Polling, or polled operation, in computer science, refers to actively sampling the status of an external device by a client program as a synchronous activity. Polling is most often used in terms of input/output (I/O), and is also referred to as polled I/O or software-driven I/O. From [Wikipedia on ...

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Polling vs events pros and cons in JavaScript

I'm bit of a novice to JavaScript so I've been wondering on positive and negative sides of using polling compared to using events in JavaScript? When does one use one or the other? By polling I ...
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125 views

Managing child worker thread list

After so much research, I thought I should ask the experts. I am working on a project for my corporate employer, we have android and iPhone mobile apps that make request to a web service, the request ...
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258 views

Push vs Poll when large delay (hours) is acceptable

It seems commonsense nowadays that polling is a bad practice and pushing is the way to go when developing mobile applications that require to constantly receive data from a remote server. All major ...
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Are there algorithims for polling optimization?

I have a web-application with an async HTTP backend, which gets called by the client by AJAX requests. The client has to start a job and then polls for the result. I started with a simple 150ms ...
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198 views

Best approach for near real time message passing from server to client across router?

I am developing an application which must run on up to thousands of client systems that I control (Linux) which are connected behind common NAT devices to public Internet. Each of these client ...
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310 views

What term is used to describe running frequent batch jobs to emulate near real time

Suppose users of application A want to see the data updated by application B as frequently as possible. Unfortunately app A or app B cannot use message queues, and they cannot share a database. So ...
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390 views

Scalable solution for website polling

I'm looking to add push notifications to one of my iOS apps. The app is a client for a website which doesn't offer push notifications. What I've come up with so far: App sends a message to home ...
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421 views

Design For Asynchronous User Interface

I have been working on a integration that has posed an interesting user interface conundrum that I would like suggestions for. The user interface is displayed within a third party product. The state ...