¿Cuál es la diferencia entre .save() e .insert() en el Repository al querer crear un nuevo registro?

En el código, el comentario para .insert() es:

 // From https://github.com/typeorm/typeorm/blob/b6c828cc6c9786c155165d97e1f21af7cf423075/src/repository/Repository.ts#L224-L232 /** * Inserts a given entity into the database. * Unlike save method executes a primitive operation without cascades, relations and other operations included. * Executes fast and efficient INSERT query. * Does not check if entity exist in the database, so query will fail if duplicate entity is being inserted. */ insert(entity: QueryDeepPartialEntity<Entity>|(QueryDeepPartialEntity<Entity>[])): Promise<InsertResult> { return this.manager.insert(this.metadata.target as any, entity); }

En el código, el comentario para .save() es:

 // From https://github.com/typeorm/typeorm/blob/b6c828cc6c9786c155165d97e1f21af7cf423075/src/repository/Repository.ts#L140-L151 /** * Saves a given entity in the database. * If entity does not exist in the database then inserts, otherwise updates. */ save<T extends DeepPartial<Entity>>(entity: T, options?: SaveOptions): Promise<T & Entity>; /** * Saves one or many given entities. */ save<T extends DeepPartial<Entity>>(entityOrEntities: T|T[], options?: SaveOptions): Promise<T|T[]> { return this.manager.save<Entity, T>(this.metadata.target as any, entityOrEntities as any, options); }

no entiendo que hace:

A diferencia del método save, ejecuta una operación primitiva sin cascadas, relaciones y otras operaciones incluidas.

Del comentario .insert()

medio