How multiple Users can hit multiple APIs through JMeter

The Simple Test plan of JMeter is that one user is hitting only one API/request. But in the real scenario, multiple users will always be there who will hit either single api or multiple apis. This can be understood by a simple example that a live application will be used by many users simultaneously and also multiple requests can be send by the same user on that application. Thus checking the application with this test scenario is very important. In JMeter we can create multiple users and multiple requests and also the combination of both of them.

Let's understand this with examples:

Test Scenario 1: Single User hitting multiple (3) http apis.

Step 1: Create a simple Test Plan with 1 Thread group and add three simple controllers under it i.e With text template, With html template and Without template. Right click Thread Group > Add > Logic Controller > Simple Controller

Step 2: Add http request sampler under each controller and fill the required fields. Right click controller > Add > Sampler > HTTP Request

Step 3: To view the results add a Listener 'View Results in Table' and check the result. Right click Thread Group > Add > Listener > View Results in Table

Now check the result. It shows a single user hits 3 different http apis successfully.

Test Scenario 2: Multiple users (5) hitting multiple (5) http apis.

Step 1: Create a Test Plan with 5 Thread groups. In each of the Thread groups keep the same configuration as Number of Threads -1 ; Ramp Up period - 1 and Loop Count - 1

Step 2 : Now under each thread group add http request sampler and fill the fields. Right click Thread Group > Add > Sampler > HTTP Request

Step 3 : To view the results add a Listener 'View Results in Table' and check the result. Right click Test Plan > Add > Listener > View Results in Table

Now check the result. It shows 5 users hits 5 different http apis successfully.

Thanks!!