It isn’t always practical to introduce a delay, but in cases where it is, I’ve used the following trick to allow a failing worker to “keep trying indefinitely” without hitting max restart intensity. In my worker, I use Process.send_after or :timer.sleep() to introduce a delay before executing the code that might fail. If the delay is greater than the max_seconds option you passed to Supervisor.start_link/2, then even if the worker fails repeatedly, it won’t fail frequently enough to exceed max restart intensity. It’s not elegant, but it is simple. Obviously this only suits certain cases, often it won’t be acceptable to introduce delays.
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