code: @PUT
      public Response renewLease(
              @HeaderParam(PeerEurekaNode.HEADER_REPLICATION) String isReplication,
              @QueryParam("overriddenstatus") String overriddenStatus,
              @QueryParam("status") String status,
              @QueryParam("lastDirtyTimestamp") String lastDirtyTimestamp) {
          boolean isFromReplicaNode = "true".equals(isReplication);
          boolean isSuccess = registry.renew(app.getName(), id, isFromReplicaNode);
  
          // Not found in the registry, immediately ask for a register
          if (!isSuccess) {
              logger.warn("Not Found (Renew): {} - {}", app.getName(), id);
              return Response.status(Status.NOT_FOUND).build();
          }
          // Check if we need to sync based on dirty time stamp, the client
          // instance might have changed some value
          Response response;
          if (lastDirtyTimestamp != null && serverConfig.shouldSyncWhenTimestampDiffers()) {
              response = this.validateDirtyTimestamp(Long.valueOf(lastDirtyTimestamp), isFromReplicaNode);
              // Store the overridden status since the validation found out the node that replicates wins
              if (response.getStatus() == Response.Status.NOT_FOUND.getStatusCode()
                      && (overriddenStatus != null)
                      && !(InstanceStatus.UNKNOWN.name().equals(overriddenStatus))
                      && isFromReplicaNode) {
                  registry.storeOverriddenStatusIfRequired(app.getAppName(), id, InstanceStatus.valueOf(overriddenStatus));
              }
          } else {
              response = Response.ok().build();
          }
          logger.debug("Found (Renew): {} - {}; reply status={}", app.getName(), id, response.getStatus());
          return response;
      }
docs: A put request for renewing lease from a client instance.
  
  @param isReplication
  a header parameter containing information whether this is
  replicated from other nodes.
  @param overriddenStatus
  overridden status if any.
  @param status
  the {@link InstanceStatus} of the instance.
  @param lastDirtyTimestamp
  last timestamp when this instance information was updated.
  @return response indicating whether the operation was a success or
  failure.