feat: add an interval option to avoid triggering rate limit #185
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LGTM |
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在使用下载一些有很多课程的纯 Markdown 时发现在下载几十个之后会触发限流，检查源码发现如果是下载 PDF，每个页面打开后会等待一段时间，因此不太可能会触发限流，但下载 Markdown 的时候没有这个长的间隔，只有一个2秒内的随机间隔。
因此增加了一个 interval 选项，以秒为单位，在每篇文章之间间隔 interval 秒 + 2秒内的 jitter 来避免触发限流限制。默认为0秒秒，兼容以前的状态。实测 interval = 5时，下载120篇左右的文章不会触发限流。