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I have a website which have more than 1000 users. I want to update the content of my site in every 10 sec.
Suppose if one user update anything in a table so it will reflect to other logged in user. But remember the user is ideal.
He doesn't press refresh on his browser.
I think of applying auto-refresh in every 10 sec through jquery which call the ajax post and gets back the
updated result. But with my approach if 1000 users are online so my server will be hit by 1000 times. I want some optimized way to do this. Any suggestions
Setup ajax push instead:
have the browser invoke a remote function on load.
Then on the server wait for an event (new information to send out) then return it to the browsers. This may be easiest with node.js.
You will have to handle connections dropping depending on the reliability you want to implement.
Here's a discussion of Ajax push with php:
Ajax push system
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How do I best handle when a user pushing back to a page that is cached with items in a ASP.NET app?
Could I handle the cache with by capturing it in the back buttons event?
There are multiple ways to perform state management in ASP.NET on page navigation. You can use client side state management techniques such as View state , cookies and query string based on your requirement and amount of data you are going to cache.
Please refer below link for complete understanding of caching.
ASP-NET-State-Management
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user should sign off automatically after few minute, like 20-30 minute? and get back to the login page, even if they doing something on website, i'm using mvc5.
can IIS overwrite our web.config's session timeout changes ?
Identity server provides you with everything you need to handle session length and a variety of other features to suit your needs. Take a look at the following guide that will get you started in understanding identity server.
The timeout of each user gets checked against the identity server security store and you can renew / revoke access tokens as needed.
Getting started with identity server 4
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I display some of the data i.e. Sum, Average and Total on a page and want to update them after the data changed using SignalR. Most of the examples uses the following approach that broadcast all of the clients after create / update / delete methods (that change data) are executed:
private void BroadcastDataChange(Data data)
{
Clients.All.dataChanged();
}
However, I am wondering if there is a smarter approach that let me update the data i.e. periodically refreshing without broadcast in each of the create-update-delete methods (I do not use SqlDependency, etc, juts using SignalR). On the other hand, I am not sure this kind of approach is contradictory to the SignalR logic. This is the first time I use SİgnalR and I am too confused :( Any help would be appreciated.
You can use polling with SignalR. It's just an inefficient way of doing things though, because: (1) there would be a delay between when changes happen and when they are broadcast to clients. (2) broadcasts would happen even if data didn't change, which is a waste of resources.
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I have an asp.net c# website which members complete a form which is stored in sql server. After 24 hrs, I would like to send a notification to a specific group of users if the form status has NOT changed. Is this achievable from within asp.net?? Any help is appreciated
I have done it several times and there are many ways to do it. One simple way is to check every X minutes if you need to send any notifications. If so, you send them.
For example: every 60 minutes you check if there are any forms that have been on the same status for 24hs. If so, you send a notification.
If you have full control of the server, I would recommend you to create a Windows Service to perform this job. ASP.NET was not built for long running tasks so that's why I'm suggesting to create a Windows Service.
One more thing, create a log table for this task so every time you send a notification, you add a row on that table. That's gonna help you debug any issues you might have. Also, remember to mark the rows where you have already notified the customer to avoid sending a notification twice. I always like to add a double check before sending the notification.
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I had made a site for client in which users can make request for songs, there's a database having songname, by whom, written by, sang at etc. The site is hosted and working fine.
The way the admin gets to know what is asked for is by using the website but now he wants that there be a desktop application which displays all the requests so he does not have to log in and use the website
I do have an idea to get this done, but I am hoping for a well known established way. I am using C# asp.net.
I think you can create an Http Handler. This handler will listen to the request and you can log them in a database, and the windows application will read from the database.
You can simply use Timer in windows application.
Set your Timer to either 1 min or 2 min as per your need.and on its Tick event you check the live database whether is there any new request come or not..
If new request come then you can show some notification or something like this...