在redis中获取lua中的当前日期和时间 [英] get current date and time in lua in redis

问题描述

如何获取Redis中嵌入的Lua中的当前日期/时间?

How can I get current date / time in Lua embedded in Redis?

我需要采用以下格式-YYYY-MM-DD，HH:MM:SS

I need to have it in following format - YYYY-MM-DD, HH:MM:SS

尝试使用os.date()，但无法识别它.

Tried with os.date() but it does not recognize it.

推荐答案

Redis'Lua沙箱只有少数几个库，而os不是其中之一.

Redis' Lua sandbox has only a handful of libraries, and os isn't one of these.

您可以像这样从Lua调用Redis TIME :

You can call the Redis TIME from Lua like so:

local t = redis.call('TIME')

但是，您将需要找到一种方法来将纪元转换为所需的格式，并且还要注意，它将阻止脚本执行任何写操作(因为这是不确定的命令).

However, you'll need to find a way to convert the epoch to the desired format and also note that it will stop you script from performing any writes (as it is a non-deterministic command).

更新:从Redis v3.2开始，存在基于效果(而不是基于代码)的脚本的新复制模式.使用此模式时，您实际上可以调用所有随机的，不确定的命令.有关更多信息，请访问 EVAL的文档页面

Update: as of Redis v3.2, there is a new replication mode for scripts that is effect-based (rather than code-based). When using this mode you can actually call all the random, non-deterministic commands. More information is at EVAL's documentation page

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