Firebase 的日期与时间戳 [英] Date vs Timestamp for Firebase

问题描述

您建议在日期时间和时间戳之间使用 Firebase 存储日期，为什么?

What would you recommend to store dates using Firebase between a datetime and a timestamp, and why?

推荐答案

使用时间戳，因为这与语言环境无关，并且不需要客户端之间的格式和解析协议.它也有点短.

Use a timestamp as this is locale-agnostic and does not require formatting and parsing agreements between clients. It's also a bit shorter.

此外，利用 Firebase.ServerValue.TIMESTAMP，而不是信任客户有他们的时钟设置正确.例如，如果客户的时钟差了 5 分钟，而您在聊天对话中使用了客户时间戳，然后渲染回消息，则显示的时间对于其他用户来说似乎是未来 5 分钟.

Furthermore, utilize Firebase.ServerValue.TIMESTAMP, rather than trusting the clients to have their clocks set correctly. If, for example, a client's clock is off by 5 minutes and you utilize the client timestamps in a chat conversation, then rendering back the messages, the time shown would appear to be 5 minutes in the future for other users.

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