Purging residual data from instance resources before they are re-allocated.
在重新分配实例资源之前，彻底清除其中的残留数据。
Updating data, such as purging old data or updating values based on conditions.
更新数据，比如清洁旧数据库或基于条件更新值。
The filtering rules should also include automatic purging or backup of aged data and a mechanism to expire large XML files sooner.
筛选规则还应该包括对旧数据的自动清除或者备份、以及使大的XML文件不久后过期的机制。
Consider, for example, the purging of data.
以数据清除为例，我们来考虑一下这个问题。
Consider, for example, the purging of data.
以数据清除为例，我们来考虑一下这个问题。
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