express-sweet - npm Package Versions

session_store: 'redis',
redis_host: 'redis://localhost:6379'

let transaction;
try {
  transaction = await BookModel.begin({
    isolationLevel: BookModel.Transaction.ISOLATION_LEVELS.REPEATABLE_READ,
    type: BookModel.Transaction.TYPES.DEFERRED,
  });
  const book = await BookModel.findOne({where: {id: 1}}, {transaction});
  book.title = 'When Im Gone';
  await book.save({transaction});
  await transaction.commit();

  // Load updated data.
  await book.reload();
} catch (error) {
  if (transaction)
    await transaction.rollback();
}