> For the complete documentation index, see [llms.txt](https://developers.oxylabs.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developers.oxylabs.io/products/cn/dai-li/isp-proxies/fair-usage-policy.md).

# 公平使用政策

为确保服务稳定并防止任何潜在的流量滥用，Oxylabs 会限制所提供的 ISP代理 的并发会话数。可用的并发会话数取决于每个 ISP代理 在一个计费周期内使用的流量量：

* **在每个 ISP代理 每月使用量达到 50 GB 之前**，每个已购买的 ISP代理 的可用并发会话数将限制为 100 个并发会话（例如，购买 100 个 ISP代理 意味着在达到 5,000 GB 使用量之前，可用 10,000 个并发会话）；
* **如果每个 ISP代理 的使用量达到 50 GB**，在当前计费周期剩余时间内，每个 ISP代理 的可用并发会话数将降至 10 个并发会话（例如，购买 100 个 ISP代理 并达到 5,000 GB 的使用量，意味着在当前计费周期结束前可用 1,000 个并发会话）。

代理 使用量会自动跟踪，并在达到数据配额的 80% 和 100% 时发送电子邮件通知。一旦达到公平使用限额的 100%，并发会话限制将自动生效。

如果您需要任何帮助，请随时通过以下方式联系我们 [**support@oxylabs.io**](mailto:support@oxylabs.io) 或通过我们 [**网站上的 24/7 在线聊天**](https://oxylabs.io/).


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