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  "cid": "bafyreidggyfxqi5c55amxfy3lsvarnda2xyi52ig46dkf5izqfee665kaa",
  "value": {
    "text": "and the acceptable:\n- a little insert regression for small–medium cardinalities, which use an array representation whose vectorized search i ditched. could bring back.\n- very small memory overhead, surprisingly not much more used!!",
    "$type": "app.bsky.feed.post",
    "embed": {
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      "images": [
        {
          "alt": "time vs cardinality. they are marched below cardinality =3 and above 32768. almost 2x slowdown for cardinality=4, which largely gradually improves. a smaller slowdown happens 4096–16384",
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        },
        {
          "alt": "bytes vs cardinality. until 256 there is a gap which narrows as the memory used increases to a constant amount at cardinality=256. at that point on there remains a present-but-very small overhead for the safe version.",
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    "createdAt": "2025-05-06T21:15:58.308Z"
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