我正在开发一种服务，它从SQS读取消息，进行一些处理并将结果发布到不同的服务。
当我最初开发此服务时，该服务工作得很好，但是在几天后（大约5天）我得到了这个例外：
com.amazonaws.http.AmazonHttpClient: Unable to execute HTTP request: Connection to https://sqs.us-east-1.amazonaws.com refused { org.apache.http.conn.HttpHostConnectException: Connection to https://sqs.us-east-1.amazonaws.com refused
at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:158)
at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:149)
at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:121)
at org.apache.http.impl.client.DefaultRequestDirector.tryConnect(DefaultRequestDirector.java:561)
at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:415)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:820)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:754)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:732)
at com.amazonaws.http.AmazonHttpClient.executeHelper(AmazonHttpClient.java:280)
at com.amazonaws.http.AmazonHttpClient.execute(AmazonHttpClient.java:165)
at com.amazonaws.services.sqs.AmazonSQSClient.invoke(AmazonSQSClient.java:869)
at com.amazonaws.services.sqs.AmazonSQSClient.getQueueAttributes(AmazonSQSClient.java:453)
我重新启动了该服务，它又开始工作了。我的问题是有人遇到过这个问题吗？如果是这样，处理此类异常的最佳方法是什么？
其他有趣的事实是几乎同时在服务的所有主机上发生了同样的异常。这是因为SQS中断还是预期会出现这种瞬时连接故障？