Comment by mnazzaro

1. The pools are very shallow- two machines per pool. While it's certainly possible for 3 tasks to get requested in the same region within 30 seconds, we handle that by falling back to the next closest region if a pool is empty. This is uncommon, though. 2. I haven't considered it, but yeah- the caching seems to work great for us. 3. The tokens are generated per-task, so if you are worried about your token getting leaked, you can just delete the task!