Gatling Get Started

Gatling

Gatling is load testing framework based on Scala
You still use JMeter for load test?
Gatling is powerful and easy to use. Reporting function is nice.

Install

Just download and decompress.
gatling-charts-highcharts-bundle-x.x.x

I tried 2.2.3(2016/12/15) on Mac

Start Sample Script

There are some samples by default
Start script

sh bin/gatling.sh

You can see list of script. Let’s try 1

GATLING_HOME is set to /Users/dj110/lib/gatling-charts-highcharts-bundle-2.2.3
Choose a simulation number:
     [0] computerdatabase.BasicSimulation
     [1] computerdatabase.LocalHostTestSimulation
     [2] computerdatabase.advanced.AdvancedSimulationStep01
     [3] computerdatabase.advanced.AdvancedSimulationStep02
     [4] computerdatabase.advanced.AdvancedSimulationStep03
     [5] computerdatabase.advanced.AdvancedSimulationStep04
     [6] computerdatabase.advanced.AdvancedSimulationStep05
1
Select simulation id (default is 'localhosttestsimulation'). Accepted characters are a-z, A-Z, 0-9, - and _

Select run description (optional)

Simulation computerdatabase.LocalHostTestSimulation started...

Select 1 and others aren’t required to do. Press Enter.

Run script and the result is under results directory

Try my script

As next, let’s try our own script.

Please add script under /user-files/simulations/computerdatabase/advanced
LocalHostTestSimulation.scala

package computerdatabase
import io.gatling.core.Predef._
import io.gatling.http.Predef._
import scala.concurrent.duration._
class LocalHostTestSimulation extends Simulation {
  val httpConf = http
    .baseURL("http://localhost:8080") // Here is the root for all relative URLs

  val scn = scenario("Sample")
    .exec(http("request_1")
      .get("/"))
    .pause(100 milliseconds)

  setUp(scn.inject(rampUsers(20) over(5 seconds)) .protocols(httpConf))

}

This sample tries 20 requests / 5 seconds.
Try localhost:8080

I tested my spring boot + Angular 2 + webpack Sample app SpringBootAngular2

The results is under results directory

Reports

Report shows how many request success or fail, and response time, average response time etc…

Ref

便利すぎる負荷試験テストツールGatlingの使い方~自力ソース編~
Reports – Gatling