APIs For Dummies®, IBM Limited Edition. Published by. John Wiley For information about licensing the For Dummies brand for products or services, contact. Trademarks: Wiley, For Dummies, the Dummies Man logo, The Dummies Way, tailamephyli.tk, Making. Everything Easier, and related trade dress are. For information about licensing the For Dummies brand for products or services, contact .. APIs For Dummies, Apigee Special Edition, gives you a crash.

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APIs for tailamephyli.tk - Download as PDF File .pdf), Text File .txt) or read online. APIs (application programming interfaces) are a big part of the web. In Documentation: Webpages, PDF's, etc. that explain the rules of an. An application programming interface (API) is a specification intended to be used as an .. How to Write an API (tailamephyli.tk).

Show More. No Downloads. Views Total views. Actions Shares. Embeds 0 No embeds. No notes for slide. But what actually is an API?

They are used to integrate websites and systems with other websites such as… They are used to integrate websites and systems with other websites such as… site They are used to integrate websites and systems with other websites such as… site site They are used to integrate websites and systems with other websites such as… site siteTwitter They are used to integrate websites and systems with other websites such as… site siteTwitter and Salesforce.

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How APIs Work for Beginners – The technical details

In this chapter. Different groups have specific parts to play in API management. A managed API not only has a well-defined interface and a defined target audience but also is under appropriately enforced business and IT controls.

IT operations. For maximum effectiveness. She needs to do the following: To prevent prohibitive runtime costs. These characteristics are as follows: These capabilities should be available in your selected API runtime. As soon as creating an API becomes code-intensive rather than a matter of dynamic configuration. Having spare capacity to support the full potential of traffic corresponding to API plans sold can be very costly.

The governance regime needs to be very lightweight. This business operational decision applies to all APIs. IBM Limited Edition development teams. So if an API is important to your organization. Not so fast.

What is REST

Not all APIs are necessarily managed. When the APIs being consumed are your own. Here are the key differences between managed and unmanaged APIs: For more about API middleware. Any historical records about how the API has behaved over time may add to consumer confidence in using it. In particular.

Throughout this chapter. In other words. Turning everything into an API. Having said that. Any control is provided via logic in the API implementation. I give you a few examples of situations in which having unmanaged APIs is appropriate or even unavoidable: If a user has network access to the API. So why would you want any API to be unmanaged?

If an API is a direct part of your business model. Thinking APIs should be part of a bigger integration strategy for turning your enterprise into an innovation engine.

Unmanaged APIs can be important resources in many ecosystems. The uniform consumption model is the reason why you still want to think of these interfaces as APIs. But what if you are trying to do that. In Formula 1 racing.

A race car is built from rapidly replaceable components with well-defined interfaces. There are many different kinds of APIs and uses for them. If all you are trying to do is provide a handful of stable public APIs. No team takes the same car to two consecutive races. Although parts of the car may remain stable throughout the season.

More important. APIs are one way in which experimentation can be harnessed for enterprise advantage. Modern enterprises are in many ways like Formula 1 teams. If the needs of a mobile developer change rapidly.

An API needs to be attractive to use. Reusability implies stability over a relatively long period. But if the API is created simply to improve collaboration between. Managing opportunistic APIs provides the following benefits: Both approaches to integration have their proponents and address business and IT concerns alike.

The nature of an easily managed API is simply that it is both defined and controlled by configuration. Otherwise the cost of opportunistic change becomes impractically high. Regardless of the cost of creation and maintenance.

The importance of reusability and stability depends solely on your business purpose for having the API. If that business purpose involves rapid change. Nothing in the concept of an API requires it to necessarily be reusable or stable over time. For more information about the developer point of view. So API management software focuses on this challenge. The Open Group. In the car analogy. In that case. From a technical perspective.

APIs are always designed to be attractive to the intended consumer.

To a consumer. To an API consumer. The first generations of databases were focused exclusively on the internals. To API consumers. APIs are controlled proxy views of the data and capabilities of a domain. On the other side. How often have you not seen an SOA initiative slowed down by conflicts between service providers and service consumers on what constitutes a good service interface? On the one side. Instead of forcing a resolution of this conflict. Quickly though.

