blocks|key|1802368|text|中间件的一些例子:+CORBA、远程方法调用(RMI)、...|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1802369|上面提到的示例都是一些软件，允许您处理不同进程之间的通信(或者运行在同一台机器上，或者分布在例如互联网上)。|1802370|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|F|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|G|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|H|8|@]|9|@]|A|$]]]|E|$]]

Some examples of middleware: CORBA, Remote Method Invocation (RMI),...

The examples mentioned above are all pieces of software allowing you to take care of communication between different processes (either running on the same machine or distributed over e.g. the internet).

blocks|key|1802483|text|假设你的公司生产4种不同的产品，你的客户有另外3种不同的产品来自另外3家不同的公司。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1802484|有一天，客户想，为什么我们不把我们所有的系统集成到一个巨大的系统中。10分钟后，他们的IT部门表示，这将需要2年时间。|1802485|您(明智的开发人员)说，为什么我们不将所有不同的系统集成在一起，让它们一起工作？盯着你看的客户经理。你继续说，我们将使用中间件，我们将研究所有不同系统的输入/输出，他们使用的资源，然后选择合适的中间件框架。|1802486|还在向非技术经理解释|1802487|使用中间件框架，第一个系统将产生X个东西，系统Y和Z将消耗这些输出，依此类推。|1802488|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|M|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|N|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|O|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|P|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|K|$]]

Lets say your company makes 4 different products, your client has another 3 different products from another 3 different companies.
Someday the client thought, why don't we integrate all our systems into one huge system. Ten minutes later their IT department said that will take 2 years.
You (the wise developer) said, why don't we just integrate all the different systems and make them work together? The client manager staring at you... You continued, we will use a Middleware, we will study the Inputs/Outputs of all different systems, the resources they use and then choose an appropriate Middleware framework.
Still explaining to the non tech manager 
With Middleware framework in the middle, the first system will produce X stuff, the system Y and Z would consume those outputs and so on.

blocks|key|2016143|text|从我自己的webwork经验来看，中间件是用户(+web浏览器)和后端数据库之间的东西。是软件接收用户输入的内容(例如:+iPads的订单，执行一些神奇的业务逻辑，即检查是否有足够的iPads可用来满足订单)，并更新后端数据库以反映这些更改。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2016144|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|$]]

From my own experience with webwork, a middleware was stuff between users (the web browser) and the backend database. It was the software that took stuff that users put in (example: orders for iPads, did some magical business logic, i.e. check if there are enough iPads available to fill the order) and updated the backend database to reflect those changes.

blocks|key|2016329|text|中间件是软件的一个通用术语，它用来“粘合”分离的、通常是复杂的和已经存在的程序。一些经常与中间件连接的软件组件包括企业应用程序和Web服务。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2016330|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|$]]

Middleware is a general term for software that serves to "glue together" separate, often complex and already existing, programs. Some software components that are frequently connected with middleware include enterprise applications and Web services.

blocks|key|1802748|text|我一直认为它是我不得不安装的最老的软件。整个应用程序使用一个web服务器、一个数据库服务器和一个应用程序服务器。web服务器是数据和应用程序之间的中间件。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1802749|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|$]]

I always thought of it as the oldest software I have had to install. The total app used a web server, a database server, and an application server. The web server being the middleware between the data and the app.

blocks|key|1802804|text|它只是一个软件或工具，您的应用程序在其上执行和应用程序功能方面的高可用性，可伸缩性，与其他软件或系统集成，而无需担心您的应用程序级别的代码更改。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1802805|例如:运行应用程序的操作系统需要更改in地址，您不必在代码中担心这一点，它是您可以简单地更新配置的中间件堆栈。|1802806|示例2:你遇到了运行时内存分配的问题，并感觉到你的应用程序的使用量增加了，除非你的代码中有一个bug或瓶颈，否则你不必对此有太多的了解，这很容易通过调优你的应用程序运行的中间件软件配置来实现。|1802807|示例3:你有多个不同的软件，你需要它们相互通信，或者以所有系统都能理解的通用格式发送数据，那么这就是中间件系统派上用场的地方。|1802808|希望所提供的信息能有所帮助。|1802809|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|M|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|N|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|O|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|P|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|K|$]]

It is just a piece of software or a tool on which your application executes and rapplication capabilities with respect to high availability,scalability,integrating with other softwares or systems without you bothering about your application level code changes .

