This pattern language consisting of 65 integration patterns helps developers design and build distributed applications or integrate existing ones. The patterns provide a technology-independent vocabulary and visual notation harvested from proven solutions to recurring problems. They also share common \"gotchas\" and design considerations. Besides receiving numerous accolades, the patterns spurred the development of a whole generation of open source Enterprise Service Bus (ESB) implementations, such as Apache Camel, Mule, WSO2, Oracle Service Bus, Open ESB, SonicESB, or Fuse ServiceMix.
When Bobby Woolf and I started to document the patterns 20 years ago, the key technologies for distributed applications were JMS, SOAP, MSMQ, and .NET WCF. Large-scale application integration was done with integration tools and platforms, such as IBM WebSphere MQ, TIBCO, WebMethods (now Software AG), or Microsoft BizTalk. Although technology has evolved, many of these products still form the backbone of modern enterprises.
Cloud platforms and deployment automation have laid the foundation for a new generation of distributed systems: microservices and serverless architectures. Those applications rely on a smooth interconnect between components, giving rise to Service Meshes, Serverless Orchestrators, and Event Buses. Amazingly, we find the same integration patterns in those systems! That's why this site contains many modern examples for integration patterns:
Asynchronous messaging is the foundation for most integration solution because its architectural style acknowledges the challenges of distributed communication, such as latency or partial failure. However, many interactions between systems extend beyond sending a single, stateless message: a request may expect a response; a handshake or authentication are needed first; a reservation is confirmed or expires. Such conversations, stateful exchanges between participants, present new design challenges and patterns. I therefore started documenting Conversation Patterns, which are the starting point for Enterprise Integration Patterns 2.
Architecting integration solutions is a complex task. There are many conflicting drivers and even more possible 'right' solutions. Whether the architecture was in fact a good choice usually is not known until many months or even years later, when inevitable changes and additions put the original architecture to test. Unfortunately, there is no \"cookbook\" for enterprise integration solutions. Most integration vendors provide methodologies and best practices, but these instructions tend to be very much geared towards the vendor-provided tool set and often lack treatment of the bigger picture, including underlying guidelines, principles and best practices.
Asynchronous messaging architectures have proven to be the best strategy for enterprise integration because they allow for a loosely coupled solution that overcomes the limitations of remote communication, such as latency and unreliability. That's why most EAI suites and ESB's are based on asynchronous messaging. Unfortunately, asynchronous messaging is not without pitfalls. Many of the assumptions that hold true when developing single, synchronous applications are no longer valid. Vendor-independent design guidance helps developers avoid these pitfalls so they can build robust integration architectures based on asynchronous messaging.
Enterprise Integration Patterns is a book by Gregor Hohpe and Bobby Woolf and describes 65 patterns for the use of enterprise application integration and message-oriented middleware in the form of a pattern language.
Camel supports most of the Enterprise Integration Patterns from the excellent book by Gregor Hohpe and Bobby Woolf, and newer integration patterns from microservice architectures to help you solve your integration problem by applying best practices out of the box.
Utilizing years of practical experience, seasoned experts Gregor Hohpe and Bobby Woolf show how asynchronous messaging has proven to be the best strategy for enterprise integration success. However, building and deploying messaging solutions presents a number of problems for developers. Enterprise Integration Patterns provides an invaluable catalog of sixty-five patterns, with real-world solutions that demonstrate the formidable of messaging and help you to design effective messaging solutions for your enterprise.
The authors also include examples covering a variety of different integration technologies, such as JMS, MSMQ, TIBCO ActiveEnterprise, Microsoft BizTalk, SOAP, and XSL. A case study describing a bond trading system illustrates the patterns in practice, and the book offers a look at emerging standards, as well as insights into what the future of enterprise integration might hold.
