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How to create load tests for APIs using jmeter

What are stress tests?

Stress tests are performance tests that you can execute on your API. It’s important to understand that APIs are stateless, so you can consider ‘users’ differently from normal stress tests that involve application sessions.

In REST APIs, there are theoretically infinite users, because the capacity depends on the number of requests, not on a fixed number of users. Therefore, the most important thing is to simulate the requests that users execute within the applications. If this is not possible, you can estimate the percentage of requests or, if you cannot do that, you can assume that all requests are equally weighted

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Generating JMeter tests from OpenAPI

You can generate JMeter tests directly using OpenAPI Generator. APIQuality allows you to generate the export files for use with the JMeter application. You only have to execute the stage and obtain the files to import into the JMeter application.

jmeter files

Do you create and execute stress tests easily for your APIs?

Configure your tests in JMeter and upload in APIQuality

When you configure your tests in JMeter, you  have to define:

  • Host
  • Port
  • Path
  • csv with response values

You can execute stress tests for the api. If the stress tests are ok you can upload in api first cycle.

jmeter configuration

Executing JMeter tests in API First cycle

You can upload the jms and csv files and put the file in stage jmeter to execute them. All results are saved in the repository and you can view the historical executions and view the jmeter report.