public void handlerUpstream(final String selectorId, final List<GrpcUpstream> upstreamList) {
        if (CollectionUtils.isEmpty(upstreamList)) {
            invalidate(selectorId);
            return;
        }
        grpcUpstreamCachedHandle.get().cachedHandle(selectorId, upstreamList);
        Consumer<Object> consumer = watchUpstreamListener.get(selectorId);
        if (Objects.nonNull(consumer)) {
            consumer.accept(System.currentTimeMillis());
        }
    }
handlerUpstream.

@param selectorId   selectorId
@param upstreamList upstreamList
shenyu-plugin/shenyu-plugin-proxy/shenyu-plugin-rpc/shenyu-plugin-grpc/src/main/java/org/apache/shenyu/plugin/grpc/cache/ApplicationConfigCache.java