coroutines-suspend-functions

Kotlin suspend functions work by pausing execution at suspension points and saving state into a Continuation object, allowing asynchronous code to resume without blocking threads. This mechanism enables non-blocking asynchronous workflows.

To bridge callback-based APIs to Kotlin coroutines, wrap your callbacks using suspendCancellableCoroutine to expose a suspending function surface. This pattern converts callback registration into a suspend function that resumes upon callback invocation.

Mark a function as suspend when it performs long-running or asynchronous tasks like network or database operations. Suspend functions are needed when you must pause execution without blocking threads and rely on coroutine continuations to resume.

Yes, you need a coroutine scope to call suspend functions in Android apps. Suspend functions rely on coroutine continuations for execution, requiring a structured concurrency environment to safely manage suspension and resumption.

A Kotlin coroutine continuation leaks memory when it is not properly cancelled after suspension. Ensure you use structured concurrency and safe suspension patterns to prevent continuation leaks during asynchronous work in backend services.

Suspend functions are better than callbacks for asynchronous backend services because they provide sequential code readability while avoiding thread blocking. Coroutines manage continuations transparently, replacing nested callbacks with linear control flow.