Skip to main content

Scheduled Tasks for Web Applications

Scheduled Tasks for Web Applications

Hosted web applications also sometimes need some processing activities which needs to be run periodically at defined time intervals without any user intervention. But Http being stateless in nature, there can not be persistent processes running on the webserver. For example, you can have some thread in ASP.NET which keeps ticking a non-stop timer.

Fortunately, there are a lot of options or workarounds available to address this gap.

  1. Windows Scheduled Task or a NT service to be installed which keeps ticking and then invokes appropriate methods in the web application.
  2. Commercial components like the ones described in DnZone website.
  3. The points (1) and (2) however requires, desktop access and privileges on the webserver. If our hosting account is shared, then most probably, our web host might not allow to run scheduled tasks on the webserver. There is some good news for those underprivileged as well.

    Hosted Scheduler Services
    1. Web Service Scheduler
    2. Web Cron
    3. HostedCron

Comments

Popular posts from this blog

Google NCR

Google NCRMost of you would be knowing about this trick in navigating to Google generic website. But I just came to know only a few days before and hence thought I would share the information with others too.
Whenever you type http://www.google.com/, Google automatically tries to redirect you to your country-specific website. For me, it always redirects to http://www.google.co.in/ (Google India). But when we specifically want to navigate to Google Generic website for some reason, there are two ways to accomplish the same.Click the 'Go to Google.com' link at the bottom of the webpage that is displayed from http://www.google.co.in/To prevent this redundant click, you can opt to type http://www.google.com/ncr/ which would prevent the redirect from happening. The NCR stands for No Country Redirect. There is a brief discussion about this NCR over this forum.You may also like to check out Google help documentation regarding the country redirections from here.

Elegant 'MailTo' Replacement

Elegant 'MailTo' Replacement

MailTo tags have become a bane to all websites since spammers run spam robots which crawl the web to capture the email addresses, add to their catalogs and send spams to them. I just thought of sharing with others a simple JavaScript function which would trigger open the default email client instead of having mailto: embedded in the HTML Page.

Just have the following function included in your webpage

<script language='Javascript'>
function WriteMailTo(user,domain)
{
location.replace ('mailto:'+user+'@'+domain);
}
</script>

And whereever you want to invoke the mailto, just called WriteMailTo('user','example.com') and the user's default email client should be launching (if configured) without any hassles.

Contacts import utility from Web2Project to Addressbook

I have been using Web2Project for planning my personal and professional tasks for a few years now. Now I have bifurcated the tools into the following:

Project PierAddress Book The only issue I had was to import my addressbook from Web2Project to AB. PP is a different animal. It does not serve as a comprehensive candidate for addressbook and hence I needed this bifurcation. 
I wrote up a following simple script to import the contacts to AB. The pre-requisite for this script is to hop on to PhpMyAdmin, export the contacts as a PHP array and then  modify the path in our import script to whatever you downloaded from PhpMyAdmin.
Our import script would explode the entries as SQL scripts into the browser window. Copy them and execute into PhpMyAdmin AB database to have the contacts imported.

Script URL: https://gist.github.com/lavanyadeepak/5177500#file-import-php