Message416279
> If you don’t look it up every time, how do you deal with DNS timeouts?
Do you mean expiring the IP address when the TTL is reached? I suppose that could be an issue for a long-running service, and I don't have a good answer to that. Possibly these days with services meshes and load-balancers it is less of a concern since a logging server can move without changing its IP address.
But it's important for a logging system not to block the service doing the logging (which is one reason for using UDP in the first place). I only discovered this issue because of some flaky DNS servers that would occasionally take several seconds to answer a query, and block the whole asyncio event loop while it waited.
At a minimum it would be useful to document it, so that you know it's something to be concerned about when using DatagramHandler. |
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2022-03-29 17:49:35 | bmerry | set | recipients:
+ bmerry, eric.smith |
2022-03-29 17:49:35 | bmerry | set | messageid: <1648576175.77.0.644528210321.issue47149@roundup.psfhosted.org> |
2022-03-29 17:49:35 | bmerry | link | issue47149 messages |
2022-03-29 17:49:35 | bmerry | create | |
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