Learn advanced API testing techniques using Gatling in this comprehensive tutorial. Explore how to set up GET, POST, PUT, and DELETE API scenarios, including referencing POST API bodies from files. Master the use of feeders for parameterization, understanding different feeder strategies like queue, shuffle, random, and circular. Practice implementing feeders in scenarios and running actual requests with parameterized data. Gain hands-on experience in creating Gatling simulation scripts, adding checks, and analyzing test reports to enhance your API testing skills.