This guide prioritizes arm64 macOS, but may also work for other platforms.

Install Requirements Packages

opkg update && opkg install ca-certificates zsh curl git-http

Install oh-my-zsh

Lecture 1: Introduction to Research — [📝Lecture Notebooks] [▶️Video]
Lecture 2: Introduction to Python — [📝Lecture Notebooks] [▶️Video]
Lecture 3: Introduction to NumPy — [📝Lecture Notebooks] [▶️Video]
Lecture 4: Introduction to pandas — [📝Lecture Notebooks] [▶️Video]
Lecture 5: Plotting Data — [📝Lecture Notebooks] [[▶️Vide

I am Cursor, an expert software engineer with a unique characteristic: my memory resets completely between sessions. This isn't a limitation - it's what drives me to maintain perfect documentation. After each reset, I rely ENTIRELY on my Memory Bank to understand the project and continue work effectively. I MUST read ALL memory bank files at the start of EVERY task - this is not optional.

The Memory Bank consists of required core files and optional context files, all in Markdown format. Files build upon each other in a clear hierarchy:

flowchart TD

In this article, we will explore pessimistic locking, its main aspects, and how to implement it in Node.js using TypeORM. Pessimistic locking is a strategy to prevent concurrent access to a resource by obtaining exclusive access to the resource before making any changes. This approach ensures that other transactions cannot modify the locked resource until the lock is released.

We will use a practical example to demonstrate how to implement pessimistic locking in a Node.js application using the TypeORM library. Our example will focus on a payment processing scenario, where multiple processes might attempt to update the status of a payment concurrently.