Learn how to easily use Selenium with JMeter's WebDriver Sampler. Simply install "Webdriver Set" plugins, then launch the WebDriver test in the cloud using BlazeMeter.

  The Representational State Transfer (REST) uses the HTTP request method, and the most popular  are GET, POST, PUT and DELETE. Responses to these requests return status codes indicatin

  How to Load Test Mobile Apps   Ready to start load testing your apps? BlazeMeter provides a series of handy options to simulate the work of users with various mobile devices.&nb

This article will describe the steps you need to take to easily run a load test with 50K concurrent users test (as well as bigger tests, up to 2 million users).   Quick Steps Overview  

Easily choose between open-source load testing tools according to your needs. Compare pros and cons of different performance testing solutions.

6 top tips for ensuring your website or app don't crash during Black Friday. Read and get performance testing tips that are easy to implement.

Master using JMeter timers in your load testing for pausing. Add the Constant Timer, the Uniform Random Timer and more to optimize your performance scripts.

The ultimate guide for load testing HLS protocol with JMeter. Write the best performance scripts before sports events, music concerts and more and get ready.

Use JMeter to performance test AJAX-enabled web sites. This guide will teach you to build load testing scripts in JMeter for Ajax. Read and become a testing pro.

A guide to JMeter Counter elements. Learn to use Counters and the Loop Controller in your load test to manage the pace of your performance script execution.

Learn to use the JMeter HTTP Cookie Manager element. Handle browser cookies in your load test by adding the HTTP Cookie Manager to your performance script.

JMeter is an awesome tool that provides excellent scripting capabilities. You can simulate almost anything using JMeter scripting; log in, posting of forms, various browsers and so on, BUT, executing

   It’s not easy today to find a single node system as both failover and resilience are key points of modern applications. So if you need to load test a system, it will likely be

Easily learn to use the HTTP Basic Authentication in JMeter. Run your load tests for restricted URLs in no time.

Learn how to run advanced test scenarios utilizing the JSON Path Extractor, a JMeter plugin that enables extracting values from JSON responses. Start performance testing in no time.

The ultimate guide to JMeter assertions. Learn everything you need to know about JMeter assertions and get started immediately.

The ultimate guide to JMeter's beanshell. Everything you need to know to create flexible performance scripts for load testing your website or app.

Easily run JMeter tests without having to use the JMeter GUI. Learn five quick and new ways to execute JMX files and run your load tests.

Learn to monitor your Locust performance test results. The Locust framework works with Grafana - this guide will teach you to analyze your load tests results.

You should use open source load testing tools instead of LoadRunner. Read this post to learn why JMeter provides you with more load testing abilities & options. 

You have JMeter, but where do you start? This blog post will teach you to create your first load testing script in JMeter. Let's get started!

Load testing desktop applications with JMeter is possible! Read this blog post to learn how, by simulating a situation where hundreds or thousands of desktop applications are simultaneously accessing the backend server. 

As we approach the peak traffic Black Friday, Cyber Monday and the holiday season, let's revisit some recent cases  of websites of mobile apps crashing or experiencing slow load times at the worst time.

In certain file upload scenarios in JMeter, such as testing an upload via some REST API endpoint, you will need to build an HTTP request manually. Here we explain how you can create a multipart POST or PUT request from scratch.

We’ve covered before various ways to debug scripts in JMeter, but now you have the ability to debug scripts step-by-step and receive updates in real time. Here’s how.   Exit Compl

We’ve put together a three-part ‘series on how to use this JMeter. This time, we’ focus on building scripts, running tests in non-GUI mode, logging and error messages, debugging, configuring JMeter, parameterization and correlations.

Periodically when implementing advanced JMeter test scenarios, you may need to build a JMeter Variable from two or more other variables. This short post will look at how to do just that.   Th

The Apache JMeter team has just released JMeter 3.0, a major new release of the leading open source testing tool. It is loaded (no pun intended) with several new features and improvements.

We focus a lot of our posts here at the BlazeMeter blog on Apache JMeter, the leading open source load testing tool for load and performance testing, and even backend functional testing (more on that

Learn JMeter recording to create your load testing scripts. You can also easily use the free BlazeMeter Chrome Extension, and start your performance testing immediately!

Learn how to use Taurus, an open source test automation framework. Get everything you need from these resources and view the successful meetup we had about Taurus.

Are the load tests that you run fit for Agile product development? Are the different members of your team able to test at every development stage? A recording of our recent webinar, Agile Load Testing

According to a huge amount of data, user expectations for website speed and performance are growing. According to a report by Akamai, 49% of respondents expected web pages to load in under 2 seconds,

WebSocket protocol load testing with JMeter made easy. Get everything you need to know to run performance tests on your real time streaming connection.

