What is Gatling scripting and how can I use it?

What is Gatling scripting and how can I use it for performance testing?

Gatling scripting is a way to define performance tests using a Scala-based DSL. You can simulate user behavior and measure system performance.

Can you give me an example of a simple Gatling script?

Sure! Here's a basic example:

import io.gatling.core.Predef._
import io.gatling.http.Predef._

val httpProtocol = http.baseUrl("http://example.com")

val scn = scenario("BasicScenario")
  .exec(http("request_1").get("/"))

setUp(scn.inject(atOnceUsers(1))).protocols(httpProtocol)

How do I run this script?

You can run the script using the Gatling command line. Navigate to the Gatling bin directory and execute ./gatling.sh (or gatling.bat on Windows) to start the simulation.

What are some common metrics I can analyze from the results?

Common metrics include response time, throughput, error rates, and the number of active users. These help you understand system performance under load.