Essential API Performance and Load Testing

If you have an API, you should be load testing it. You should test it frequently and consistently.

With that out of the way, here’s why: API consumers are like your end users of a website or app. Yet unlike sites or apps, APIs don’t have front ends or usage paths to follow. Instead, assuming you’ve built the right capabilities into your API, everything comes down to performance.

So basic testing of your API is fine when you want to achieve “works on my machine”-level performance. But that isn’t enough for professional use.

Instead, you should be testing your API’s performance under load - seeing how it will perform under the stress of multiple consumers. In other words, your REST API shouldn’t spend any time resting at all.

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API Performance Testing: Getting Started

API load testing doesn’t have to be confusing and complex. As with so many things, a major part of what you need to do is not that complex. You can cover the majority of what you need to test with your API with a simple, straightforward plan and setup. Once you’ve done that, feel free to make it more difficult and complex. Until then, here’s how to load test your API the easy way.

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Blueprint for API Performance Testing: Plan, Configure, and Execute

APIs are everywhere. As I write this post, I know that the underlying technology enabling me to produce this text is wired together and magically works through the integration of a significant number of loosely and tightly coupled API interactions. As I use the Fitbit ecosystem to monitor my health and fitness, I know there are numerous APIs involved in delivering insights and information to me. As I file my business expenses via Expensify, I know the simple soup-to-nuts workflow from submission to payout would be impossible unless a number of different industry providers integrated seamlessly via APIs.

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Webinar: Load Impact and ThoughtWorks on API Performance Testing

ThoughtWorks is one of the largest and most successful software consultancies in the world. That’s why we’re really excited to co-host our next webinar with one of their talented QA Consultants.

Srinivas Murty of ThoughtWorks will be discussing the finer points of API performance testing at 1 p.m. ET September 13.

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Load Testing Your Postman Collections

Load Impact is proud to announce that you can now reuse Postman collections in our load testing platform.

In a recent round of community feedback, the ability to take Postman collections and use them in Load Impact was one of the most-requested features we heard, and here we are — delivering what our beloved users want (and need), once again.

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Load Testing a REST API on a Low-Power IoT Platform

Web-based APIs have exploded in use from banking, eCommerce, medical devices, entertainment and more. From Facebook to Amazon, APIs are being used basically everywhere on the web today.

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API Load Testing: Implications of an "API-First" Strategy

If your company has built a mobile app for public distribution, the odds are good that it's using an API developed by your team. APIs play a critical role in application development because they provide so much flexibility in targeting various platforms and devices; in fact, they can be considered the foundation of any good app or software.

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