Save mongodb document in each for loop iteration, instead of waiting to for loop finish -

i want create new document in each iteration, not as-is, documents stored after loop has finished iterations. have wait on 58.000 items in loop, until saves database...

isn't possible tell mongoose somehow save each document after each iteration on loop?

the mongoose schema i'm referring in code called: partcluster

const mongoose = require("mongoose"); const fuzzball = require("fuzzball"); const companypart = require("../../models/parts"); const partcluster = require("../../models/partclusters");  mongoose.connect("mongodb://localhost:27017/automdm", {   keepalive: true,   reconnecttries: number.max_value,   usemongoclient: true });  mongoose.promise = global.promise;  mongoose.connection.on("error", err => {   console.error(`mongoose connection error: ${err}`);   process.exit(1); });  companypart.find({}, { partname: 1 }, (err, parts) => {   var obj = {};   (var = 0, len = parts.length; < len; i++) {     obj[parts[i]["partname"]] = parts[i];   }   parts = new array();   (var key in obj) {     parts.push(obj[key]);   }   createcluster(parts); });  function createcluster(arrayofparts) {   let usedstrings = [];   let clusterarray = [];   len = arrayofparts.length;   (var = 0; < arrayofparts.length; i++) {     let cluster = [];     y = 1;     if (usedstrings.includes(arrayofparts[i].partname)) {       continue;     }     console.log(`item: ${i}, partname: ${arrayofparts[i].partname}`);     (var j = y; j < arrayofparts.length; j++) {       if (         fuzzball.token_sort_ratio(           arrayofparts[i].partname,           arrayofparts[j].partname         ) > "70"       ) {         if (           arrayofparts[i].partname.tolowercase() !==             arrayofparts[j].partname.tolowercase() &&           !cluster.includes(arrayofparts[j].partname) &&           !usedstrings.includes(arrayofparts[j].partname)         ) {           cluster.push(arrayofparts[j].partname);           usedstrings.push(arrayofparts[j].partname);         }       }     }     if (cluster.length > 0) {       let obj = {};       obj.clustername = arrayofparts[i].partname;       obj.partcluster = cluster.sort();       const query = { clustername: arrayofparts[i].partname };       const update = obj;       const options = { upsert: true };       partcluster.findoneandupdate(query, update, options, (error, result) => {         if (error) {           console.log("error when saving cluster: ", error);         }       });     }   } } 

example docs parts

const parts = [     {"_id":"59a942a8c0b7467bf08711df","partname":"0"},     {"_id":"59a94299c0b7467bf084a917","partname":"9129"},     {"_id":"59a94299c0b7467bf084a918","partname":"9130"},     {"_id":"59a94297c0b7467bf08455e0","partname":"9132"},     {"_id":"59a94298c0b7467bf084701f","partname":"9176"},     {"_id":"59a94298c0b7467bf084809f","partname":"9180"},     {"_id":"59a94295c0b7467bf083edf3","partname":"9187"},     {"_id":"59a94298c0b7467bf0848439","partname":"9190"},     {"_id":"59a94295c0b7467bf083ed35","partname":"9227"},     {"_id":"59a94295c0b7467bf083ed36","partname":"9235"},     {"_id":"59a94298c0b7467bf0847032","partname":"9237"},     {"_id":"59a94298c0b7467bf0848438","partname":"9257"},     {"_id":"59a94298c0b7467bf0848c39","partname":"9279"},     {"_id":"59a94295c0b7467bf083edae","partname":"9424"},     {"_id":"59a94295c0b7467bf083edb3","partname":"9425"},     {"_id":"59a9429ec0b7467bf08563ec","partname":"9430"},     {"_id":"59a9429ec0b7467bf08563f6","partname":"9435"},     {"_id":"59a94295c0b7467bf083edb9","partname":"9542"},     {"_id":"59a94295c0b7467bf083edc4","partname":"9577"},     {"_id":"59a942a9c0b7467bf0871bc0","partname":"2651513067"},     {"_id":"59a942aac0b7467bf0874ba5","partname":"cover"},     {"_id":"59a942aac0b7467bf0874923","partname":"bracket"},     {"_id":"59a942a7c0b7467bf086e714","partname":"ring-snap"},     {"_id":"59a942aac0b7467bf087443e","partname":"retainer"},     {"_id":"59a942aac0b7467bf08749d4","partname":"spring"},     {"_id":"59a942aac0b7467bf08748c8","partname":"housing"},     {"_id":"59a942a7c0b7467bf086eaef","partname":"wagner part"},     {"_id":"59a942aac0b7467bf0874a4f","partname":"ring"},     {"_id":"59a942aac0b7467bf0874aef","partname":"gear"},     {"_id":"59a942a8c0b7467bf086f701","partname":"head"},     {"_id":"59a942aac0b7467bf08741f2","partname":"wiper"},     {"_id":"59a942aac0b7467bf08749ea","partname":"seal"},     {"_id":"59a94293c0b7467bf08351d6","partname":"piston sys"},     {"_id":"59a942a7c0b7467bf086eac5","partname":"o-ring-viton"},     {"_id":"59a942aac0b7467bf08749cb","partname":"shim"},     {"_id":"59a942a6c0b7467bf086aa6b","partname":"cage"},     {"_id":"59a942aac0b7467bf0873e29","partname":"rod"},     {"_id":"59a942aac0b7467bf0874a30","partname":"element"},     {"_id":"59a942aac0b7467bf0874bb6","partname":"plate"},     {"_id":"59a942aac0b7467bf087498e","partname":"diaphragm"},     {"_id":"59a94293c0b7467bf08351e1","partname":"support      -upper"},     {"_id":"59a942aac0b7467bf0874a76","partname":"valve"},     {"_id":"59a942aac0b7467bf0873fe5","partname":"lock"},     {"_id":"59a94293c0b7467bf08351e7","partname":"flang-split"},     {"_id":"59a942a9c0b7467bf0872e56","partname":"lockwasher"},     {"_id":"59a942aac0b7467bf087425c","partname":"capscrew"},     {"_id":"59a942aac0b7467bf0874b4d","partname":"hose"},     {"_id":"59a942aac0b7467bf0874bc9","partname":"hose assembly"},     {"_id":"59a942aac0b7467bf0874b58","partname":"washer"},     {"_id":"59a942aac0b7467bf0874b96","partname":"bearing"},     {"_id":"59a942a7c0b7467bf086e06d","partname":"diode assy"},     {"_id":"59a94293c0b7467bf08351f0","partname":"brush assy"},     {"_id":"59a942a7c0b7467bf086e9b1","partname":"board"},     {"_id":"59a942a8c0b7467bf0870900","partname":"cable assy"},     {"_id":"59a942aac0b7467bf0874ad6","partname":"nut"},     {"_id":"59a942aac0b7467bf0874af7","partname":"screw"},     {"_id":"59a942aac0b7467bf0874aa4","partname":"bushing"},     {"_id":"59a942aac0b7467bf0874ad7","partname":"stud"},     {"_id":"59a942aac0b7467bf0874b7c","partname":"bolt"},     {"_id":"59a942aac0b7467bf0874928","partname":"cylinder"},     {"_id":"59a942aac0b7467bf08749ba","partname":"retaining ring"},     {"_id":"59a942aac0b7467bf0874a39","partname":"clamp"},     {"_id":"59a942aac0b7467bf08749dd","partname":"plug"},     {"_id":"59a94293c0b7467bf0835208","partname":"spr booster"},     {"_id":"59a942a9c0b7467bf087325b","partname":"flange screw"},     {"_id":"59a942aac0b7467bf0874a75","partname":"o-ring"},     {"_id":"59a942aac0b7467bf0874b51","partname":"cap"},     {"_id":"59a942aac0b7467bf0874945","partname":"baffle plate"},     {"_id":"59a9429ac0b7467bf084f061","partname":"clamp, hose"},     {"_id":"59a942a9c0b7467bf0873a70","partname":"boot"},     {"_id":"59a942aac0b7467bf0874b73","partname":"switch"},     {"_id":"59a942aac0b7467bf0874156","partname":"hose assy"},     {"_id":"59a942aac0b7467bf0874b3b","partname":"piston"},     {"_id":"59a942aac0b7467bf08740c0","partname":"rotor"} ] 

