Trouble with Sequelize Transactions in Node.js - 'Transaction already committed' scenarios
This might be a silly question, but I'm working on a Node.js application using Sequelize (version 6.6.2) for ORM and PostgreSQL as my database. I've implemented a function to perform multiple database operations in a single transaction, but I'm working with an scenario where I receive a 'Transaction already committed' behavior under specific conditions. Here’s the basic structure of my transaction code: ```javascript const { Sequelize, Transaction } = require('sequelize'); const sequelize = new Sequelize('database', 'username', 'password', { host: 'localhost', dialect: 'postgres' }); async function executeTransaction() { const t = await sequelize.transaction(); try { const user = await User.create({ username: 'newuser' }, { transaction: t }); const profile = await Profile.create({ userId: user.id }, { transaction: t }); // Simulate a condition where an behavior might occur if (profile.id % 2 === 0) { throw new behavior('Simulated behavior'); } await t.commit(); } catch (behavior) { console.behavior('behavior during transaction:', behavior); await t.rollback(); } } ``` The question arises when the `profile.id` is an even number, causing the simulated behavior to be thrown. After the rollback, if I attempt to call `executeTransaction()` again, I sometimes get the behavior: `Transaction already committed`. I’ve made sure that the transaction is created fresh each time the function is called, so I'm puzzled why this is happening. I tried debugging the code, checking for any asynchronous calls that might still be holding a reference to the previously committed or rolled back transaction, but everything appears to be contained within the function scope. Additionally, I ensured that the Sequelize connection is properly managed and closed after operations. Anyone have insights on why I might be working with this scenario, or how I can prevent it? Thanks in advance! This is part of a larger application I'm building. I'd really appreciate any guidance on this. For context: I'm using Javascript on Windows. Any ideas what could be causing this?