An Introduction to Load Testing

Posted By : Monika Sharma | 01-Feb-2021

Load Testing is a type of Performance Testing that inspect the performance of the system under real-life conditions. In this, we check the behavior of the system in case of normal and high loads. For example, whether a system, piece of software, or computing device can handle high loads given a high demand of end-users. Load testing is the process of putting the load through ( WebSocket, HTTP, HTTPS, etc) calls on any software application to determine its behavior under high and normal load conditions. It helps to identify the maximum requests a software system can handle.


Load testing determines the point of a bottleneck due to which the system starts degrading performance. It is effective when we simulate real user scenarios. We need to know how our users behave on our system or application. It tries to simulate their behavior using various API and generate load through various requests at our application for a period of time to understand application behavior changes.


Also Read: Stress Testing Using Jmeter


Load Testing identifies the following :


  • Maximum operating capacity

  • It is used to identify whether the current infrastructure is sufficient to run the application

  • It determines the sustainability of application with respect to peak user load

  • It examines scalability to allow more users to access it and the number of concurrent users that an application can support.


Tools used for Load Testing


Performance testing is significant in a real-time environment, particularly from customer satisfaction. There are different performance testing tools available such as:


  • Apache JMeter

  • LoadRunner

  • LoadView

  • NeoLoad

  • LoadUI

  • WebLOAD


Apache JMeter is one of the most preferred tools for performing testing of various software services


Also Read: An Overview of Test Design Techniques


Apache JMeter


It is a software testing tool used for analyzing and measuring the performance of different products and software services. It is a Java open-source software used for testing FTP application or Web Applications. Jmeter is designed to examine and measure the load and performance behavior of web application services. It is not a browser and it doesn't deliver HTML pages as any browser does, rather it works on protocol level.


A list of protocols supported by Jmeter is given below:


  • Web - HTTP, HTTPS sites that is 'web 1.0' web 2.0

  • Database via JDBC drivers

  • Directory - LDAP

  • Messaging oriented service via JMS

  • Service - IMAP, SMTP, POP3

  • Web Services - SOAP / XML-RPC


Also Read: Using Jmeter for Performance Testing


Advantages of Jmeter


1. Open-source Software

2. User-friendly

3. It supports non-functional tests such as Stress Testing, Distributed Testing, Web service testing


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About Author

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Monika Sharma

Monika is a certified software tester having skills in manual and automation testing. She is hardworking and believes in learning new things everyday for good career growth.

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