For example : The operating system on which your application runs requires an I.P change , you do not have to worry about it in your code , it is the middleware stack on which you can simple update the configuration.

Example 2 : You experience problems with your runtime memory allocation and feel that the your application usage has increased , you do not have to much about it unless you have a bug or bottleneck in your code , it is easily achievable by tuning middleware software configuration on which your application runs. 

Example 3 : You have multiple disparate software and you need them to talk to each other or send data in a common format which is understandable by all the systems then this is where middleware systems comes handy.

Hope the information provided helps.

blocks|key|2016486|text|Middleware位于web应用程序和web服务之间，这些web应用程序和web服务本身无法通信，并且通常是用不同的语言/框架编写的。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2016487|一个这样的例子是OWIN+middleware+for+.NET环境，在owin人被迫在名为IIS的微软托管软件中托管web应用程序之前。在开发owin之后，它增加了在IIS中的主机和自身主机的能力，在IIS中只是增加了对作为接口的Owin的支持。也可以使用host+.NET+web+apps+on+Linux+via+Mono，这再次增加了对Owin的支持。|2016488|它还增加了创建Single+Page+Applications的能力，在处理Http请求/响应上下文时，因此在Owin之上，您可以通过OAuth2添加authentication/authorization逻辑。例如，您可以配置中间件来注册包含用户身份验证逻辑的类(例如。OAuth2实现)或包含如何管理http请求/响应消息逻辑的类，这样您可以使一个应用程序通过不同的数据格式与其他应用程序/服务通信(如json，xml，如果您的目标是web的话)。|2016489|entityMap^0|0|A|0|8|O|1A|3|3L|10|0|7|O|12|4|23|S|0^^$0|@$1|2|3|4|5|6|7|L|8|@$9|M|A|N|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|O|8|@$9|P|A|Q|B|C]|$9|R|A|S|B|C]|$9|T|A|U|B|C]]|D|@]|E|$]]|$1|H|3|I|5|6|7|V|8|@$9|W|A|X|B|C]|$9|Y|A|Z|B|C]|$9|10|A|11|B|C]]|D|@]|E|$]]|$1|J|3|-4|5|6|7|12|8|@]|D|@]|E|$]]]|K|$]]

<code>Middleware</code> stands between web applications and web services that natively can't communicate and often are written in different languages/frameworks.

One such example is <code>OWIN middleware for .NET</code> environment, before owin people were forced to host web apps in a microsoft hosting software called <code>IIS</code>. After owin was developed, it has added capacity to host both in IIS and self host, in IIS was just added support for Owin which acted as an interface. Also it become possible to <code>host .NET web apps on Linux via Mono</code>, which again added support for Owin.

It also added capacity to create <code>Single Page Applications</code>, Owin handling <code>Http</code> request/response context, so on top of owin you can add <code>authentication/authorization</code> logic via OAuth2 for example, you can configure middleware to register a class which contains logic of user authentification (for ex. OAuth2 implementation) or class which contains logic of how to manage http request/response messages, that way you can make one application communicate with other applications/services via different data format (like json, xml, etc if you are targeting web).

blocks|key|2016541|text|它是网络中分布式计算系统两端的操作系统和应用程序之间的软件层。事实上，它连接不同的网络和软件系统。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2016542|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|$]]

it is a software layer between the operating system 
and applications on each side of a distributed computing system in a network. In fact it connects heterogeneous network and software systems.

I have heard a lot of people talking recently about middleware, but what is the exact definition of middleware? When I look into middleware, I find a lot of information and some definitions, but while reading these information and definitions, it seems that mostly all 'wares' are in the middle of something. So, are all things middleware?

Or do you have an example of a ware that isn't middleware?

What is middleware exactly?

分布式计算

身份验证

中间件

数据库

服务器

Linux

我最近听到很多人谈论中间件，但是中间件的确切定义是什么呢？当我研究中间件时，我发现了很多信息和一些定义，但当我阅读这些信息和定义时，似乎所有的“软件”都在中间。那么，所有的东西都是中间件吗？或者你有没有一个不是中间件的例子？

问什么是中间件？
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