blocks|key|5271186|text|首先，您无法自行复制NewRelic的功能。忽略服务器端，rpm+Gem是一个相当复杂的软件，做了很多事情。如果你想看看它是如何连接到Rails系统的，请使用Have+a+look+at+the+source。源代码值得一读，因为在将数据发送回服务器之前，它在数据的线程化和编组方面做了一些很酷的事情。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|5271187|如果你想要一个替代品，因为Newrelic很昂贵(当然，它的功能很棒)，那么可以看看Github上的FreeRelic项目。|5271188|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/newrelic/rpm|1|https://github.com/devmen/FreeRelic/^0|27|P|0|0|1E|9|1|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@$A|Q|B|R|1|S]]|C|$]]|$1|D|3|E|5|6|7|T|8|@]|9|@$A|U|B|V|1|W]]|C|$]]|$1|F|3|-4|5|6|7|X|8|@]|9|@]|C|$]]]|G|$H|$5|I|J|K|C|$L|M]]|N|$5|I|J|K|C|$L|O]]]]

First up, you will not manage to duplicate the functionality of NewRelic on your own. Ignoring the server-side, the rpm Gem is a pretty complex piece of software, doing a lot of stuff. <a href="https://github.com/newrelic/rpm" rel="noreferrer">Have a look at the source</a> if you want to see how it hooks into the Rails system. The source is a worth a read, as it does some cool stuff in terms of threading and marshaling of the data before sending it back to their servers.

If you want a replacement because Newrelic is expensive (and rightly so, it's awesome at what it does), then have a look at the <a href="https://github.com/devmen/FreeRelic/" rel="noreferrer">FreeRelic</a> project on Github.

blocks|key|3160087|text|他们大量使用面向方面的编程概念和反射来拦截原始方法调用，并在此基础上添加插装。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3160088|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

They are using ASPECT ORIENTED PROGRAMMING CONCEPTS AND Reflection heavily for Intercepting original method call and adding instrumentation around that.

blocks|key|3160145|text|在每个“收获时间”(默认为60秒)之后，它会向NR服务发送一个包含此数据的post请求。您还可以使用Custom+Metrics、Custom+Events定制所需的数据。也可以使用NRQL进行查询并使用它构建图形(就像在Graphana中所做的那样)。他们也有一个针对Wordpress的定制服务，但在一开始有点混乱。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3160146|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

In a general way, New Relic's gem inserts kinda middleware in your web framework, and collects data from your endpoint (think as a rails route) until it's response. After every "harvesting time" (defaults to 60 seconds), it sends a post request to NR services with this data. 
You can also tailor data you need with Custom Metrics, Custom Events.
Is also possible to do queries with NRQL and build graphs with that (like you would do in Graphana).
They have a customize service for Wordpress too, but is a bit messy in the start.
Some options if you want to save some money is configure cloudwatch + datadog, but I would give a shot to their service if uptime is crucial for your app.

blocks|key|286433|text|对于rails解决方案，您可以简单地实现更详细的日志记录级别(开发/调试级别)，并查询production.log文件中的特定事件、计时等|type|unstyled|depth|inlineStyleRanges|entityRanges|data|286434|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

For a rails solution you could simply implement a more verbose logging level (development/debug level) and interrogate the production.log file for specific events, timings etc

blocks|key|2194469|text|对于Java，他们将Java代理附加到JVM，该代理拦截并监视方法调用。您可以使用AspectJ来复制相同的行为，并将每个方法调用记录到您想要的任何位置，比如创建自定义云监控指标。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2194470|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

For Java they are attaching a Java agent to JVM which intercepts method calls and monitor them. You can use AspectJ to replicate the same behaviour and log every method call to wherever you want, let's say create custom Cloudwatch metrics.

blocks|key|5271201|text|对于Java，它是字节码摄取。他们“破解”你的应用服务器的关键方法，并在其中添加他们的代码。然后，他们将相关的交易信息发送到他们的服务器，聚合这些信息，您就可以看到摘要。这是一个非常复杂的过程，所以我不认为一个开发人员就能实现它。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|5271202|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

In case of Java it's bytecode ingestion. They "hacking" the key methods of your application server and add their code in it. Then they send relevant transaction info to their server, aggregating it and you can see the summary. It's really complicated process so I don't think one dev can implement it.

blocks|key|5271349|text|type|unstyled|depth|inlineStyleRanges|entityRanges|data|5271350|5271351|这些代理已经得到了增强，可以自动将JavaScript注入到HTML页面中，因此使用RUM就像选中New+Relic控制面板上的复选框一样简单。但是，如果您喜欢更多的控制，您可以使用New+Relic的代理API来生成JavaScript，从而准确地控制何时何地包含页眉和页脚脚本。|5271352|entityMap^0|0|0|0^^$0|@$1|2|3|-4|4|5|6|F|7|@]|8|@]|9|$]]|$1|A|3|-4|4|5|6|G|7|@]|8|@]|9|$]]|$1|B|3|C|4|5|6|H|7|@]|8|@]|9|$]]|$1|D|3|-4|4|5|6|I|7|@]|8|@]|9|$]]]|E|$]]

<ul>
<li>If you’re already familiar with New Relic’s application monitoring
then you probably know about New Relic’s agents that run in-process
on web apps collecting and reporting all sorts of details about whats
happening in the app. RUM leverages the agents to dynamically inject
JavaScript into pages as they are built. The injected JavaScript
collects timing information in the browser and contains details that
identify the specific app and web transaction processed on the
backend as well as how time was spent in the app for each request.
When a page completes loading in an end user’s browser, the
information is sent back to New Relic asynchronously – so it doesn’t
effect page load time.

You can turn RUM on/off via your application settings in New Relic.
As well, you can turn RUM on/off via the agent’s configuration file
(newrelic.yml – a ‘browser_monitoring auto_instrument’ flag has been
introduced).

The agents have been enhanced to automatically inject JavaScript into
the HTML pages so using RUM is as simple as checking the checkbox on
the New Relic control panel. However, if you’d prefer more control,
you can use New Relic’s Agent API to generate the JavaScript and thus
control exactly when and where the header and footer scripts are
included.</li>
</ul>

How can New Relic tap into my app with a simple install? How does it know all the methods, requests, etc?

It works for RoR, PHP, etc.

Can anyone explain the technology behind it? I'm interested in tapping into my Rails app, but I want to do so smoothly like New Relic.

Thanks

How does New Relic work?

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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New Relic如何通过简单的安装进入我的应用程序？它如何知道所有的方法、请求等？它适用于RoR，PHP等。有人能解释一下它背后的技术吗？我对使用我的Rails应用程序很感兴趣，但我想像New Relic一样顺利地使用它。谢谢

问New Relic是如何工作的？
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