Introduction to Gatling Load Testing
The open-source framework to perform performance testing in applications is Gatling load testing that is based on Scala, Netty, and Akka. It is first implemented in January 2012. It is updated every year and now it reached extensive popularity in the engineering committees. Gatling is mainly developed to script test codes in Scala programming which is a powerful framework but unfortunately possesses a minimum audience. The working, applications, importance and advantages of Gatling load testing tool is briefly explained in this article. The popularity of the Grating tool is not faded even for the years and stays strong among its connected audience.
Explain the Gatling Load Testing
It is reliable to use the tool which allows the user to run on HTTP servers and works in an asynchronous method. It insists that messages of the virtual users make them simple on resources that allow thousands of virtual servers to execute simultaneously without any impacts. The features of Gatling are scenarios, record, edit and analyze. The scenario is a piece of script that is executed at test loading and it utilizes a built-in recorder to develop many scenarios. The record uses the browser to capture the scenario at testing that makes reliable load testing.
For instance, the user can capture and record the working of the user who browses web pages that includes thinking time in between clicks. The edit option is used to manage the scenario which should be used at the time of test loading. At the time of analysis, it used to generate many meaningful reports with a colorful graphical representation of results at the end of the testing process which is more helpful in the analytic process. some tools are used for load testing which efficiently works on URL bashing but doesn’t manage logic in between multiple requests.
The Gatling is an advanced testing tool that manages virtual users that possess its data and follows the unique browsing path. The testing tool assumes every virtual user as a thread. Then it communicates the user via messages that assemble in a suitable way which is used to manage thousands of users concurrently.
How does Gatling Load Testing work?
The working of Gatling load testing involves the following concepts which are explained briefly.
Scenario – It is used to represent the behavior of the testers which describes the scenario that is scripted and fed to Gatling. The scenario is obtained as the output of measurement on the executed applications derived from the analytic tools. The development of the scenarios is the significant element that is meaningful output obtained from the load test. The scenario is created to represent any behavior of the virtual user and it maintains all the necessary options needed for the user to access his web page or applications.
As an example, the scenario created for standard e-commerce applications should be.
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- To access the home page
- To choose the browser categories
- To make any particular search in the category
- To find and open any product description
- To buy the selected product
- To log in and logout to the user account
- To do payment and checkout the applications
Simulation – It is a brief definition of the load test. It explains the possibility of the execution of several users on the application. It also shows a particular part of the scenario that executed on new injected virtual users.
Session – Every virtual user is backed up by a session. These sessions are the real message that operates on the workflow. It is a static placeholder where the test engineers can capture, feed and save the data.
Feeders – When the application finishes its testing, it allows the authentication to testers and checks the basic activities of the application or web browser such as login, logout, actions according to the permission of the user. So the feeders are comfortable executing API for test engineers to feed the data from an external resource only for the concerned virtual users.
Checks can analyze the response which is generated by Gatling. So when every time if the user sends any request to the server it replies with a response that is produced from the server and then Gatling. The check is also used to store the data and reuse it later.
The assertion is used to describe the acceptance strategy on Gatling statistic which makes the Gatling fail with error code for the entire test performed.
Reports are generated automatically at the end of the testing process in HTML format. These reports are portable and can be seen in the web browser.
Importance of Gatling load testing
The Gatling is scripted in Scala which enables the user to execute it on any operating system. It is not prone to any hit or troubles that use different cloud servers and local machines which are used to create and execute the user’s test and hence it operates everywhere. The performance test of Gatling is available as code which is a huge benefit for many developers. It contains repositories of historical data that can be edited and reused.
Gatling extracts the detailed reports once the testing is completed which is helpful at decision making. The report is interactive which holds the future glimpses of modification. The powerful performance testing tool is Gatling which has the best architecture of Akka toolkit which provides a concurrent computation on the actor model. It has a better capable and functional assertion when compared to Jmeter.
Advantages
It manages the optimal connections and very useful and helpful for the developers to make their testing process easier. Continuous integration and continuous deployment are offered by Gatling load testing instantly. It enables live monitoring and attracts the analyst with its automatic generated reports. It can be integrated with Taurus and also suitable for all the operating systems.
Gatling Load Testing is popular because of its human-readable text format. It offers easy integration process by using its real-time monitoring tools. The architecture of Gatling is built with continuously integrated pipelines.
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