blocks|key|270769|text|由于您的每个客户都需要更新数据库，我本能地认为我应该借助connection+pool+--有关更多信息，请参阅here+(对于使用twisted时经常出现的一些重要设计模式，建议使用整个文档)。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|270770|entityMap|0|LINK|mutability|MUTABLE|url|http://www.rexx.com/~dkuhlman/twisted_patterns.html#connection-pooling^0|S|F|1K|4|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@$9|O|A|P|B|C]]|D|@$9|Q|A|R|1|S]]|E|$]]|$1|F|3|-4|5|6|7|T|8|@]|D|@]|E|$]]]|G|$H|$5|I|J|K|E|$L|M]]]]

Since each of your clients needs to update a database, instinctively I think I'd piggyback off the <code>connection pool</code> -- see <a href="http://www.rexx.com/~dkuhlman/twisted_patterns.html#connection-pooling" rel="nofollow noreferrer">here</a> for more (the whole doc is recommended for some important design patterns that often emerge when using twisted).

blocks|key|9690|text|最好的选择就是在这里做显而易见的事情。不要有循环或重复的定时调用；只要有做正确事情的处理程序即可。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|9691|保留一个中央连接管理对象，并使事件处理方法为其提供继续运行所需的信息。当它启动时，建立5个传出连接。跟踪有多少正在进行中，维护一个包含它们的列表。当连接成功时(在connectionMade中)，更新列表以记住连接的新状态。当一个连接完成时(在connectionLost中)，告诉连接管理器；它的响应应该是删除那个连接，并在其他地方建立一个新连接。在中间，如何发出对所需名称的请求并将其填充到数据库中(在断开IRC连接之前等待数据库插入完成，很可能是通过等待Deferred从adbapi返回)应该是相当明显的。|offset|length|style|CODE|9692|entityMap^0|0|29|E|3E|E|6E|8|6N|6|0^^$0|@$1|2|3|4|5|6|7|J|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|K|8|@$D|L|E|M|F|G]|$D|N|E|O|F|G]|$D|P|E|Q|F|G]|$D|R|E|S|F|G]]|9|@]|A|$]]|$1|H|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|I|$]]

The best option is really just to do the obvious thing here. Don't have a loop, or a repeating timed call; just have handlers that do the right thing.

Keep a central connection-management object around, and make event-handling methods feed it the information it needs to keep going. When it starts, make 5 outgoing connections. Keep track of how many are in progress, maintain a list with them in it. When a connection succeeds (in <code>connectionMade</code>) update the list to remember the connection's new state. When a connection completes (in <code>connectionLost</code>) tell the connection manager; its response should be to remove that connection and make a new connection somewhere else. In the middle, it should be fairly obvious how to fire off a request for the names you need and stuff them into a database (waiting for the database insert to complete before dropping your IRC connection, most likely, by waiting for the <code>Deferred</code> to come back from <code>adbapi</code>).

blocks|key|1570031|text|我不知道你是否被迫使用Twisted，否则你可能会想尝试一下Gevent。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1570032|entityMap|0|LINK|mutability|MUTABLE|url|http://www.gevent.org/^0|U|6|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

I don't know if you are forced to use Twisted, otherwise you might want to give <a href="http://www.gevent.org/" rel="nofollow">Gevent</a> a try.

I'm trying to use Twisted in a sort of spidering program that manages multiple client connections. I'd like to maintain of a pool of about 5 clients working at one time. The functionality of each client is to connect to a specified IRC server that it gets from a list, enter a specific channel, and then save the list of the users in that channel to a database.

The problem I'm having is more architectural than anything. I'm fairly new to Twisted and I don't know what options are available for managing multiple clients. I'm assuming the easiest way is to simply have each ClientCreator instance die off once it's completed its work and have a central loop that can check to see if there's room to add a new client. I would think this isn't a particularly unusual problem so I'm hoping to glean some information from other peoples' experiences.

Managing multiple Twisted client connections

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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