Testing in Postman: Identifying Bottlenecks in API Performance

Skillsoft issued completion badges are earned based on viewing the percentage required or receiving a passing score when assessment is required. A number of factors affect your application programming interface’s (API's) performance - the system's design, the system resources of your API server, and whether you use caching or not. Performance testing using Postman and niche tools such as k6 can help identify scalability issues and bottlenecks in your system. Begin this course by setting up a cloud-hosted API server on the Google Cloud Platform (GCP). Then you will set up a PostgreSQL database on the cloud and use that as the backend of your API server. Next, you will run performance tests using Postman and identify how a poorly designed system results in very high average response times for requests. You will explore the effects of other configurations on performance such as system resources, caching, and slow-running requests, and learn how to debug these issues using Postman performance testing. Finally, you will run performance tests using k6, including stress, soak, spike, and breakpoint tests, all designed to test different load scenarios.