2026-03

DEV NOTE SERVER

Cloudflare × WordPress Complete Setup Guide [Updated for 2026]

From how to set up Cloudflare—which dramatically improves the loading speed and security of your WordPress site—to detailed caching configurations using Cache Rules, WAF protection, and solutions for common redirect errors, we’ll provide a thorough, practical guide.
2026.03.31
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DEV NOTE SERVER

The Fastest WordPress Optimization Setup: KUSANAGI + Cloudflare Achieves an 82% Improvement in TTFB in Real-World Tests

Exploring the fastest WordPress setup using a combination of VPS, KUSANAGI, and Cloudflare. Based on 13 real-world tests conducted over 12 hours, we confirmed an 82.89% improvement in desktop TTFB. We’ll introduce practical speed-optimization techniques—implementable without plugins—across three layers: server, CDN, and frontend.
2026.03.31
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DEV NOTE SERVER

WordPress Server Comparison: Recommended Shared and VPS Hosting Options by Use Case

This guide compares server options for WordPress, looking not only at the differences between shared hosting and VPS but also at each provider’s official pricing as of March 30, 2026, and benchmark results from our own site. It’s a comprehensive comparison guide that outlines the pros and cons of providers like Lolipop, Shin VPS, and KAGOYA CLOUD VPS, explains when shared hosting is sufficient, and identifies the signs that it’s time to switch to a VPS.
2026.03.30
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DEV NOTE SERVER

How to Solve Troublesome Email Issues During a VPS Migration Using Cloudflare and SMTP2GO: Separating Incoming Email for Your Custom Domain from Outgoing Email for WordPress

When migrating WordPress to a VPS, you need to decide in advance how to handle your email setup, separate from the website migration. In this article, we’ve organized options such as Cloudflare Email Routing, SMTP2GO, Brevo, Sakura Mailbox, Amazon SES, Google Workspace, and Microsoft 365, and summarized criteria for choosing based on the number of outgoing emails, the number of recipient accounts, and estimated costs.
2026.03.29
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DEV NOTE SERVER

A Complete Guide to WordPress Server Migration: A Professional’s Manual Migration from a Shared Server to a VPS [Summary Version]

Unlike the plugin-based migration methods typically used by beginners, this guide outlines the complete process for migrating WordPress from a shared server to a VPS, assuming a manual migration performed by professionals with a focus on reproducibility. In addition to SSH connections, wp-db export, rsync, wp-config.php configuration, and—where necessary—wp-db create, wp-db import, hosts file verification, and DNS switching, this guide also covers preparing to install WP-CLI on Lolipop and how to configure Xserver VPS.
2026.03.29
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DEV NOTE SERVER

What Is a VPS? A Complete Guide to the Differences Between VPS and Shared Hosting

This guide clearly explains what a VPS is and compares it to shared hosting in terms of flexibility, performance, cost, and operational burden. It serves as a comprehensive comparison guide covering when shared hosting is sufficient for WordPress operations, when you should switch to a VPS, the best timing for the switch, and how to interpret the 7-day benchmark results.
2026.03.29
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DEV NOTE TIPS

How to Fix the "EADDRINUSE" and "127.0.0.1:9292" Errors When Developing Shopify Themes

In this article, I’ll explain the causes of the “EADDRINUSE: address already in use 127.0.0.1:9292” error encountered when developing Shopify themes, how to check the port using `lsof` and terminate the process, and how to switch to a different port using the `--port` option.
2026.03.20
TIPS
DEV NOTE TIPS

Causes and Solutions When CSS Backward Compatibility Doesn't Work

We’ve compiled a guide on the causes and solutions for when CSS suffix matching doesn’t work, covering everything from compatibility with the `class` attribute to how to distinguish between word-based and suffix-based matching. We’ve also summarized the steps you should take first to troubleshoot the issue.
2026.03.20
TIPS
DEV NOTE TIPS

A Beginner's Guide to CSS Flexbox: A List of Properties and Practical Examples

This guide provides a comprehensive overview of CSS Flexbox, covering everything from the basics to the use of `flex-direction`, `justify-content`, `align-items`, and `flex-wrap`, as well as practical examples using colored boxes, navigation menus, card layouts, and forms, along with important considerations.
2026.03.20
TIPS
DEV NOTE TIPS

How to Create a Shortcut to Convert Text (Images) on Your Mac Screen to Text and Copy It

This guide provides a detailed explanation of how to create a custom efficiency tool that uses the Mac’s built-in “Shortcuts” app to instantly extract text (OCR) from images and videos on your screen and copy it. It’s significantly faster and more accurate than AI-powered OCR, and it even supports vertical text. No external apps are required—simply press a designated key to select the area, and the text is converted instantly. We’ll walk you through all the practical setup steps you’ll need for real-world use.
2026.03.19
TIPS
DEV NOTE TIPS

How to Use WP-CLI: Commands That Dramatically Streamline WordPress Management

From an overview of WP-CLI to installation instructions, bulk updates, and database "search-replace" operations, we’ll explain practical ways to use it to significantly streamline and speed up your WordPress operations and management.
2026.03.19
TIPS