Tutorial by Examples: g

In version 2.10, JMeter introduced a mechanism that saves you time when creating scripts - JMeter Templates. These templates are skeletons that can be reused as the base for your new scripts. JMeter already has several available templates with detailed descriptions, and you can also add your own. T...

JMeter also enables you to manually configure your workspace. It’s more complex, but you can make the scripts fit your exact needs. Configure your browser proxy Configure your browser, as described in chapter 1. Configure JMeter The “WorkBench” branch can be used as a temporary workspace for...

JMeter can also can be used for recording mobile performance testing. Mobile scripts recording is very similar to web application scripts recording. Configure JMeter Configure “JMeter Templates” as specified in chapter 1. Configure your mobile phone After the JMeter configuration is prepared...

If your web application uses the SSL encryption, you need to capture HTTPS traffic instead of HTTP. To record HTTPS Traffic with JMeter, you need to configure the SSL certificates. Configure your SSL proxy Make sure the SSL proxy is configured the same way the HTTP proxy is configured: Conf...

So far we’ve covered the basic ways to record test scenarios. But one of the fastest and easiest ways to record your performance scripts, which is also free, is to use the BlazeMeter Recorder Chrome extension. These recordings can be run in JMeter or in BlazeMeter. The reason the extension is so us...

Another useful 3rd party recording tool is BadBoy. However, it works only for Windows OS. To create a new performance script: Install BadBoy here Enter the URL under test in the address bar Press the record button, shaped like a red circle and perform the actions you want to captur...

From the gnuplot 5.0 official online documentation: The command language of gnuplot is case sensitive, i.e. commands and function names written in lowercase are not the same as those written in capitals. All command names may be abbreviated as long as the abbreviation is not ambiguous. Any number...

This shows how to create the demo database used in big parts of Progress documentation: sports2000. This assumes you have installed the Progress products with at least one type of database license. Run proenv script/bat-file that will give you a prompt with all environment variables set. Create ...

imports: from subprocess import Popen, PIPE from lxml import etree from io import StringIO Downloading: user_agent = 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/55.0.2883.95 Safari/537.36' url = 'http://stackoverflow.com' get = Popen(['curl...

In the following example we will create a service with the name visualizer. We will specify a custom label and remap the internal port of the service from 8080 to 9090. In addition we will bind mount an external directory of the host into the service. docker service create \ --name=visual...

This simple exampe will create a hello world web service that will listen on the port 80. docker service create \ --publish 80:80 \ tutum/hello-world

import spock.lang.* class HelloWorldSpec extends Specification { @Shared message = 'Hello world!' def "The world can say hello using when and then"() { when: def newMessage = message then: newMessage == 'Hello world!' } ...

Contrary to Drupal 7 you cannot call regular PHP functions in your templates. In Drupal 8 the way to go is by creating filters and functions. You should use a filter when: you want to transform the data you want to display. Imagine you have a title that you want to always be uppercase. For example,...

This example will show you how to use Dependency Inject to use other services registered in the Drupal environment. Imagine you have an SVG image file that changes colors depending on some random CSS/Javascript thing in your project. To be able to target the SVG with CSS you have to actually have t...

Sometimes Lua doesn't behave the way one would think after reading the documentation. Some of these cases are: Nil and Nothing aren't the same (COMMON PITFALL!) As expected, table.insert(my_table, 20) adds the value 20 to the table, and table.insert(my_table, 5, 20) adds the value 20 at the 5th po...

There are several ways to mark a comment block as a detailed description, so that this comment block is parsed by Doxygen and added as a description of the following code item to the documentation. The first and most common one are C style comments with an extra asterisk in the comment start sequenc...

We create a dataset that we then fit with a straight line $f(x) = m x + c$. npoints = 20 slope = 2 offset = 3 x = np.arange(npoints) y = slope * x + offset + np.random.normal(size=npoints) p = np.polyfit(x,y,1) # Last argument is degree of polynomial To see what we've done: impor...

We use the same dataset as with polyfit: npoints = 20 slope = 2 offset = 3 x = np.arange(npoints) y = slope * x + offset + np.random.normal(size=npoints) Now, we try to find a solution by minimizing the system of linear equations A b = c by minimizing |c-A b|**2 import matplotlib.pyplot as...

In tables recording events there is often a datetime field recording the time an event happened. Finding the single most recent event can be difficult because it's always possible that two events were recorded with exactly identical timestamps. You can use row_number() over (order by ...) to make su...

from sqlalchemy import create_engine cnx = create_engine('mysql+pymysql://username:password@server:3306/database').connect() sql = 'select * from mytable' df = pd.read_sql(sql, cnx)