how to work Table - Lazy with PrimeNG Angular and Spring?

Previously I pulled all the data from my Bitacora table, but now I need to work with Lazy , so as not to saturate with the data when loading, followed by the example of PrimeNg Table-Lazy . but I do not know how to work in the Lazy of PrimeNg in the Spring part, and how to send it from Angular 6 . And I'm already two days with this situation and the project is delayed, I thank you beforehand.

This is my code.

list-itacora.omponent.ts  

 export class ListBitacoraComponent implements OnInit { 
public cols: any[]; //Columnas
    public bitacora: Array; //Se carga datos de Bitacora

    public bitacoraLazy: Array; //Se carga el Lazy de bitacora
    public totalRecords: number;
    public loading: boolean;
    constructor(private bitacoraService: BitacoraService) {}
public ngOnInit() {

        this.load();
        this.cols = [
          { field: 'id', header: 'ID' },
          { field: 'ip', header: 'Ip' },
          { field: 'usuario', header: 'Usuario' },
          { field: 'formulario', header: 'Formulario' },
          { field: 'accion', header: 'Accion' },
          { field: 'descripcion', header: 'Descripcion' },
          { field: 'nivel', header: 'Nivel' },
          { field: 'fecha', header: 'Fecha' }
        ];

        this.loading = true;
    }
 private load(): void{
        this.bitacoraService.get().subscribe(resp => {
          if (resp.code == OK) {
            this.bitacora = resp.value;

            this.messageValidate.showSuccess(BITACORA_SUCCESS_HEAD,resp.message);

            this.totalRecords = this.bitacora.length;

          }
          else {
            this.bitacora = [];
            this.messageValidate.showSuccess(BITACORA_ERROR_HEAD,resp.message);
          }
        });
    }
loadCarsLazy(event: LazyLoadEvent) {
      this.loading = true;
      setTimeout(() => {
        if (this.bitacora) {
            this.bitacoraLazy = this.bitacora.slice(event.first, (event.first + event.rows));
            this.loading = false;
            console.log("Exito lazy: "+this.bitacoraLazy);
        }else{
          console.log("Error Lazy: "+this.bitacoraLazy);
        }
    }, 1000);
  }

bitacora.service.ts

export class BitacoraService {
    private URL: string = URL_SERVE_BACKEND;  
    constructor(private http: HttpClient) { }
    public get(): Observable { 
        return this.http.get(this.URL + "/getBitacora");
    }
}

In the loadCarsLazy (event: LazyLoadEvent) method, I am working the same as nothing with the data already obtained in this.bitacora, but I would like to work directly with the backend

This is my code in the Backend Srping elk

BitacoraController.java

@RestController
public class BitacoraController {
    private static final Logger log = LogManager.getLogger(ClienteController.class);    
    @Autowired
    private BitacoraService bitacoraService;    
    protected ObjectMapper mapper;
    private String nombreFormulario = Formulario.REGISTRAR_CLIENTE.getNombre();
@GetMapping("/getBitacora")
    public BaseResponse get() {
        try {
            return new BaseResponse(HttpStatus.OK.value(), Mensajes.BITACORA_SUCCESS_GET, bitacoraService.get(), "");
        } catch (Exception e) {
            String message = Mensajes.BITACORA_ERROR_GET + nombreFormulario;
            log.error(BaseLog.error(message), e);
            return new BaseResponse(HttpStatus.NOT_ACCEPTABLE.value(), message, null, "");
        }
    }}

BitacoraDao.java

public interface BitacoraDao extends JpaRepository{

    /**
     * Se obtiene todos los datos de bitacora
     */
    @Query("SELECT b FROM MuBitacora b ORDER BY b.id DESC")
    List get(); 

}