Can you list and describe the chain construction patterns in coroutines?

In Android (Kotlin) coroutines, the following patterns are often used to build chains:

• Sequential execution: coroutines are called one after another, where the result of the previous is used in the next.

• Parallel execution with result aggregation: multiple coroutines are launched in parallel using async, and then results are collected via await.

• Error handling in chain: using try/catch inside coroutines to handle exceptions at each stage of the chain.

• Flow chaining: using Flow to build reactive chains with operators like map, filter, flatMap, etc.

Example of a sequential chain:

suspend fun fetchData(): Data = ...
suspend fun processData(data: Data): ProcessedData = ...
suspend fun saveData(processedData: ProcessedData) = ...

suspend fun chain() {
    val data = fetchData()
    val processed = processData(data)
    saveData(processed)
}

Example of a parallel chain:

coroutineScope {
    val deferred1 = async { fetchData1() }
    val deferred2 = async { fetchData2() }
    val result1 = deferred1.await()
    val result2 = deferred2.await()
    // combine results
}