Testing UUID distribution if used as sharding key

uuid_distribution_test.mjs

import crypto from "crypto";

const NUMBER_OF_SHARDS = 100;
const NUMBER_OF_ENTRIES = 100_000;

const shards = [];
for (let i = 0; i < NUMBER_OF_ENTRIES; i++) {
  const numericUUID = BigInt("0x" + crypto.randomUUID().replace(/-/g, ""));
  const shardId = Number(numericUUID % BigInt(NUMBER_OF_SHARDS));

  if (shards[shardId]) {
    shards[shardId]++;
  } else {
    shards[shardId] = 1;
  }
}

console.log(shards);

// Results:
// [
//     1048,  988, 1002, 1003,  977, 1023, 1009,  979, 1068, 1026,
//     1001, 1005,  975,  980, 1005,  994,  953, 1021, 1032,  986,
//      988, 1031, 1004, 1051, 1004, 1017,  975, 1044, 1011,  936,
//     1055, 1006,  940, 1052, 1009, 1021,  986,  980, 1026, 1018,
//     1035,  974, 1002,  994,  958,  959, 1004, 1020, 1022,  938,
//     1064,  984,  985,  999, 1007, 1001, 1029,  979, 1062,  935,
//      953, 1054, 1030,  992, 1007, 1006,  999,  986,  988, 1002,
//      997,  997,  958,  928, 1049,  983,  995,  972,  970,  986,
//     1029, 1003,  968, 1036, 1040, 1043, 1019, 1001,  966,  932,
//     1021,  942, 1038,  936,  977,  977, 1011, 1021, 1013,  995
//  ]