typescript - Typeorm just run update if entity has changed

Question

i have a task which is getting data from an api and stores it into my DB. I the entities are pretty big, but i can identify if them easily by an id. The biggest performance killer for me is now, that it runs many updates even if the object didn't change. I run the save operation with reload disabled. I need something like: AfterLoad: save entity state (maybe the stringified JSON) BeforeUpdate: Compare the new hash against the old hash - if no changes, don't run the update.

Is there anything like that available? Or is it possible to prevent the update in the "BeforeUpdate" method?

Thank you

question from:https://stackoverflow.com/questions/65858116/typeorm-just-run-update-if-entity-has-changed

Answer 1

I think you're looking for TypeORM hooks, but I'm not sure.