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Kas saak selgitada, mida tähendab termin Thread Explosion ja kuidas seda vältida?

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Thread Explosion — is a situation where an application creates too many threads simultaneously, leading to significant management overhead, reduced performance, and potential crashes due to exhaustion of system resources. In iOS, this can manifest, for example, when creating many threads manually or overusing GCD without control.

To prevent Thread Explosion:

  • Use a thread pool or task queues (e.g., DispatchQueue in GCD) that reuse a limited number of threads.
  • Avoid creating threads in loops or for each small task.
  • Optimize tasks to execute quickly and not block threads.
  • Use asynchronous operations and priority operations to distribute load efficiently.

Example of using DispatchQueue to manage tasks without creating many threads:

DispatchQueue.global(qos: .background).async {
    // Execute background task
}

This allows the system to manage the number of threads and avoid their explosive growth.