I am try to load country names and want to save them in static variable. So that I do not hit in my database again and again. I am using express Js. Please suggest me How can i load country name in optimize ways
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1share your codePraveen Gehlot– Praveen Gehlot2020-01-06 11:40:07 +00:00Commented Jan 6, 2020 at 11:40
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Sorry I cannot share Company code but it is very similar to replied answersandip4069– sandip40692020-01-07 12:09:20 +00:00Commented Jan 7, 2020 at 12:09
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1 Answer
In node.js, modules are cached after the first time they are loaded. Every call to import/require will retrieve exactly the same object. A good way to achieve this is:
app.js
var app = require('express')(),
server = require('http').createServer(app);
var lookup=require('./lookup.js');
server.listen(80, function() {
//Just one init call
lookup.callToDb(function(){
console.log('ready to go!');
});
});
lookup.js
callToDb(function (country){
module.exports=country;
});
and wherever you require: model.js
var countryLookup= require('./lookup.js');