Gregor Hohpe leads the enterprise integration practice at ThoughtWorks, Inc., a specialized provider of application development and integration services. Drawing from his extensive experience designing and implementing integration solutions for enterprise clients, Gregor has published a number of papers and articles presenting a no-hype view on enterprise integration, Web services, and Service-Oriented Architectures. He is a frequent speaker at technical conferences around the world.
Enterprise Integration Patterns are accepted solutions to recurring problems within a given context. The patterns provide a framework for designing, building messaging and integration systems, as well as a common language for teams to use when architecting solutions.
Here we will explore why enterprise integration patterns are necessary to your organization, demonstrate some common use cases, and briefly touch on how you can begin applying these patterns to your business processes.
The use cases I comment on below are all solved using EIPs originally defined by Hohpe and Woolf. Depending on the integration challenge, different pattern logic is applicable. All patterns published in their book are described in detail on their website.
The example use cases listed below are all processes or challenges that can be solved using EIPs in FME. After building workflows in FME Desktop, you can use Automations in FME Server to effectively build your own enterprise integration patterns.
If you are performing data migration tasks for enterprise integration, there are a variety of patterns and combinations of patterns you can use. The way you choose to migrate data with EIPs is dependent on the data transformations required.
Enterprise Integration Patterns provides an invaluable catalog of sixty-five patterns, with real-world solutions that demonstrate the formidable of messaging and help you to design effective messaging solutions for your enterprise.
Apache Camel is a Java framework that lets you implement the standard enterprise integration patterns in a few lines of code. With a concise but sophisticated DSL you snap integration logic into your app, Lego-style, using Java, XML, or Scala. Camel supports over 80 common transports such as HTTP, REST, JMS, and Web Services.
Claus Ibsen is a principal engineer working for FuseSource specializing in the enterprise integration space. He has worked on Apache Camel for the last three years where he is a a PMC member, a key contributor, and heads the development and roadmap. Claus lives in Sweden near Malmo with his wife and dog.
Jonathan Anstey is a software engineer with varied experience in manufacturing control systems, build infrastructure, and enterprise integration. Lately, Jon has been working on Apache Camel as a PMC member and an active committer while at FuseSource. When he is not hacking on Camel he likes to spend time with his wife and daughter in St. John's, Newfoundland.
Put simply, NiFi was built to automate the flow of data between systems. Whilethe term 'dataflow' is used in a variety of contexts, we use it hereto mean the automated and managed flow of information between systems. Thisproblem space has been around ever since enterprises had more than one system,where some of the systems created data and some of the systems consumed data.The problems and solution patterns that emerged have been discussed andarticulated extensively. A comprehensive and readily consumed form is found inthe Enterprise Integration Patterns [eip].
Over the years dataflow has been one of those necessary evils in anarchitecture. Now though there are a number of active and rapidly evolvingmovements making dataflow a lot more interesting and a lot more vital to thesuccess of a given enterprise. These include things like; Service OrientedArchitecture [soa], the rise of the API [api][api2], Internet of Things [iot],and Big Data [bigdata]. In addition, the level of rigor necessary forcompliance, privacy, and security is constantly on the rise. Even still withall of these new concepts coming about, the patterns and needs of dataflow arestill largely the same. The primary differences then are the scope ofcomplexity, the rate of change necessary to adapt, and that at scalethe edge case becomes common occurrence. NiFi is built to help tackle thesemodern dataflow challenges.
This article shows you how to use Service Broker to implement some common software patterns from the book Enterprise Integration Patterns. Because a complete introduction to enterprise integration patterns and asynchronous messaging is beyond the scope of this article, it focuses on ideas that are specific to the Publish-Subscribe (PubSub) asynchronous messaging pattern.
Gregor Hohpe and Bobby Woolf, authors of the book Enterprise Integration Patterns created a catalog of 65 design patterns specifically for component integration via messages. Hohpe and Woolf divided these messaging patterns into several categories, but two -- channel patterns and message construction patterns -- are particularly important to understand for enterprise architects managing large-scale systems. 153554b96e