perf.js

let kv = {};
let set = new Set();
let map = new Map();
const { performance } = require('perf_hooks');

const numOfBlacklisted = 3500000;
const numOfChecks = 100000;

const putToKv = (ip) => {
  kv[ip] = true;
}

const putToSet = (ip) => {
  set.add(ip);
}

const putToMap = (ip) => {
  map.set(ip, true);
}

const checkSet = (ip) => set.has(ip);
const checkMap = (ip) => map.has(ip);
const checkKV = (ip) => !!kv[ip];

// Functionality tests
putToMap('1.1.1.1');
console.log(checkMap('1.1.1.1')); // true
console.log(checkMap('1.1.1.2')); // false

putToKv('1.1.1.1');
console.log(checkKV('1.1.1.1')); // true
console.log(checkKV('1.1.1.2')); // false

putToSet('1.1.1.1');
console.log(checkSet('1.1.1.1')); // true
console.log(checkSet('1.1.1.2')); // false

const createIP = () => {
  const ipArr = [];

  for (let i = 0; i < 4; i++) {
    ipArr.push(Math.floor(Math.random() * 100000 % 256));
  }

  return ipArr.join('.');
}

let start = performance.now();
for (let i = 0; i < numOfBlacklisted; i++) {
  putToKv(createIP());
}
let end = performance.now();

console.log('KV PUT', end - start);

start = performance.now();
for (let i = 0; i < numOfChecks; i++) {
  checkKV(createIP());
}

end = performance.now();
console.log('KV Check', end - start);

kv = {}; // free up memory

start = performance.now();
for (let i = 0; i < numOfBlacklisted; i++) {
  putToSet(createIP());
}
end = performance.now();

console.log('--------------------------------------');
console.log('Set PUT', end - start);

start = performance.now();
for (let i = 0; i < numOfChecks; i++) {
  checkSet(createIP());
}


end = performance.now();
console.log('Set Check', end - start);

set = undefined; // free up memory

start = performance.now();
for (let i = 0; i < numOfBlacklisted; i++) {
  putToMap(createIP());
}

end = performance.now();

console.log('--------------------------------------');
console.log('Map PUT', end - start);

start = performance.now();
for (let i = 0; i < numOfChecks; i++) {
  checkMap(createIP());
}

end = performance.now();
console.log('Map Check', end - start);