why publish RefreshRoutesResultEvent first

[wangfeixianggithub]

when I consume the RefreshRoutesResultEvent, I try to get flux<Route> by the getRoutes() method but the cache miss. so there's a question ,why publish RefreshRoutesResultEvent first in CachingRouteLocator？

@Override
	public void onApplicationEvent(RefreshRoutesEvent event) {
		try {
			fetch().collect(Collectors.toList()).subscribe(
					list -> Flux.fromIterable(list).materialize().collect(Collectors.toList()).subscribe(signals -> {
						applicationEventPublisher.publishEvent(new RefreshRoutesResultEvent(this));
						cache.put(CACHE_KEY, signals);
					}, this::handleRefreshError), this::handleRefreshError);
		}
		catch (Throwable e) {
			handleRefreshError(e);
		}
	}

Describe the solution you'd like reverse the order