Separate thread for each user using node.jsHow do I debug Node.js applications?How do I get started with Node.jsWriting files in Node.jsHow do I pass command line arguments to a Node.js program?Read environment variables in Node.jsHow to decide when to use Node.js?How to exit in Node.jsWhat is the purpose of Node.js module.exports and how do you use it?For-each over an array in JavaScript?How do I update each dependency in package.json to the latest version?

On the expression "sun-down"

Can an unintentional murderer leave Ir Miklat for Shalosh Regalim?

HackerRank Implement Queue using two stacks Solution

What license to choose for my PhD thesis?

Can genetic genealogy identify father of male first cousins with same first name?

How to handle many times series?

Confused over role of 「自分が」in this particular passage

Skipping same old introductions

A wiild aanimal, a cardinal direction, or a place by the water

Is this popular optical illusion made of a grey-scale image with coloured lines?

How do people drown while wearing a life jacket?

Being told my "network" isn't PCI compliant. I don't even have a server! Do I have to comply?

How does shared_ptr<void> know which destructor to use?

Declaring a visitor to the UK as my "girlfriend" - effect on getting a Visitor visa?

Why does the friction act on the inward direction when a car makes a turn on a level road?

Is the first page of Novel really that important?

Difference between "jail" and "prison" in German

In-Cabinet (sink base) electrical box - Metal or Plastic?

Proof of First Difference Property for Fourier Series

Is it moral to remove/hide certain parts of a photo, as a photographer?

Reasons for using monsters as bioweapons

Where can I see modifications made to the PATH environment variable by the Go installer

Representation of the concatenation at the type level

How does Rust's 128-bit integer `i128` work on a 64-bit system?



Separate thread for each user using node.js


How do I debug Node.js applications?How do I get started with Node.jsWriting files in Node.jsHow do I pass command line arguments to a Node.js program?Read environment variables in Node.jsHow to decide when to use Node.js?How to exit in Node.jsWhat is the purpose of Node.js module.exports and how do you use it?For-each over an array in JavaScript?How do I update each dependency in package.json to the latest version?






.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;








0















I have this app that I deployed to heroku, the user id is sent with the api requests but it's just not working as I wish, on first tries it does the job and the function stop for the right user however when testing it with some hardcore settings like changing the browser, ip address, device, ect.. I got random results. The app crash, sometimes it just not clear the interval..



Not sure how to explain the issue but my goal here is to control the node server from the front-end (I am using react so also JS), the backend needs to run indefinitely, so maybe it because that heroku things sleeps, but I am getting errors even before the 30min, on the app the user can run and stop the function with a click of button, what happens is some users are connected somewhere else and not sure what actually make that bug happen.



Let me know if you wish more additional info, the code below is for the sake of simplicity, the real function take a website screenshot, upload the image for imgur and then update a firebase database, everything is async without callbacks.



const express = require('express')
const app = express()
const port = 1403

let timers = ;

app.get('/api/v1/:user/', (request, response) =>

var user = request.params.user;

if (request.query.running === 'false')
clearInterval(timers[user]);
console.log("Thread stopped for "
+ user);
else
console.log("Thread started for "
+ user);
timers[user] = setInterval(
function apiCall()
console.log("api called - thread running for "
+ user);
, 5000);

response.sendStatus(200);
)

app.listen(port, () => console.log(`App running on port $port!`))









share|improve this question
























  • "Child processes can be spawned by using our child_process.fork() API" -nodejs.org/en/about

    – Ron Royston
    Mar 27 at 1:57


















0















I have this app that I deployed to heroku, the user id is sent with the api requests but it's just not working as I wish, on first tries it does the job and the function stop for the right user however when testing it with some hardcore settings like changing the browser, ip address, device, ect.. I got random results. The app crash, sometimes it just not clear the interval..



Not sure how to explain the issue but my goal here is to control the node server from the front-end (I am using react so also JS), the backend needs to run indefinitely, so maybe it because that heroku things sleeps, but I am getting errors even before the 30min, on the app the user can run and stop the function with a click of button, what happens is some users are connected somewhere else and not sure what actually make that bug happen.



Let me know if you wish more additional info, the code below is for the sake of simplicity, the real function take a website screenshot, upload the image for imgur and then update a firebase database, everything is async without callbacks.



const express = require('express')
const app = express()
const port = 1403

let timers = ;

app.get('/api/v1/:user/', (request, response) =>

var user = request.params.user;

if (request.query.running === 'false')
clearInterval(timers[user]);
console.log("Thread stopped for "
+ user);
else
console.log("Thread started for "
+ user);
timers[user] = setInterval(
function apiCall()
console.log("api called - thread running for "
+ user);
, 5000);

response.sendStatus(200);
)

app.listen(port, () => console.log(`App running on port $port!`))









share|improve this question
























  • "Child processes can be spawned by using our child_process.fork() API" -nodejs.org/en/about

    – Ron Royston
    Mar 27 at 1:57














0












0








0








I have this app that I deployed to heroku, the user id is sent with the api requests but it's just not working as I wish, on first tries it does the job and the function stop for the right user however when testing it with some hardcore settings like changing the browser, ip address, device, ect.. I got random results. The app crash, sometimes it just not clear the interval..



Not sure how to explain the issue but my goal here is to control the node server from the front-end (I am using react so also JS), the backend needs to run indefinitely, so maybe it because that heroku things sleeps, but I am getting errors even before the 30min, on the app the user can run and stop the function with a click of button, what happens is some users are connected somewhere else and not sure what actually make that bug happen.



