var Redis = require('ioredis');
var redis = new Redis();

(async () => {
    var myKey = 'myKey';
    await redis.del(myKey);

    var script = `
        local ids = ARGV
        for i, k in ipairs(ids) do
            redis.call("setbit", KEYS[1], k, 1)
        end
    `;

    await redis.defineCommand('setBits', {
        numberOfKeys: 1,
        lua: script
    });

    console.log('memory: ' + process.memoryUsage().heapTotal/1024/1024 + 'MB');

    var values = [];
    for(var i = 0; i < 1000000; i++){
        values.push(i);
    }

    console.log('memory: ' + process.memoryUsage().heapTotal/1024/1024 + 'MB');

    console.log(`setting ${values.length} bits!`);
    console.time("setbits took");
    await redis.setBits(myKey, values);
    console.timeEnd("setbits took");

    console.log('memory: ' + process.memoryUsage().heapTotal/1024/1024 + 'MB');
})();