Gatling is a presentation made at XT Hyderabad. It is a performance testing tool in scala language.

1. Xtreme Testing
Gatling

2. Virtual User

3. Request protocol

4. Request Protocol
scenario("Standard User")
.exec(http("Access Github").get("https://github.com"))
.pause(2, 3)
.exec(http("Search for
'gatling'").get("https://github.com/search?q=gatling"))
.pause(2)

5. Scenario

6. Scenario
scenario("Standard User")
.exec(http("Access Github").get("https://github.com"))
.pause(2, 3)
.exec(http("Search for
'gatling'").get("https://github.com/search?q=gatling"))
.pause(2)

7. Simulation

8. Simulation
val stdUser = scenario("Standard User")
setUp(
stdUser.inject(atOnceUsers(2000)),
stdUser.inject(nothingFor(60 seconds), rampUsers(5) over
(400 seconds)),
stdUser.inject(rampUsers(500) over (200 seconds)))

9. Session

10. Feeders

11. Feeders
■ CSV feeder
■ JSON feeder
■ JDBC feeder
■ Sitemap feeder
■ Redis feeder

12. Feeder
val feeder = csv("foo.csv").random
val scn1 = scenario("LoginSimulation").feed(feeder)
http("loginmultiuser")
.post("/login")
.headers(headers_0)
.formParam("email", "${username}")
.formParam("password", "${password}")
.check(substring("${displayname}").exists)

13. Feeder
val feeder = csv("foo.csv").random
.queue // default behavior: use an Iterator on the underlying sequence
.random // randomly pick an entry in the sequence
.shuffle // shuffle entries, then behave live queue
.circular // go back to the top of the sequence once the end is reached

14. Checks

15. Checks
■ Defining the check type
■ Extracting
■ Transforming
■ Validating
■ Saving
http("My Request").get("myUrl").check(status.is(200))
http("loginoneuser") .post("/login").headers(headers_0).formParam("email",
username).formParam("password", password)
.check(headerRegex("Set-Cookie", "XSRF-TOKEN=(.*)").saveAs("xsrf_token"))

16. Assertions

17. Assertions
// Assert that the max response time of all requests is less than 100 ms
setUp(scn).assertions(global.responseTime.max.lt(100))
// Assert that every request has no more than 5% of failing requests
setUp(scn).assertions(forAll.failedRequests.percent.lte(5))
// Assert that the percentage of failed requests named "Index" in the group "Search"
// is exactly 0 %
setUp(scn).assertions(details("Search" / "Index").failedRequests.percent.is(0))
// Assert that the rate of requests per seconds for the group "Search"
setUp(scn).assertions(details("Search").requestsPerSec.between(100, 1000))

18. References
■ https://gatling.io/documentation/

19. Thank You
For questions or suggestions
mailto: xt-hyderabad@thoughtworks.com
nalinim@thoughtworks.com
Xtreme Testing