export type Settled<R> =
| { status: 'fulfilled'; value: R }
| { status: 'rejected'; reason: unknown };
export interface ConcurrencyOptions {
limit: number;
package com.example.demo.batch;
import com.example.demo.model.User;
import com.example.demo.model.UserDTO;
import org.springframework.batch.core.Job;
import org.springframework.batch.core.Step;