Laravel on My Bloghttps://thaig2pro.github.io/en/tags/laravel/Recent content in Laravel on My BlogHugo -- 0.146.0enMon, 28 Sep 2026 11:30:00 +0700I Wrote the Index Escalation Threshold as a Number, Then Measured It and Found It Off by 15x to 100xhttps://thaig2pro.github.io/en/posts/khong-them-index-viet-nguong-leo-thang-thanh-so/Mon, 28 Sep 2026 11:30:00 +0700https://thaig2pro.github.io/en/posts/khong-them-index-viet-nguong-leo-thang-thanh-so/A voucher filter merged without an index on a table another team owns, with a written trigger for asking them. A bench later showed the trigger's two clauses disagree by DB version.A Merge Has Exactly Two Parents. The Line From a Third Branch Took Down Every API Route.https://thaig2pro.github.io/en/posts/merge-conflict-copy-nhanh-thu-ba/Wed, 23 Sep 2026 14:42:00 +0700https://thaig2pro.github.io/en/posts/merge-conflict-copy-nhanh-thu-ba/A conflict in the HTTP kernel was resolved by copying the whole file from a third branch. One middleware line came along, its class did not, and /api/* returned 500 for almost 18 hours.The Import That Edited the Wrong Row for Years Because Two Tables Shared the Same IDshttps://thaig2pro.github.io/en/posts/bug-import-tra-nham-bang/Tue, 22 Sep 2026 17:00:00 +0700https://thaig2pro.github.io/en/posts/bug-import-tra-nham-bang/A quota import took a product id and looked it up in a different table. Auto-increment made the ids overlap, so every run changed exactly one row and nobody noticed.The Lock I Dropped During a Refactor, and the 1184 Green Tests That Didn't Noticehttps://thaig2pro.github.io/en/posts/lock-bi-danh-roi-khi-refactor/Mon, 21 Sep 2026 10:00:00 +0700https://thaig2pro.github.io/en/posts/lock-bi-danh-roi-khi-refactor/A row lock vanished during a refactor. The suite stayed green because sqlite silently ignores FOR UPDATE. How I made the lock visible to a test, and what it cost.