Ruby mysql mysql2 和 datamapper 如何重新连接
我有一些东西在不断地运行，进行定期查询。我使用了 DataMapper（尽管我通过它执行原始 SQL）和 mysql2。
无论使用哪一种，它们偶尔都会停止工作。我相信这是因为服务器出现问题或其他原因。
尽管如此，一切都会停止。每个线程上的执行仅在查询行处停止，这就是结束。
有没有办法告诉他们重新连接？或者，如果做不到，我可以自己做吗？我一直在尝试使用超时，但超时似乎也有点冻结（它进入块并且永远不会离开，既不是通过引发错误，也不是通过自然完成）。
我只是希望查询（如果失败）在下一次继续传递，重试，并在必要时重新连接到服务器。我该怎么做？
I have something running constantly doing periodic queries. I have used both DataMapper (though I'm doing raw SQL through it) and mysql2.
Using either, occasionally they stop working. I believe it's because the server hiccuped or something.
Nonetheless, everything grinds to a halt, then. Execution on each thread just stops at the query line and that's the end of that.
Is there a way to tell them to reconnect? Or, failing that, can I do it myself. I've been trying using timeout, but timeout seems to sort of freeze as well (it enters the block and never leaves, neither via raising an error nor through natural completion).
I simply want the queries, if they fail, to pass on by and on the next time around, try again, reconnecting to the server if necessary. How can I do this?
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