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軟體工程 Tricky number operation between SQLite and MySQL

Important: The result of 10/110 in SQLite is 0 and different with 0.09090909 when manipulating in MySQL. When testing Laravel Eloquent ORM both at local machine with SQLite and at remote machine with MySQL, you will find some execution results don’t same as expected at local machine. That’s is because SQLite won’t transform integer to real number automatically. Workaround: Add multiply 1.0 to ORM SQL statement and it becomes portable

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軟體工程 PHP 在 MySQL 的悲觀鎖寫法

例如我們要更新某一筆資料,使用悲觀鎖寫法 不囉唆,開始提供 PHP 範例寫法: // 查出單筆的資料 $sqlA = "SELECT * FROM your_table_name1 WHERE u_id = " . $obj->id . " FOR UPDATE "; // $obj->id 是我自定義的變數 //

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軟體工程 MySQL最佳化指南

網路上看到這個技術分享文章覺得不錯 [MySQL 優化大全:設定 my.cnf 優化指南] http://www.dk101.com/Discuz/viewthread.php?tid=115738#.VTOVThfs4e5 ,有參考用的參數值,以及文章最底下還有最佳化的建議方向,我看完之後,認為以前

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About

Howard Lee is a Staff Software Engineer based in Taipei, specializing in frontend architecture, CI/CD, and production-quality engineering for enterprise web applications. With 13+ years of software development experience, Howard has worked across B2B SaaS, IoT energy-management platforms, online travel marketplaces, and Android applications. His work focuses on modernizing large frontend systems, improving delivery quality, and building reliable product workflows with automated testing, observability, and practical cloud/platform integration. Core Expertise Frontend architecture: Angular 5 to 19 modernization, TypeScript, JavaScript, React, Next.

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