Swift Concurrency is Not That Hard (Once You Read This)

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Jul 15, 2025

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If you’ve ever looked at concurrency in Swift and thought, “This is going to be painful,” you’re not alone. Managing threads, avoiding race conditions, keeping the UI responsive — yeah, it used to feel like juggling and flaming.

But then Swift Concurrency showed up and said, “Hold my async.” And everything changed.

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Let’s break down some key Swift Concurrency features that’ll help you:
✅ Write async code that actually makes sense
✅ Keep your UI running smooth as butter
✅ Avoid 😵‍💫 thread nightmares and callback pyramids of doom

async and await: The Foundation

Let’s start with the basics: async and await. They allow you to write asynchronous code as if it were synchronous. No more completion handlers tangled in closure spaghetti.

Before Swift Concurrency:

fetchUser { result in
    switch result {
    case .success(let user):
        fetchPosts(for: user) { posts in
            updateUI(with…