问Guava键，V>.put(键，值)没有向缓存中添加值；put()方法不起作用

EN

@Component
public class MyRateLimiter {

  public static final Logger LOGGER = LoggerFactory.getLogger(MyRateLimiter.class);
  public static long CACHE_SIZE = 1000L;
  public static long TIMEOUT = 10L;

  private static Cache<String, RateLimiter> cache = CacheBuilder.newBuilder()
        .maximumSize(CACHE_SIZE)
        .expireAfterWrite(TIMEOUT, TimeUnit.MINUTES)
        .build();

  public boolean tryAcquire(String key, double secondsBeforeNextOperation) {
      RateLimiter rateLimiter = cache.getIfPresent(key);
      if (rateLimiter == null) {
          rateLimiter = getNewRateLimiter(secondsBeforeNextOperation);
          cache.put(key, rateLimiter);  // <- This executes..
      }
      return rateLimiter.tryAcquire();  // <- But cache is still empty at breakpoint here
  }

  private RateLimiter getNewRateLimiter(double secondsBeforeNextOperation) {
      return RateLimiter.create(1 / secondsBeforeNextOperation);
  }

}

public boolean tryAcquire(String key, double secondsBeforeNextOperation) {
    RateLimiter rateLimiter = null;
    try {
        rateLimiter = cache.get(key, () ->
                getNewRateLimiter(secondsBeforeNextOperation));
    } catch (ExecutionException e) {
        LOGGER.warn("Throttling cache was not able to be read.");
        return false;
    }
    return rateLimiter.tryAcquire();  // <-- cache still empty at this breakpoint
}