Question

我很晚才读过许多关于SOA的内容,但大部分内容与SOAP有关,并且有许多属于C#/Java系统的“官僚”障碍。令人高兴的是,我认为这种官僚机构,特别是SOAP,是痛苦的。因此,如果是荒谬的,能否与教育、科学和技术部共同设计一个社会行动?

Right now in by Ruby applications i make all my controllers RESTful. My web interface (forms, etc) make GET/POST/PUT/DELETE requests to the core, which is a REST webservice. All other systems that use the core make RESTful requests to it. Is this a SOA?

Answer 1

At a high Level the answer is Yes, however not completely.

SOA requires thinking about the system in terms of

Services (well-defined business functionality)
Components (discrete pieces of code and/or data structures)
Processes (Service orchestrations. Generally using BPEL)

Being able to compose new higher level services or business processes is a basic feature of a good SOA. XML, SOAP based Web Services and related standards are good fit for realizing SOA.

另外,社会行动组织也接受了几项原则——。

Standardized service contract – Services adhere to a communications agreement, as defined collectively by one or more service-description documents.
Service Loose Coupling – Services maintain a relationship that minimizes dependencies and only requires that they maintain an awareness of each other.
Service Abstraction – Beyond descriptions in the service contract, services hide logic from the outside world.
Service reusability – Logic is divided into services with the intention of promoting reuse.
Service autonomy – Services have control over the logic they encapsulate.
Service granularity – A design consideration to provide optimal scope and right granular level of the business functionality in a service operation.
Service statelessness - Services minimize resource consumption by deferring the management of state information when necessary
Service discoverability – Services are supplemented with communicative meta data by which they can be effectively discovered and interpreted.
Service composability – Services are effective composition participants, regardless of the size and complexity of the composition.

一个基于SOA的结构预计将有服务定义。由于科技创新网络服务缺乏明确的服务定义(类似于施舍),因此很难建立基于教育、科学和技术的系统来达到上述多数原则。

为实现同一目标,你需要具备适当的网络服务+交响乐机(可以使用像MuleESB或Camel等一些轻重的ESB)。

还请参看这一资源:From SOA to REST。

在以下评论中添加这一部分内容:

需要进行交响乐,以堆肥工艺。这为社会行动提供了主要好处。

Say you have a order processing application with operations like -

addItem
addTax
calculateTotal
placeOrder

最初,你建立了一种程序(使用BPEL),按顺序使用这些行动。你们有客户利用这一竞争服务。几个月后,新的客户出现免税,而不用写新服务,你只能创造新的过程,绕过加泰克斯行动。因此,只有重新利用现有服务,你才能更快地实现业务功能。在实践中,这种服务是多余的。

因此,BPEL或类似(ESB或路由)技术对于SOA至关重要。如果没有商业利用,SOA实际上不是一个SOA。

贴在我的个人博客上——http://blog.padmarag.com

Also check this new resource I came across - REST based SOA

Answer 2

Service in SOA terms is a component which solves a certain business problem. SOAP/WCF are more related to the interface/delivery part of SOA. REST approach can be used as well. Service contract, policies, versioning and other standard SOA features can be also implemented with RESTful service.

主要的无害环境技术问题是,它有针对性地设计了CRUD,因此,这不是复杂逻辑执行的最佳选择。但是,如果你的商业逻辑是完全的CRUD(或对CRUD的趋同),那么它就应当完全正确。

Btw, looks like Microsoft added operations to WCF data services specially to emulate SOAP with REST.

Answer 3

国家安全局最重要的事情是一些软性因素,例如让其他人使用你的服务,而到此为止,签证也带有一种可轻易使用代理的轮.关系。服务需要堆肥,但你确实需要交响乐团、BPEL或一辆小客车,以便在你从SOA开始的时候这样做。 (事实上,你利用了这些想法,认为如果没有这些结果,你可以取得更好的结果,但你确实需要一些事件。)

Note products like WCF allow you to create a service which exposes a wsdl , but besides SOAP you can also use REST/Json or even better binary TCP end points .. This is ideal since you use SOAP for simplicity and switch to binary ( which blows REST out of the water) when you need to.

就SOAP在8年时间里与WCF公司建立高性能的SOA系统而言,它从未注意到过SOAP,也就是说,它主要在C#公司工作,而且我们有良好的SOAP,而大多数其他语言都没有。

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