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Performance profilers are software development tools designed to help you analyze the performance of your applications and improve poorly performing sections of code. They provide measurements of how long a routine takes to execute, how often it is called, where it is called from, and how much of total time at some spot is spent executing that routine. If you've used a profiler in the past, you'll certainly agree that it is a wonderful asset during the development and QA process. Did you ever wonder, though, if the results and timings produced by a java or C# performance profiler are actually correct?


Why is API monitoring critical?

You need to think of a continuous cycle of development, testing, deployment and monitoring. As engineering organizations embrace Agile practices (read more here) and other modern techniques for software development, testing and deployment, it is critical that monitoring becomes a required extension of that continuous integration cycle and we update our monitoring scripts with the correct and latest versions of the functional tests to ensure uninterrupted availability for the consumers of the services.
When APIs fail, your applications fail: if you are using APIs to provide services for the functioning of your app and they are either not available, functioning improperly or not being responsive, it impacts the performance of  your app and the end user experience.
Once again, it is critical that you not only monitor the APIs you provide but also the ones you consume from 3rd parties.
API monitoring lifecycle

How do I monitor an API/Web service with Ready! API?

The latest version of Ready! API already has the AlertSite Connector plugin for Ready! API pre-installed and ready for use. This allows you to re-use your existing test cases and create monitors out of them that can be run from AlertSite’s global network of nodes or from inside your firewall.
You can monitor your APIs in 3 easy steps as shown in the graphic below:

API monitoring - 3 steps

To get started, click the Monitor APIs icon on the SoapUI toolbar to start the AlertSite Connector.
Monitor APIs icon on the toolbar

Step 1: Connect to AlertSite with a new or existing account.

To do this, click on Getting Started in the upper right corner.
Getting Started button
A.     Connect to AlertSite using a new account that is Free. To do so, enter your email address, a password that is at least 8 chars long and confirm the password.  Click on the Create Account button to connect to AlertSite.
Connect to AlertSite using a new account that is Free

B.     Connect to AlertSite using an existing AlertSite account. To do so, first click on the ‘I already have an account’ link.  Then enter your AlertSite email address and password and click on Connect.
Connect to AlertSite using an existing AlertSite account
C.     If you have forgotten your password, click on the forgot password link to help reset your password.

D.    You can check the ‘Reconnect when Ready! API starts’ to automatically connect with AlertSite and update the status of your running monitors.

Step 2. Add your existing API test cases to create monitors

All your test cases are available to you when you click add monitors.  Select your project, test suite and test case and give it a monitor name (this is what monitoring tests are called in AlertSite). You may choose to create a new one or drop the list down and overwrite an existing monitor.
Name your API monitor and select the frequency you want to monitor from 1-120 minutes. Once this is done, Click on the Add button.
If you wish to create more than 1, you can check the Add another check box.
Once you are done adding monitors,  you can click on the Done button to close the Add Dialog box.
API monitor properties

Step 3. Monitor your API’s for availability, correctness and performance

How do I install a newer version of the plugin?

To install a newer version of the plugin:
1.     Follow the instructions above to uninstall the older version of the plugin if an older version exists.
2.     Click on the Plugin Manager icon on the toolbar.
3.     Browse to the location on disk where the plugin (.jar) file is located. You will see the AlertSite Connector plugin listed in the list box.
4.     Close the plugin manager.
5.     Restart Ready! API if needed.
6.     At this point you will see the Monitor APIs icon on the toolbar to the right of the “New LoadTest” toolbar button.

Additional API Monitoring Resources