redisTemplate.getExpire(key)

你可以通过调用`redisTemplate.getExpire(key)`方法来查询键的生命周期。这个方法将返回键的生存时间，单位由你指定的`timeUnit`参数决定。例如，你可以使用以下代码来查询键的生命周期：

long expire = redisTemplate.getExpire(key, timeUnit);

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#### 引用[.reference_title]
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