更新：不算快。
You know information and knowledge in this field update very fast.
你知道的，这个领域的信息和知识更新得很快。
The most important design issue for hosting fast-update historical data is the performance.
存储快更新历史数据最重要的设计问题就是性能。
How can I update my program fast and efficiently with share-it!
我怎样迅速的有效的在share - it ！更新我的项目？
How can I update my program fast and efficiently with share-it!
我怎样迅速的有效的在share - it ！更新我的项目？
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