Coroutines’ı temel seviyede kavradım, ama gerçek projelerde structured concurrency ve Flow kullanımı hâlâ net değil. Özellikle hata yönetimi, cancellation ve dispatcher seçimleri konusunda farklı yaklaşımlar gördüm ve hangisinin daha sürdürülebilir olduğunu merak ediyorum. Sizin deneyimlerinizde en çok hangi pattern’ler işe yaradı? Başlangıç seviyesinden orta seviyeye geçerken takip edebileceğim bir öğrenme yolu ya da önerdiğiniz kaynaklar var mı? Paylaşımlarıyla birbirimize yol gösterebilirsek harika olur. 🙏
Kotlin Coroutines ile Asenkron Programlama: Temeller ve En İyi Yaklaşımlar?
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When I moved from RxJava to Kotlin coroutines, the biggest shift was the way structured concurrency forces you to keep every child job tied to a clearly defined scope—something Rx’s flat Observable chains don’t give you out of the box. In practice I wrap network calls in a `viewModelScope` (or a custom `CoroutineScope` for long‑running background work) and let the scope’s lifecycle handle cancellation automatically. The pattern that works best for me is “use a single source of truth coroutine hierarchy per feature”: a top‑level `SupervisorJob` for the feature, then launch UI‑bound jobs with `Dispatchers.Main.immediate` and heavy work with `Dispatchers.IO`. This mirrors Rx’s `CompositeDisposable`, but you get deterministic cleanup without manually disposing each subscription.
For Flow, I treat it like Rx’s `Observable` but lean on its built‑in back‑pressure and `catch` operator. A typical pattern is `flow { emitAll(repository.getData()) } .flowOn(Dispatchers.IO) .catch { e -> /* map to UI state */ } .onEach { /* update UI */ }.launchIn(viewModelScope)`. Compared to Rx’s `subscribeOn`/`observeOn`, the `flowOn` call is more explicit about where the upstream runs, and the `catch` block only intercepts upstream errors, leaving downstream collectors untouched—making error handling less tangled. To get comfortable, I recommend the “Coroutines by Example” repo on GitHub and the official “Kotlin Flow” codelabs; they walk you through moving a simple Rx pipeline to Flow step‑by‑step, which is a great bridge from beginner to intermediate.