With the introduction of our new AppDynamics integration, BlazeMeter users can now easily incorporate key performance metrics from AppDynamics into their test scenarios to more quickly identify hot spots in the system under test. Read more to find out how it works.

This post explains how to invoke OS commands and 3rd-party programs on local and remote machines,  right from your JMeter test.

When it comes to database load testing, in the majority of cases it’s enough just to execute a request or series of requests and measure the execution time. However, there may be some cases when you

  If you read our article, JMeter's Superpower: The HTTP Proxy Server, then you already know how to use JMeter's Proxy Server to record HTTP traffic.   But what if a web

Here is a helpful to have a handy guide for load testing professionals who are new to JMeter and BlazeMeter. We’ll take some of the familiar tasks and ideas from performance testing in general and shed a bit of light on how to approach those tasks in these next-generation tools.

We’re often asked about the difference between Concurrent Users and Hits or Requests per Second, also known as Throughput. Teams want to know the numbers they should be shooting for as performance

When looking at a load test, many people choose to focus on the specific elements involved in that specific test, including the number of threads that should be used, response times and hits. This

The question of when and how to use manual and automated testing in the application lifecycle usually has attracted much debate. In general, we follow our existing habits. Teams without a long history

As many of you know, JMeter is an open-source project created by Apache that serves as a load testing tool for analyzing and measuring the performance of a variety of services, with a focus on web applications. But for people who are new to JMeter, and even veteran users looking to revisit it from a big picture perspective, it's beneficial to have one source to find the best

When it comes to building an advanced JMeter test plan, you can encounter the requirement to run certain samplers with a certain probability. In this post, we’ll guide you through the options on configuring weighted load and highlight options provided by JMeter.

Let’s face it - testing native mobile apps isn’t easy. Trying to record and create test scenarios without spending hours on setup (or tearing your hair out in frustration) is even harder!

In our last post, JMeter's Superpower: The HTTP Proxy Server, we discussed how to use the HTTP Proxy Server to record testing scenarios.   The HTTP Proxy Server automatically adds

As Big Data and real-time web apps keep getting bigger, NoSQL databases are more popular than ever for data storage. This is especially true for NoSQL’s most popular database - MongoDB. Let’s take

When it comes to performance testing, it’s crucial that you can reuse response data. Almost (if not all!) load test scenarios assume that you:   Extract interesting aspects from a

JMeter version 2.13 is out - and the change list is extensive! So extensive that it’s not easy to identify the most valuable features. So I did it for you :)   Here are the top 4 features

There’s no getting around the fact that security is a major consideration for any website or app. Sure, if you’re sharing public information like weather forecasts or currency exchange rates, you can

Software development and testing has evolved a lot in recent years...   Software once ran without any external connectivity, and functionality testing was done locally. In the mid to late ninet

Are your load tests unnecessarily draining the company budget? Chances are, the answer is yes!   Why? When creating reliable test scenarios for performance tests, you need many temporary resour

Are you ready for the Super Bowl?   Sure, you have the potato chips at hand and the beers on ice...but will you need to abandon them to fix a website crash?   Here are three reasons why

February 14 is one month away. This gives you enough time to get your site or app ready for the influx of romantics buying gifts, cards, and even looking for love online.   But even with thorou

Does this picture look familiar?    If not, get ready to start seeing it a lot! More and more sites, applications and application frameworks are expected to start implementing protection fr

JMeter is a free, open source tool that can be run directly from its user interface and has become the standard for performance testing in modern IT today. But is it enough?   In the first part

There’s no doubt that high availability and scalability are vital for today’s networking-based applications. Just think of the millions of people using services like Google or Facebook at this very

Black Friday is over for another year and, as always, this critical e-commerce day has left a few casualties in its trail…   Let’s take a look at some of this year’s biggest

By default, JMeter scripts tend to be complex! But there are some great solutions that can help you. JMeter offers test fragmenting to minimize the amount of code in scripts and make them easier to

It was a privilege to sponsor the monumental AWS re:Invent conference this year.   We view our product and services as integral parts of the cloud industry, which is undoubtedly led by the Amaz

First Off - What is OAuth & Why do You Need it?   OAuth (the Open Standard for Authorization) is an open protocol which provides token-based authentication and authorization - as opposed to