A historical analogy exists in the evolution of databases. The most important aspects of the interface design are the set of events emitted or received and the associated event messages. APIs and services are complementary rather than contradictory. But who protects the service providers from the churn of changing needs in omnichannel front-end solutions?

Applying APIs and services together lets you create an eye of calm in a hurricane of change.

An Introduction to APIs

Suffice it to say that interface design of APIs is generally well understood. But REST interfaces tend to be chatty. The most important aspects of the interface design are the set of supported methods and the data structures of each method. APIs are the way in which those capabilities services are repackaged. REST interfaces are excellent for human consumption.

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For instance. The most important aspect of the interface design is the URI structure that allows a consumer to navigate the object graph embodied by the API. Entire books have been written about interface design. Services are the means by which providers codify the base capabilities of their domains. Unfortunately most of the examples discussed in the industry at large are exclusively around public APIs.

SOAP interfaces are great for system-to-system integration. Even more unfortunately. The reason being that it says nothing about the different types of business objectives that may have led you to consider APIs in the first place.

All of these decisions and more depend on the desired business outcome. Is that what the excitement is all about? I believe that there is more to understanding APIs. These concerns are the core elements of an effective API strategy. There are decisions around the terms and conditions under which APIs can be shared. In the process. Success with this entry point likely requires careful planning. Monetize Your Data Monetizing your data is based on externalizing insights or functions in a form that entices third parties to use those insights or functions.

The key business objectives for monetization are pivoting your business. The most obvious example is when the third party is paying to use your API. Although you can and should do some experimentation. Or you may be onboarding partners via APIs without any direct payment involved at all. Monetization can come in many forms.

The desired outcome is monetary or based on a nonmonetary value such as increasing your influence. Thinking about APIs in the context of monetizing your data. The audience is inevitably a third party. You can read the chapter from beginning to end or you can jump to the entry point that best matches your business needs.

In other cases. The APIs required to engage the audience must provide the value you want to sell. Typical cases are partners and external developers not developers in your own organization or developers hired by your own organization. An enterprise may have multiple agendas at the same time. Try early. Some people say that cost of implementation is the most important factor. Although you generate value primarily by providing APIs for others to consume. What decides long-term viability is whether the intended API consumers experience both value and trustworthiness.

The way you curate the data and function to implement the APIs comes down to quality and reliability. The focus of this API entry point is to chase business opportunities aggressively and to make innovation a learning process through the following model: Mixing in some enterprise APIs to expose core data in an easily accessible fashion can kick-start not only development.

Contract negotiations are anathema to fast innovation.

The ability to compose new innovative capabilities. This role has two aspects: In these cases. Thinking about APIs in the context of freedom to innovate. To accelerate innovation. The desired outcome is to quickly discover what works and what differentiates in the market and then to scale successes. The audience is primarily internal developers. Even when you believe that you know what the market needs. If it turns out that you need something different.

The terms and conditions under which API consumption happen remain important — not in terms of payment. Considering which third-party APIs to consume is important for this entry point. The way you curate the data and functions required to implement the APIs is different for preplanned enterprise APIs and opportunistic. As a simple example.

Every addressable unit of information carries an address, either explicitly e. According to Roy Fielding: Hypertext or hypermedia mean the simultaneous presentation of information and controls such that the information becomes the affordance through which the user or automaton obtains choices and selects actions. Machines can follow links when they understand the data format and relationship types.

Further, resource representations shall be self-descriptive: the client does not need to know if a resource is employee or device. It should act on basis of media-type associated with resource. So in practice, you will end up creating lots of custom media-types — normally one media-type associated with one resource. Every media type defines a default processing model. For example, HTML defines a rendering process for hypertext and the browser behavior around each element. Roy Fielding has never mentioned any recommendation around which method to be used in which condition.

All he emphasizes is that it should be uniform interface. Ideally, everything that is needed to change the resource state shall be part of API response for that resource — including methods and in what state they will leave the representation.The exception are sites built on open source code, which is sort of like a worldwide hippy commune of developers who share their notes.

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