Friday, October 23, 2015

Lesson 2 - Apache JMeter Introduction

Introduction

In this article, we will see how can we implement and configure the Apache JMeter that allowing us to perform different types of performance tests such as Load/Stress on a Web Application.

Prior to the implementation step, we first need to answer the question “What is Apache JMeter..?” , JMeter is an open source Java application that is built to allow the person which use it to perform both basic and advanced performance tests.

JMeter provides a well-structured Graphical interface that supports almost any Operating system (Windows/Unix) that can run java virtual machine (VM).

In addition, if you’re new in the performance testing world, you need to know that performance test activities (Stress, load, pike, endurance testing...) are running (In most cases) for a long period of time, therefore apache JMeter is designed to measure the designed tests on a long execution time, flexibility in the supported scenarios and a great reporting mechanism that allow the user to receive a great structured input about the test results

JMeter Main Features

The main features of JMeter:
  • JMeter provides the ability to reduce the regression testing cycles with automated test execution.
  • JMeter provide a great and intuitive graphical interface that simplifies the user tasks
  • JMeter provides a more reliable test results compared to other open source tools.
  • JMeter is an open source software, everyone can download and use it for free!
  • JMeter can be used to monitor your servers (Database, Web, Ftp…)
  • JMeter provide a Great statistic during and after the test execution.
  • JMeter support multiple protocols (Web, FTP, LDAP, Imap…).
  • JMeter support multiple platforms and architectures.
  • JMeter support multi-threading execution, therefore we can execute multiple tests simultaneously, save time and increase our testing coverage.
  • JMeter support XML files, which allow us to export our tests, edit them in any text editor application and generate new test cases.

How JMeter work

  1. The User configures a new test case and start the test.
  2. JMeter starts to simulate a multiple request to the target server that simulate a "Real" scenario of multiple clients that connecting to the server.
  3. The server receives the virtual requests and respond.
  4. JMeter responds to the server answer.
  5. JMeter allocates statistics, analyze the data and gather the relevant information.
  6. JMeter Finish the test.
  7. The User can extract a detail report.

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