Stop batching polling query fetches. #4800
Merged
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The last time I touched this code in #4243, I thought it was worthwhile to preserve the behavior of sometimes batching polling query fetches in the same tick of the event loop.
However, as @voxtex points out in #4786, almost any batching strategy will lead to unpredictable fetch timing, skipped fetches, poor accounting for fetch duration (which could exceed the polling interval), and so on. On top of that, even the premise that "batching is good" comes into question if it doesn't happen consistently.
An implementation which uses independent timers seems much simpler and more predictable.