fix: api sleep 적용

mens-batch/src/main/java/kr/xit/biz/ens/service/EnsBatchStatusService.java

@@ -126,7 +126,7 @@ public class EnsBatchStatusService extends AbstractService implements IEnsBatchS
      */
     private void statusKakaopay(final SndngMssageParam dto) {
         final String url = apiHost + apiKkopayBulkStatus;
-        AtomicBoolean isFirst = new AtomicBoolean(false);
+        AtomicBoolean isFirst = new AtomicBoolean(true);
 
         final List<String> docsBinderUuids = mapper.selectKakaopayStatusTgts(dto);
         final List<List<String>> partitions = ListUtils.partition(docsBinderUuids, bulkKkoMaxCnt);
@@ -137,12 +137,12 @@ public class EnsBatchStatusService extends AbstractService implements IEnsBatchS
                 try {
                     if(!isFirst.get()){
                         Thread.sleep(300);
-                        isFirst.set(true);
                     }
                 } catch (InterruptedException e) {
                     Thread.currentThread().interrupt();
                     //throw BizRuntimeException.create(e.getMessage());
                 }
+                isFirst.set(false);
                 return apiWebClient.exchange(
                         url,
                         HttpMethod.POST,