resumableServices.java

// org.yournamespace.Store.java
@Service
public class Store {
  private Map<String, Info> fileState;
  
  public Store(Map fileState) {
    this.fileState = fileState;
  }
  
  @Bean
  public void update(Info info) {
    // ...
  }
  
  @Bean
  public void peek(Info info) {
    // ...
  }
}

// org.yournamespace.WritingUtil.java
@Service
public class WritingUtil {
  private Info fileInfo;
  
  @Bean
  public WritingUtil(Info info) {
    this.fileInfo = info;
  }
  
  @Bean
  public Long write() {
    // ...
  }
  
  @Bean
  public Long peek() {
    // ...
  }
}