Meter 2.12 is out! If you’re a JMeter user, you can now enjoy an enhanced GUI, new features and fewer bugs. Woohoo!   BlazeMeter is proud to support Apache JMeter. Our performance testing

How advanced are your skills as a performance tester? Do you know precisely where your strengths lie, what you still need to work on, and how to get the extra performance testing knowledge that you

If you want to master JMeter performance testing, it’s worth taking a leaf out of the book from the experts.   Advanced JMeter users usually come from a performance engineering background

Do you need to use JUnit in your testing processes? To answer this question, let’s take a look first at unit testing. Unit testing is the lowest resolution of testing in the software testing l

It might not be your preferred method, but sometimes black box testing is inevitable.  Here's an example of a scenario that I often encounter…   A client comes in and says: &ldq

What is the simplest test plan in JMeter?   It is a single Thread Group that contains both the HTTP Sample Requests AND the View Results Tree at the end of test plan.   But is it a good

When you’re writing JMeter scripts, the XPath Extractor prove to be very useful in cases where data from the response body is needed and when it becomes overly difficult to extract information using

You’re probably busy getting your website or app ready for Black Friday. But do you know how much it will cost your company if it does go down for a couple of minutes on the big day? Or which time of

The Webdriver Sampler is a great tool - but not everyone knows how to use it! In the past, we’ve covered how to use Selenium with JMeter's WebDriver Sampler. So today I’m going to answer the top ten

It was the biggest event on Apple’s 2014 calendar; the long awaited launch of the iPhone 6.   On September 9, Apple announced the iPhone 6, the 6 plus and its new smartwatch. Apple fans h

The ultimate guide for learning BeanShell for JMeter. Read and learn everything you need to know to write load test scripts in BeanShell to improve your tests.

Load testing is a vital part of any web-based application testing process.   It helps us determine a system’s behavior under both normal and anticipated peak load conditions. It also help

If you're looking into software testing methods, it’s worth exploring White (or Glass/Transparent) Box testing vs Black Box testing.   The idea behind White Box testing is that the te

E-mail is one of the most commonly used communication channels in the modern world. Gmail, Hotmail and Yahoo Mail have over 1 billion registered users. Over 300 billion email messages are sent daily

  In my last post I covered the Challenges of Performance Testing in a Scaled Down Environment. This week, I’m going to address what you should check when scaling down for a performance te

In an ideal world, we’d perform load testing on applications by running tests on an exact copy of the live production environment - including the application components, configuration and demand.

Before discussing UI and API load tests, there are a few key differences we should take into consideration. For a UI, you want to test the load of an actual user scenario. For example: logging in,

This is the third post in our series on “Using JMeter Functions”. Missed the last two? Take a look at Using JMeter Functions - Part I and Using JMeter Functions - Part II .

JMeter has three types of JMS samplers, that support two types of JMS testing, and in this article I will cover them.   The first thing that needs to be done is provide JMeter with a jar file c

This post will cover the use of the JMeter Synchronizing Timer. First, let’s define when you’d like to use the JMeter Synchronizing Timer.   A high-level overview of performance tes

ASP.NET is a unified web development model which allows developers to quickly build enterprise level dynamic web applications. It was released by Microsoft in the early 2000s and became an industry

Debugging is, arguably, the most important software development practice. Software doesn’t work immediately upon coding: you need to detect bugs and fix them. Apache JMeter scripts are no exception.

In our previous post we discussed handling pages and resources that are protected with Basic HTTP Authentication. In this post we will provide a walkthrough of how to deal with advanced external

In some performance testing use cases it is not enough to just check how long it takes for a server to render a page, produce a set of search results or create an entity. For certain application types

During your recent forays into JMeter (from JMeter V2.10+), you may have noticed a new, colorful icon. Well, it’s definitely time to check out JMeter’s new Template feature. It's totally fabulous dahhling.

For your intellectual dining pleasure, on today's JMeter menu we have:   Property Types 2 System Properties 2 Example use case: changing “file.encoding”

JMeter's Transaction Controller – a Logic Controller which generates a “virtual” sample to measure transaction times. Wrapping your test sequence in the Transaction Controller, like a luxurious cashmere blanket, enables aggregate time for all nested transaction measurements, which enables “embedded resources” scenario timings collection and simplifies reporting for end-to-end

The Apache Software Foundation has been uber busy. After what must have been a super intensive Q4 2013,  JMeter V2.11 was released a few days into the New Year on January 5th, 2014 (shout out to

There are several options to perform custom JMeter scripting and extend baseline JMeter functionality. Check out the most popular extension mechanisms, compare performance and analyze which one is

Learn to add Regular Expressions to your load test by adding the Regular Expression Extractor to JMeter. Extract parameters for optimizing your performance tests.

