read
ABW505Mock Exam
Final Exam Review

ABW505 Complete Question Bank: Python & Machine Learning (All English)

ABW505 Complete Question Bank - Python & Machine Learning > πŸ“š All code in this document has been verified and tested. Every answer includes detailed explanations and comments. --- πŸ“‹ Exam S

January 24, 2026
36 min read
ABW505Python
Final Exam Review

ABW501 Mock Exams (1+2): Analytics Edge (With Answers)

ABW501 Mock Exam 1 - Analytics Edge πŸ“‹ Exam Information | Item | Details | |------|---------| | Total Points | 100 | | Time Allowed | 90 minutes | | Format | Closed book, calculat

January 24, 2026
19 min read
1 views
ABW501Mock Exam
Final Exam Review

ABF507 Final Exam Review (Weeks 8–13) + High-Frequency Predictions

πŸ“š Exam Info - Format: 5 essay/short-answer questions - Coverage: Weeks 8–13 - Core Topics: GDP, utility, oligopoly, supply & demand, fiscal/monetary policy, trade, inequality, elasti

January 24, 2026
3 min read
1 views
ABF507Macroeconomics
Articles

Cloudflare Worker Cron Watchdog: SPOF Fix and Automatic DNS Failover for the Vercel Proxy Architecture

The third-party CNAME node pool in the optimized proxy setup is a hidden single point of failure (SPOF). This guide implements a zero-cost watchdog using Cloudflare Worker Cron Triggers: Google DoH serves as an external probe to monitor upstream health, with automatic DNS failover and recovery between the optimized CNAME and CF official IPs.

March 7, 2026
6 min read
CloudflareWorker
Articles

Cloudflare for SaaS + Worker: Optimal IP Routing and Edge Cache Proxy for Vercel

A practical guide on using Cloudflare for SaaS combined with Workers to solve Vercel's high latency and connection reset issues in mainland China. Build a centralized Worker routing hub to achieve multi-project domain dispatch, optimized IP ingress, and edge-node static asset caching.

March 6, 2026
7 min read
2 views
VercelCloudflare
Articles

Building a Cloudflare R2 Image Hosting: Complete Guide for Next.js Blogs

A practical guide documenting the complete process of implementing Cloudflare R2 as an image hosting solution for blogs, including automated upload scripts and best practices.

February 2, 2026
7 min read
CloudflareR2
Articles

Chrome Translate Caused React Hydration Errors β€” Diagnosis and Mitigation

How Chrome's built-in page translation can mutate the DOM, causing React hydration/runtime errors β€” investigation, mitigations we tried, and recommended approach.

January 31, 2026
5 min read
ReactInternationalization
Articles

Building a Personal Touch - How I Added Typewriter Effects and Smooth Animations to My Blog

Transforming a generic "Tech Blog" into "Leon's Insights" with smooth typewriter effects and performance-optimized animations. A complete guide to adding personality to your Next.js blog while maintaining optimal performance.

January 31, 2026
7 min read
TypeScriptReact
Articles

Complete Guide - Configuring Cloudflare Preferred IP Nodes on an IPv6 VPS

A comprehensive guide on how to set up a node supporting Cloudflare's preferred IP using Yongge's script on a Hax IPv6 Only VPS. This guide addresses three major issues - inability to download, missing environment, and failed certificate application.

January 31, 2026
5 min read
IPv6Cloudflare
Articles

NAT VPS Optimal Node Setup

Ultimate Guide: German NAT VPS / IPv6 Only Setup (Argo Tunnel + WARP + BBR) This guide will walk you through building a high-performance node on a German LXC NAT VPS (or IPv6-only VPS) using

January 29, 2026
6 min read
v2rayclash
Final Exam Review

ABW501 (Analytics Edge) Final Exam Review: Full Prediction Guide

πŸ“š Exam Info - Format: 4 structured questions - Coverage: Weeks 1, 2, 5, 7 + core analytics concepts - Tip: Keep answers concise; use tables/keywords; calculator allowed --- πŸ“Έ V

January 24, 2026
4 min read
Final ExamABW501
Final Exam Review

ABW505 Python & Predictive Analytics Final Exam: Ultimate Revision Guide

πŸŽ“ Official Exam Structure | Q | Points | Type | Coverage | |:--:|:--:|:--:|:--| | Q1 | 20 | Type 2 | Python basics: objects, variables, IO, list/tuple, functions, loops, conditions | | Q2

January 24, 2026
3 min read
Final ExamABW505
Articles

Enterprise AI Adoption Strategy Analysis

Research Background In today’s digital era, enterprises face a strategic crossroads in adopting AI. Some organizations embrace AI aggressively, focusing on automation and innovation; others take

January 17, 2026
11 min read
AI StrategyOrganizational Management
+7
Read article
+3
Read article
+3
Read article
+4
Read article
+4
Read article
+5
Read article
+5
Read article
+3
Read article
+2
Read article
+3
Read article
+3
Read article
+2
Read article
+2
Read article
+5
Read article
+3
Read article