Skip to main content

Easy Way Running Background Tasks in ASP.NET

I found that Easy Way Running  Background Tasks in ASP.NET , Occasionally, there might be some activity in your web application that should trigger the need for some code to execute at a later date. One of the most common cases is sending an email (reminder, change digest, feedbacks etc), but there are other many uses too. You might want to defer some processing intensive activity to off hours. In my most recent case, I needed to check for changes to an purchased/installed application’s db and replicate them to another product every 5 to 10 minutes or so.
I’ve solved similar problems before by:
  1. From the web application, inserting a row in a ‘scheduled tasks’ database with a time to execute and a script url to run
  2. Creating an running a windows service somewhere that wakes up every 10 minutes or so, looks at the table for ‘due’ items, and opens a request to the url
This works, but it has some drawbacks.
  • You have to learn how to build and deploy a service.  Not particularly hard, but something a web developer doesn’t really need to know
  • You have to copy or figure out how to share some data access logic between the service and the web application, and maintain changes
  • You have to figure out where to deploy the service
  • You have to have somewhere to deploy the service – if you are using a shared webhost with no RDP you are out of luck
  • It’s hard to be sure the service is running.  It’s easy to forget about if your infrastructure changes.
  • You need to deal with it when the service errors.
  • You have to be careful that the service doesn’t run the same script twice (or make it so it doesn’t hurt anything if it does),in case it gets run on two machines,etc.
  • Many more tiny, but real headaches for dealing with and maintaining a separate but connected project
I really didn’t want to go through all of that again for yet another project.  There had to be a simpler solution.
Thanks to Google, I found this article that led me to use a Cache object expiration to simulate the service.  It’s a hack, but it solved my issue.

Later, I found this StackOverflow post about the same issue/fix.

More Info :

http://www.foliotek.com/devblog/running-a-scheduled-task/

 
Labels:

Comments

Post a Comment

Popular posts from this blog

How to hide url parameters in asp.net

There are different ways to Hide the URL in asp.net , you can choose any one from bellow options . Previously I was Explained about the  Difference between Convert.tostring and .tostring() method Example  ,   Reasons to use Twitter Bootstrap , How to Register AJAX toolkit in web.config file in asp.net a) Using Post Method b) Using Of Session . c) URL Encoding & decoding process . d) Using Server.Transfer() instead of Response.Redirect() method (1)Use a form and POST the information. This might require additional code in source pages, but should not require logic changes in the target pages (merely change Request.QueryString to Request.Form). While POST is not impossible to muck with, it's certainly less appealing than playing with QueryString parameters. (2)Use session variables to carry information from page to page. This is likely a more substantial effort compared to (1), because you will need to take session variable checking into account...
Post a Comment
Read more

12 Sentences that Change Your Attitude at Work

If you work with the right attitude and right way, you’ll have your productivity up another level, and eventually, success will be just a step away. These are the 12 encouraging sentences that could change your attitude at work. #1 Don’t work harder, work deeper. #2 When you are young, work to learn, not to earn. #3 If you work really hard and are kind, amazing things will happen. #4 Productivity is never an accident. It is always the result of commitment to excellence, intelligent planning, and focused effort. #5 Most people work just hard enough not to get fired and get paid just enough money not to quit. #6 Boost your productivity by taking action immediately after setting a target even without perfect plans. Adjust your course along the way. #7 To be successful, the first thing to do is to fall in love with your work. #8 Identify your peak hour of productivity. Schedule your most important task for this period. Work on unimportant tasks during non-peak hours. #9 Be a mo...
Post a Comment
Read more

Asp.Net AjaxFileUpload Control With Drag Drop And Progress Bar

This Example explains how to use AjaxFileUpload Control With Drag Drop And Progress Bar Functionality In Asp.Net 2.0 3.5 4.0 C# And VB.NET. Previous Post  I was Explained about the   jQuery - Allow Alphanumeric (Alphabets & Numbers) Characters in Textbox using JavaScript  ,  Fileupload show selected file in label when file selected  ,  Check for file size with JavaScript before uploading  . May 2012 release of AjaxControlToolkit includes a new AjaxFileUpload Control  which supports Multiple File Upload, Progress Bar and Drag And Drop functionality. These new features are supported by Google Chrome version 16+, Firefox 8+ , Safari 5+ and Internet explorer 10 + , IE9 or earlier does not support this feature. To start with it, download and put latest AjaxControlToolkit.dll in Bin folder of application, Place ToolkitScriptManager  and AjaxFileUpload on the page. HTML SOURCE < asp:ToolkitScriptManager I...
3 comments
Read more