docs saved in mongodb:

/* 1 */ {     "_id" : objectid("59b5f107366901668ab00074"),     "clustername" : "9129",     "__v" : 0,     "partcluster" : [          "9132",          "9190",          "9279"     ] }  /* 2 */ {     "_id" : objectid("59b5f107366901668ab00075"),     "clustername" : "9130",     "__v" : 0,     "partcluster" : [          "9180",          "9430"     ] }  /* 3 */ {     "_id" : objectid("59b5f107366901668ab00078"),     "clustername" : "9176",     "__v" : 0,     "partcluster" : [          "9187"     ] }  /* 4 */ {     "_id" : objectid("59b5f107366901668ab00079"),     "clustername" : "9227",     "__v" : 0,     "partcluster" : [          "9237",          "9257"     ] }  /* 5 */ {     "_id" : objectid("59b5f107366901668ab0007d"),     "clustername" : "9424",     "__v" : 0,     "partcluster" : [          "9542"     ] }  /* 6 */ {     "_id" : objectid("59b5f107366901668ab0007e"),     "clustername" : "spring",     "__v" : 0,     "partcluster" : [          "ring"     ] }  /* 7 */ {     "_id" : objectid("59b5f107366901668ab0007f"),     "clustername" : "housing",     "__v" : 0,     "partcluster" : [          "bushing"     ] }  /* 8 */ {     "_id" : objectid("59b5f107366901668ab00083"),     "clustername" : "piston sys",     "__v" : 0,     "partcluster" : [          "piston"     ] }  /* 9 */ {     "_id" : objectid("59b5f107366901668ab00084"),     "clustername" : "capscrew",     "__v" : 0,     "partcluster" : [          "screw"     ] }  /* 10 */ {     "_id" : objectid("59b5f107366901668ab00086"),     "clustername" : "clamp",     "__v" : 0,     "partcluster" : [          "cap"     ] }  /* 11 */ {     "_id" : objectid("59b5f107366901668ab00087"),     "clustername" : "lockwasher",     "__v" : 0,     "partcluster" : [          "washer"     ] }  /* 12 */ {     "_id" : objectid("59b5f107366901668ab0008a"),     "clustername" : "bolt",     "__v" : 0,     "partcluster" : [          "boot"     ] }  /* 13 */ {     "_id" : objectid("59b5f107366901668ab0008b"),     "clustername" : "hose assembly",     "__v" : 0,     "partcluster" : [          "hose assy"     ] }  /* 14 */ {     "_id" : objectid("59b5f107366901668ab0008d"),     "clustername" : "9235",     "__v" : 0,     "partcluster" : [          "9425",          "9435"     ] }