By the end of this blog, I want to explore below three parts of API lifecycle.

  1. API Versioning: Ensuring Compatibility and Evolution
  2. API Deprecation: Sunsetting APIs Gracefully
  3. API Analytics: Insights for Optimization and Growth

Table of Contents

  1. Table of Contents
  2. API Versioning
  3. API Deprecation
  4. API Analytics
  5. What have we learnt so far?
  6. Conclusion
  7. Where to go from here?

API Versioning

API versioning is a critical aspect of API design and maintenance, ensuring that changes and updates can be made without disrupting existing clients. There are several approaches to API versioning, each with its pros and cons.

In SAP API Management, the simplest way to do it after you reach major milestone after multiple revisions, in your Configure window “Create New version” as shown below. You can start clean on next version, if you version it immediately before you are ready to wrap it in “Product” to publish on ABHE.

Give a version format of your choice, but follow same across all APIs as per your firm’s governance guidelines for naming.

Notice the basepath getting prefixed with version details. Make sure you version your proxies before you publish it through product.

Also note that this doesn’t stop your old proxy from working, it just provides a new version available for consumption.

API Deprecation

API deprecation is when the developers of an API (Application Programming Interface) signal that they intend to stop supporting a particular version or element of that API in the future.

There are generally below reason an API(s) can be planned for deprecation:

  1. Improved Versions - retiring old versions as new and improved versions are available.
  2. Security Enhancements - when new API versions can address security flaws from previous versions, it is ideal to retire previous versions.
  3. Simplification - Sometimes second attempt at solving a problem gets you better design and simplifies the design from previous attempt. New simplified version can then be rolled out and old version can be retired.

Steps involved in deprecation. These are not comprehensive, but approach should be refined on case to case basis.

  1. Versioning - So that both new and old versions are available simultaneously, allowing time to address any issues with new version without interrupting existing API consumers.
  2. Signalling and Communciation - Signalling at application level and communication at email or notifications level. Sending out announcements outlining the specifics, what is deprecating, when and what is next course of action to be taken by consumers.
  3. Error Handling - Apply error handling at the API signalling that API has been deprecated.
  4. Monitoring and Analytics - Monitor the API usage to make informed decison about correct time to sunset older version.
  5. Migration Guides and Tools: Provide comprehensive migration guides, documentation updates, and tools to assist users in migrating to the recommended alternative.
  6. Post-Deprecation Cleanup: After the deprecation, clean up any remaining resources associated with the deprecated endpoint or version.

There are multiple ways to signal deprecation the simplest way is to update Open API Specification in API designer, as shown below.

Note- that once the deprecation decision is final and its implemented, do version it correctly and mandatorily.

API Analytics

API analytics involves the collection, analysis, and interpretation of data generated by API usage. By tracking metrics such as API call volumes, response times, error rates, and usage patterns, organizations gain valuable insights into how their APIs are being utilized. These insights enable informed decision-making, optimization of API performance, identification of potential issues, and enhancement of the overall user experience.

API analytics empower organizations to measure the effectiveness of their APIs, monitor trends over time, and make data-driven adjustments to better meet the needs of developers and end-users.

In API Management in Monitor you can discover valuable information about APIs. Below are a few examples.

There are various metrices, pie charts, graphs you can analyze to derive more insights.

What have we learnt so far?

At this juncture, you should have fairly good understanding of complete API lifecycle. In this blog, we have gone over versioning of APIs, signalling deprecating the APIs and analytics to make more informed decisons. Each of these information is very much important and should be taken into account when you plan to roll out your APIs.

Conclusion

In this blog series, we’ve covered every API lifecycle phase, from planning to engagement and deprecation. Effective API management is vital for modern enterprises, serving as the backbone of seamless integration and data-driven decision-making.

Understanding API management is crucial for building resilient systems that leverage data effectively. By navigating the API lifecycle with precision, businesses can drive innovation, efficiency, and competitiveness in the digital landscape.

Where to go from here?

When I was writing this blog series, I discoverd so many new things myself, despite a little bit familiarity with the topic already. If you are a beginner, this series is just a start and you should have vast number of topics you should be going over after this series.

If I have to bullet point next topics you can go on to learn, it would be:

  1. Create Different Type of API providers
  2. Implementing other policies not covered in this blog series (there are many…)
  3. Multi-tenant set up i.e. how to transport APIs from one tenant to other.
  4. Usage of devOps in API lifecycle management.

There are many more such topics you can explore as you build your own understanding of API management topics.

It was an exhausting blog series to write and edit, yet very much insightful for myself as well. Hopefully, it will find its way in your bookmarks a beginner guide.

Do share you comments, feedbacks, corrections, insights. I will look forward to it.

Ciao, peace. I will see you in next blog series.