Web-browsers have some mechanisms which allow for the reduction of traffic over the Internet. One such item is the caching of resources downloaded from the network, for use in the subsequent requests

How to Create a JMeter Script to Check Email During Registration AND Grab the Confirmation URL:Who said tricks are for kids? Not us. Especially when it comes to JMeter tricks and shortcuts. Today, we'll review how to create a script sample which will allow you to check e-mail during the registration process and grab confirmation URL from the e-mail. Generally, registration is

JMeter 2.9: The lowdown Recently, the Apache Software Foundation announced the release of Jmeter 2.9.  Very exciting.  Let's take a closer look at what the ASF JMeter team has prepared

  Super Bowl Day, Are you ready? Are you really ready? The highly anticipated Super Bowl commercials….even the non-sports fanatics love this time of year. What hilarious or shocking ad i

Sometimes testing an entire website is not enough. Sometimes, you also need to test the website or web-app database itself. More work you say? Why do we have to you say? First of all-don't desp

Generally, we discuss using different elements of JMeter. But often, JMeter is used for implementing more complex tasks. So today, we'll show you how to create an entire script. For script creat

Time flies. We were just introduced to a damn fine JMeter 2.7. After what feels like a whirlwind love affair, JMeter 2.8 emerged making our heart swoon all over again. And of course, as BlazeMeter is

Not too long ago, in a galaxy that has a delicious candy bar as its namesake, we came face to face with JMeter 2.7.   Since it's a tad surprising to come across a new release so soon after J

Ok, what's the bottom line: Why do we run load tests? For fun? (well, sometimes, load testing IS pretty cool.) We perform load and performance tests to make certain that our hard work designing,

In previous articles we reviewed some nifty little tricks for building test plans using JMeter. You can easily develop scripts which will execute several HTTP Requests with or without any data.

Once the functional testing phase is done, it's time for the fun of performance testing. And here you have a major decision. Paper or plastic? No, not that question, but close. Both questions off

Just kidding. No 511 Davida or like is on their way to crash and destroy the earth......hopefully. In a previous post about jmeter.properties we’ve reviewed several entries from jmeter.prope

Our previous and most delightful post described how to use variables in a single thread group. But as you already know, it is impossible to pass variables between different thread groups. How do we u

User Defined Variables! JMeter's tool to avoid duplication How do we use use variables in one thread group? You can store values that can be used in different parts of the load testing scena

“When developing applications for Facebook you hope the application will go viral and you also fear it will go viral, so capacity testing is critical,” stated Mike Valenty, Technical Direc

Using JMeter with BlazeMeter's load testing cloud. JMeter has a major superpower: the ability to record traffic in a single bound (or, in non super hero speak, as it happens).This feature allows testers to avoid the long task of manually recording traffic and automates the task. The HTTP Proxy Server is the tool the superpower operates through, much like Wonder Woman's magic

In the majority of different resources about performance testing, the selection of the right listener for the test is very important thing because each listener takes varying amounts of system memory.

Performance testing is a whole other animal in the world of good development. Read on for a brief journey to the wild side of testing.   In functional testing, detailed requirements are needed

If it would be possible to develop web-applications without performance issues i.e. the Excalibur of development, the Arthurian developer of such an application would be crowned King of the Web Develo

In our previous post related to using functions, we covered the top 3 most commonly used JMeter functions: __log(), __BeanShell() and__RandomString().   Today we've got another 5 for y

KGQAJTW5NM2B **Updated 8.28.13- Updated-This feature is now available to launch Selenium tests (not just monitor them!). Learn how to Use Selenium with JMeter's WebDriver Sampler.   JMeter

One of the 7 deadly sins of the coding universe is the unnecessary duplication of code. How can we avoid the 'deadly dupe' in JMeter?  Sometimes one comes across a complex piece of a te

Further fanciful functionality of JMeter is using functions.  (Say that 5 times fast). So, what are functions in JMeter?   According to the user manual, JMeter functions are special value

Now that everyone has had a couple of weeks to play around with the release of JMeter 2.6, let’s discuss the new GUI. In your face! Users are immediately confronted with the new GUI afte

KGQAJTW5NM2B This is the first post in a series detailing all the new features JMeter has introduced in the latest releases; 2.5 and now 2.6. And people, it's a whole new playing field. In this

Load testing of websites has changed dramatically in the past few years. While cloud based services such as Blazemeter have made it a lot easier to conduct load tests, the changing nature of hosting a