如果它可以识别正确的节点，那么它会将请求转发给该节点，等待来自该节点的响应，然后将数据返回给客户端。
If it can identify the correct node, it forwards the request to that node, waits for a response from the node, and returns the data to the client.
数据完整性在这样的情况下仍然得到维护，但相关的等待时间可能会严重影响流量和响应时间。
Data integrity is still maintained in such situations, but the associated wait times can severely impact throughput and response times.
在Ajax出现之前，对于所有数据请求，用户都要等待服务器响应。
Before Ajax, all data requests implied standing by, waiting for the server to answer.
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