What is your experience with PostgreSQL in commercial projects?

In commercial projects using Node.js and PostgreSQL, I worked with a database for storing and processing business data. My experience includes:

• Using the pg library for connecting and executing queries to PostgreSQL.
• Writing SQL queries for selecting, inserting, updating, and deleting data.
• Optimizing queries and indexes to improve performance.
• Using transactions to ensure data integrity.
• Working with database migrations using tools like knex or sequelize.
• Configuring connection pools for efficient connection management.

Example of a simple query using pg:

const { Pool } = require('pg');
const pool = new Pool({ connectionString: process.env.DATABASE_URL });

async function getUsers() {
  const client = await pool.connect();
  try {
    const res = await client.query('SELECT * FROM users');
    return res.rows;
  } finally {
    client.release();
  }
}