Writing by Aaron Li, a software engineer working on backend systems, cloud infrastructure and AI agents.https://aaronli.run/https://aaronli.run/posts/durability/https://aaronli.run/posts/durability/如何透過 Durable Queue、Persistent Message 與 Publisher Confirms 三者搭配，確保訊息在 Broker 重啟後不遺失Thu, 11 Jun 2026 07:12:00 GMThttps://aaronli.run/posts/introduction/https://aaronli.run/posts/introduction/介紹 Message Queue 的概念，以及 RabbitMQ 的核心組成元件：Producer、Broker（Exchange、Binding、Queue）Wed, 10 Jun 2026 06:32:00 GMThttps://aaronli.run/posts/deep-dive-into-ai-agent/https://aaronli.run/posts/deep-dive-into-ai-agent/隨著 LLM 越來越聰明，所支援的 Context Window 越來越大，相關的應用開始從單次的 LLM chat 到現在每間公司都在嘗試產品化的 AI Agent。 Agent 本身到底是什麼呢？Sat, 06 Jun 2026 08:30:00 GMThttps://aaronli.run/posts/upgrade-rails-7-ruby-3/https://aaronli.run/posts/upgrade-rails-7-ruby-3/從 Rails 6.1 升級到 7.1, ruby 2.7.8 升級到 3.3.4Wed, 25 Dec 2024 18:21:12 GMThttps://aaronli.run/posts/rails-architecture/https://aaronli.run/posts/rails-architecture/什麼是 MVC 架構？ 為什麼會有 Fat Model, Fat Concern, Fat Controller 的狀況出現, 又會如何解決相關問題呢？Fri, 25 Oct 2024 12:51:42 GMThttps://aaronli.run/posts/frozen-string-literal/https://aaronli.run/posts/frozen-string-literal/什麼是 frozen_string_literal？Wed, 23 Oct 2024 13:11:32 GMThttps://aaronli.run/posts/symbol-vs-string/https://aaronli.run/posts/symbol-vs-string/Ruby 中的 Symbol 和 String 有什麼不同？什麼時候應該用 Symbol？Tue, 22 Oct 2024 17:21:42 GMThttps://aaronli.run/posts/transaction/https://aaronli.run/posts/transaction/Transaction 是可以 commit 或 rollback 的原子工作單位, 當在一個 transaction 內對資料庫進行多次修改, 在提交 transaction 時所有更改都成功或者都失敗Wed, 23 Nov 2022 11:51:42 GMThttps://aaronli.run/posts/mysql-index/https://aaronli.run/posts/mysql-index/什麼是MySQL索引, 索引的種類, 索引的缺點, 如何優化索引，索引如何失效Tue, 22 Nov 2022 08:34:12 GMThttps://aaronli.run/posts/event-loop/https://aaronli.run/posts/event-loop/Understanding JavaScript's Event Loop, call stack, microtasks, and macrotasks for asynchronous programmingThu, 13 Oct 2022 14:27:55 GMThttps://aaronli.run/posts/closure/https://aaronli.run/posts/closure/Understanding JavaScript Closures - lexical environment, scope chain, and practical examplesWed, 12 Oct 2022 15:26:19 GMThttps://aaronli.run/posts/promise/https://aaronli.run/posts/promise/Understanding JavaScript Promises, async operations, and Promise methods like all, race, any for handling asynchronous programmingTue, 11 Oct 2022 13:01:08 GMT