blocks|key|1002192|text|同时也强烈推荐使用该模式。据我所知没有宝石，但这很容易做到。一个提示:包括自动将初始状态设置为开或关的功能：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1002193|feature_flag('third_party_tool',+:default+=>+true)+do
++++...+#+this+is+on+by+default
end|code-block|syntax|javascript|1002194|这将在部署时省去您的麻烦。|1002195|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

Also highly recommend the pattern. No gems that I know of, but it's pretty easy to do. One tip: include the ability to auto-set the initial state to either on or off:

<pre><code>feature_flag('third_party_tool', :default =&gt; true) do
 ... # this is on by default
end
</code></pre>

This will save you headaches at deployment time.

blocks|key|787998|text|如果你已经在使用Redis，请选择rollout。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|787999|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/jamesgolick/rollout^0|H|7|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]]]]

Check <a href="https://github.com/jamesgolick/rollout" rel="noreferrer">rollout</a> if you're already using Redis.

blocks|key|788061|text|我最近(10月9日，14日)看了一下可用的gems+-处于不同维护状态的9%2B+--并决定使用Flipper。Rollout也值得一看。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|788062|如果您希望使用自己的代码，那么Rollout的源代码只有200行，这是一个很好的起点。https://github.com/FetLife/rollout/blob/master/lib/rollout.rb|788063|这个铁路广播还有一个基本的示例http://railscasts.com/episodes/315-rollout-and-degrade|788064|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/jnunemaker/flipper|1|https://github.com/FetLife/rollout|2|https://github.com/FetLife/rollout/blob/master/lib/rollout.rb|3|http://railscasts.com/episodes/315-rollout-and-degrade^0|1A|7|0|1I|7|1|0|17|1P|2|0|F|1I|3|0^^$0|@$1|2|3|4|5|6|7|V|8|@]|9|@$A|W|B|X|1|Y]|$A|Z|B|10|1|11]]|C|$]]|$1|D|3|E|5|6|7|12|8|@]|9|@$A|13|B|14|1|15]]|C|$]]|$1|F|3|G|5|6|7|16|8|@]|9|@$A|17|B|18|1|19]]|C|$]]|$1|H|3|-4|5|6|7|1A|8|@]|9|@]|C|$]]]|I|$J|$5|K|L|M|C|$N|O]]|P|$5|K|L|M|C|$N|Q]]|R|$5|K|L|M|C|$N|S]]|T|$5|K|L|M|C|$N|U]]]]

I recently (9 Oct 14) took a look at the available gems - 9+ in various states of maintenance - and decided to go with <a href="https://github.com/jnunemaker/flipper" rel="nofollow">Flipper</a>. <a href="https://github.com/FetLife/rollout" rel="nofollow">Rollout</a> is also worth a look.

If you are looking to roll your own the source code for Rollout is only 200 lines and a good place to start.
<a href="https://github.com/FetLife/rollout/blob/master/lib/rollout.rb" rel="nofollow">https://github.com/FetLife/rollout/blob/master/lib/rollout.rb</a>

This railscast also has a barebones example <a href="http://railscasts.com/episodes/315-rollout-and-degrade" rel="nofollow">http://railscasts.com/episodes/315-rollout-and-degrade</a>

blocks|key|788262|text|我尝试了现在所有可用的flipper+gem(2015年3月)，并选择了ruby_flipper|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|788263|是的，它比其他的旧，但它允许你使用块和参数来计算功能状态，而且它非常简单。|788264|它不需要redis、任何数据库或其他任何东西。|788265|对于多服务器设置，我使用ENV变量。它实际上可以使用任何东西，因为它不会限制您(就像这里的其他选项一样)。|788266|我唯一不喜欢的是ruby_flipper用它的方法污染对象，但这很容易解决。|style|CODE|788267|总而言之:如果你需要一个轻量级的，可配置的，不受限制的解决方案，我投票给这个简单的gem。|788268|其他的在一些特定的领域很好，这一个是很好的开始。|788269|另一个好的候选者是accepted中提到的rollout。|788270|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/blaulabs/ruby_flipper|1|https://github.com/jamesgolick/rollout^0|10|C|0|0|0|0|0|8|C|0|0|0|L|7|1|0^^$0|@$1|2|3|4|5|6|7|13|8|@]|9|@$A|14|B|15|1|16]]|C|$]]|$1|D|3|E|5|6|7|17|8|@]|9|@]|C|$]]|$1|F|3|G|5|6|7|18|8|@]|9|@]|C|$]]|$1|H|3|I|5|6|7|19|8|@]|9|@]|C|$]]|$1|J|3|K|5|6|7|1A|8|@$A|1B|B|1C|L|M]]|9|@]|C|$]]|$1|N|3|O|5|6|7|1D|8|@]|9|@]|C|$]]|$1|P|3|Q|5|6|7|1E|8|@]|9|@]|C|$]]|$1|R|3|S|5|6|7|1F|8|@]|9|@$A|1G|B|1H|1|1I]]|C|$]]|$1|T|3|-4|5|6|7|1J|8|@]|9|@]|C|$]]]|U|$V|$5|W|X|Y|C|$Z|10]]|11|$5|W|X|Y|C|$Z|12]]]]

I tried all the flipper gems available now (March 2015) and chose the 
<a href="https://github.com/blaulabs/ruby_flipper" rel="nofollow">ruby_flipper</a>

Yes, it is older than others, but it allows you to use blocks and arguments to calculate feature state, and it is damn simple.

It does not require redis, any database or anything else.

For multi-server setup I use ENV variables. It's actually possible to use anything since it does not limit you (like the other options here do).

The only thing I don't like is that <code>ruby_flipper</code> pollutes Object with its methods, but that is easy to solve.

To summarize: if you need a lightweight, configurable and not limited solution, I vote for this simple gem.

Others are good in some specific area, this one is good to start with.

Another good candidate is <a href="https://github.com/jamesgolick/rollout" rel="nofollow">rollout</a> mentioned in accepted answer.

I have been inspired by how both <a href="http://code.flickr.com/blog/2009/12/02/flipping-out/" rel="noreferrer">Flickr</a> and <a href="http://blog.disqus.com/post/789540337/partial-deployment-with-feature-switches" rel="noreferrer">Disqus</a> use feature switches. They both blogged about them and how they work on both of their development blogs.

I was just wondering if there was a Ruby gem i'm missing or if anyone knows of a way to do this in Ruby? If there isn't anything, I'd hope to make my own and release it out in the wild. But I just wanted to ask here first because I haven't been able to find anything remotely similar to what both Flickr and Disqus achieve.

Ruby Feature Switches / Feature Flippers

数据库

服务器

Redis

我被和使用功能开关的方式所启发。他们都写了关于他们的博客，以及他们是如何在他们的开发博客上工作的。我只是想知道是否有我遗漏的Ruby宝石，或者是否有人知道在Ruby中可以做到这一点的方法？如果没有什么，我希望自己制作，并在野外发布。但我只想在这里先问一下，因为我还没有找到任何与Flickr和Disqus实现的功能类似的...

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