Pro Kotlin Web Apps from Scratch: Building Production-Ready Web Apps Without a Framework

© The Author(s), under exclusive license to APress Media, LLC, part of Springer Nature 2023

A. LilleaasPro Kotlin Web Apps from Scratchhttps://doi.org/10.1007/978-1-4842-9057-6_8

8. Parallelizing Service Calls with Coroutines

August Lilleaas¹  

(1)

Oslo, Norway

 

In this chapter, you’ll learn how to perform service calls (i.e., call external APIs) and how to do so efficiently. Few web apps operate in isolation, and most real-world web apps use a combination of a database and calls to external services to do their work.

If you’re new to Kotlin, here are some language features that you’ll see examples of in this chapter:

• Using coroutines from different contexts

• The difference between kotlin.coroutines and kotlinx.coroutines

Also in this chapter, you will ...