These are async functions - which means they happen after the data is already in the database. They basically act like a producer/consumer pipeline. Triggers h

These are async functions - which means they happen after the data is already in the database. They basically act like a producer/consumer pipeline. Triggers happen before the data is saved - which lets you change the request (or other data in the db) before it is saved or abort the request. Without it even trivial operations become hard - such as add a column from other places in the database, incermenting counters/cached aggregates, authorization that isn't role/access based, etc...