请问HN：你们是如何在整个技术栈中处理数据保留的？
对于那些在多个系统（如 S3、数据库、缓存等）中构建 SaaS 的人来说，您是否有一种有效的方法来管理所有系统中的数据保留和删除？（尤其是当每个客户都有自定义政策时）<p>还是说这更多的是生命周期规则、定时任务和手动清理的混合？<p>您目前是如何处理这个问题的？我觉得这在向受监管行业销售时是一个障碍。
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For people building SaaS with data across multiple systems (S3, DBs, caches, etc), do you actually have a clean way to manage retention/deletion across all of them? (Especially when each customer has custom policies)<p>Or is it more a mix of lifecycle rules, cron jobs, and manual cleanup?<p>How are you doing this today? I feel like this is a blocker in enterprise deals when selling to regulated industries.