通过API删除资源组时，beginDeleteByName与deleteByNameAsync的区别

Great question! Let’s break down the key differences between these two methods—they’re standard in cloud SDKs (like Azure’s Java or .NET offerings) for managing resource groups, so I’ll focus on real-world usage scenarios:

• Execution Model: Async vs. Async with Long-Running Operation (LRO) Handle

  • deleteByNameAsync is a straightforward asynchronous method that returns a Future (Java) or Task (.NET) instantly. You can await it to block until deletion completes, or attach callbacks to handle success/failure without tying up your main thread. It’s a "fire-and-wait" (if you await) or "fire-and-forget" (if you don’t) approach.
  • beginDeleteByName kicks off an asynchronous deletion but immediately returns an LRO handle (like ResourceGroupDeleteOperation in Java or Operation<ResourceGroup> in .NET). This handle lets you actively poll for status updates, check if the deletion is still in progress, or explicitly wait for completion. It’s built for operations that take time—think deleting a resource group with dozens of VMs, databases, or storage accounts.

• Return Value & Workflow

  • deleteByNameAsync: When you await the returned task/future, it will only resolve once the deletion is fully finished (or throw an exception if it fails). You don’t get visibility into intermediate steps—just the final result.
  • beginDeleteByName: The LRO handle gives you control over the workflow. You can call methods like waitForCompletion() to block until done, or use getPoller() to periodically check if the deletion is still running, succeeded, or failed. This is perfect if you need to log progress or update a user interface while the operation runs.

• Error Handling

  • For deleteByNameAsync, all errors (like invalid resource group names, permission issues, or mid-deletion failures) will be thrown when you await the task/future. It’s a single point to catch exceptions.
  • With beginDeleteByName, errors can occur in two places: when you first call the method (e.g., invalid input) or when you poll for completion (e.g., deletion failed halfway through). You’ll need to handle exceptions both when initiating the operation and when checking its status.

• Ideal Use Cases

  • Use deleteByNameAsync for simple scenarios where you just need to delete a resource group and don’t care about tracking progress. It’s quick and easy for small resource groups or scripts where you can wait for completion.
  • Use beginDeleteByName if you need to:
    • Track deletion progress (e.g., log "Deleting resource group... 50% done")
    • Cancel the deletion operation (some SDKs support this via the LRO handle)
    • Run other tasks concurrently while the deletion is in progress
    • Manage large resource groups where deletion might take several minutes

内容的提问来源于stack exchange，提问作者user2071703