Let me know if you wish more additional info, the code below is for the sake of simplicity, the real function take a website screenshot, upload the image for imgur and then update a firebase database, everything is async without callbacks.



const express = require('express')
const app = express()
const port = 1403

let timers = ;

app.get('/api/v1/:user/', (request, response) =>

var user = request.params.user;

if (request.query.running === 'false')
clearInterval(timers[user]);
console.log("Thread stopped for "
+ user);
else
console.log("Thread started for "
+ user);
timers[user] = setInterval(
function apiCall()
console.log("api called - thread running for "
+ user);
, 5000);

response.sendStatus(200);
)

app.listen(port, () => console.log(`App running on port $port!`))









share|improve this question














I have this app that I deployed to heroku, the user id is sent with the api requests but it's just not working as I wish, on first tries it does the job and the function stop for the right user however when testing it with some hardcore settings like changing the browser, ip address, device, ect.. I got random results. The app crash, sometimes it just not clear the interval..



Not sure how to explain the issue but my goal here is to control the node server from the front-end (I am using react so also JS), the backend needs to run indefinitely, so maybe it because that heroku things sleeps, but I am getting errors even before the 30min, on the app the user can run and stop the function with a click of button, what happens is some users are connected somewhere else and not sure what actually make that bug happen.



Let me know if you wish more additional info, the code below is for the sake of simplicity, the real function take a website screenshot, upload the image for imgur and then update a firebase database, everything is async without callbacks.



const express = require('express')
const app = express()
const port = 1403

let timers = ;

app.get('/api/v1/:user/', (request, response) =>

var user = request.params.user;

if (request.query.running === 'false')
clearInterval(timers[user]);
console.log("Thread stopped for "
+ user);
else
console.log("Thread started for "
+ user);
timers[user] = setInterval(
function apiCall()
console.log("api called - thread running for "
+ user);
, 5000);

response.sendStatus(200);
)

app.listen(port, () => console.log(`App running on port $port!`))






javascript node.js






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Mar 27 at 1:21







user7319004






















  • "Child processes can be spawned by using our child_process.fork() API" -nodejs.org/en/about

    – Ron Royston
    Mar 27 at 1:57


















  • "Child processes can be spawned by using our child_process.fork() API" -nodejs.org/en/about

    – Ron Royston
    Mar 27 at 1:57

















"Child processes can be spawned by using our child_process.fork() API" -nodejs.org/en/about

– Ron Royston
Mar 27 at 1:57






"Child processes can be spawned by using our child_process.fork() API" -nodejs.org/en/about

– Ron Royston
Mar 27 at 1:57













0






active

oldest

votes










Your Answer






StackExchange.ifUsing("editor", function ()
StackExchange.using("externalEditor", function ()
StackExchange.using("snippets", function ()
StackExchange.snippets.init();
);
);
, "code-snippets");

StackExchange.ready(function()
var channelOptions =
tags: "".split(" "),
id: "1"
;
initTagRenderer("".split(" "), "".split(" "), channelOptions);

StackExchange.using("externalEditor", function()
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled)
StackExchange.using("snippets", function()
createEditor();
);

else
createEditor();

);

function createEditor()
StackExchange.prepareEditor(
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader:
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
,
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
);



);













draft saved

draft discarded


















StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f55368431%2fseparate-thread-for-each-user-using-node-js%23new-answer', 'question_page');

);

Post as a guest















Required, but never shown
























0






active

oldest

votes








0






active

oldest

votes









active

oldest

votes






active

oldest

votes




Is this question similar to what you get asked at work? Learn more about asking and sharing private information with your coworkers using Stack Overflow for Teams.







Is this question similar to what you get asked at work? Learn more about asking and sharing private information with your coworkers using Stack Overflow for Teams.



















draft saved

draft discarded
















































Thanks for contributing an answer to Stack Overflow!


  • Please be sure to answer the question. Provide details and share your research!

But avoid


  • Asking for help, clarification, or responding to other answers.

  • Making statements based on opinion; back them up with references or personal experience.

To learn more, see our tips on writing great answers.




draft saved


draft discarded














StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f55368431%2fseparate-thread-for-each-user-using-node-js%23new-answer', 'question_page');

);

Post as a guest















Required, but never shown





















































Required, but never shown














Required, but never shown












Required, but never shown







Required, but never shown

































Required, but never shown














Required, but never shown












Required, but never shown







Required, but never shown







Popular posts from this blog

Kamusi Yaliyomo Aina za kamusi | Muundo wa kamusi | Faida za kamusi | Dhima ya picha katika kamusi | Marejeo | Tazama pia | Viungo vya nje | UrambazajiKuhusu kamusiGo-SwahiliWiki-KamusiKamusi ya Kiswahili na Kiingerezakuihariri na kuongeza habari

Swift 4 - func physicsWorld not invoked on collision? The Next CEO of Stack OverflowHow to call Objective-C code from Swift#ifdef replacement in the Swift language@selector() in Swift?#pragma mark in Swift?Swift for loop: for index, element in array?dispatch_after - GCD in Swift?Swift Beta performance: sorting arraysSplit a String into an array in Swift?The use of Swift 3 @objc inference in Swift 4 mode is deprecated?How to optimize UITableViewCell, because my UITableView lags

Access current req object everywhere in Node.js ExpressWhy are global variables considered bad practice? (node.js)Using req & res across functionsHow do I get the path to the current script with Node.js?What is Node.js' Connect, Express and “middleware”?Node.js w/ express error handling in callbackHow to access the GET parameters after “?” in Express?Modify Node.js req object parametersAccess “app” variable inside of ExpressJS/ConnectJS middleware?Node.js Express app - request objectAngular Http Module considered middleware?Session variables in ExpressJSAdd properties to the req object in expressjs with Typescript