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GavinW_29074's avatar
GavinW_29074
Icon for Nimbostratus rankNimbostratus
Dec 30, 2011

Possible to inject a 'Loading icon' for certain pages?

Hi there,

 

 

We've recently hit a scenario whereby a lot of our application reports are taking a long time to render.

 

 

Ideally, I dont want any user to be sat with a blank page for more than 10-15 seconds, which for the rest of the application is perfectly do-able... Any more than that and the F5 returns a 'sorry, something's gone wrong page'...

 

 

However for reports we know that they're likely to take more than 10-15 seconds... Ideally, I'd get the developers to rewrite the app such that it returns a 'loading icon' when running the reports... However they've indicated that that's likely to take a few months to come to fruition...

 

 

So I thought to myself, what if I could use an iRule to inject the relevant code and images, and then reload the page when the server responds...

 

 

Before I start down this path, does this sound feasible? Anybody done anything similar that I can use for a starter?

 

 

Cheers in advance for any replies.

 

Gavin

 

application delivery
dev
devops
iRules
  • The_Bhattman's avatar
    The_Bhattman
    Icon for Nimbostratus rankNimbostratus
    Dec 30, 2011
    Hi Gavin,

     

    I went down this road 3 years ago and we came to several conclusions before any attempt made to write one piece of irule code:

     

     

     

    1) Lines between app and F5 support are blurred

     

    2) App owners would take even longer to write up a fix because a "workaround" would be in place with no incentive to resolve

     

    3) The Application would need to be already written to respond to the F5 in a manner which can be used to work with a status page

     

     

    Again this is what we came up with, but I thought of offering some insight as to how it was handled within my company

     

     

    Bhattman
  • hwidjaja_37598's avatar
    hwidjaja_37598
    Icon for Altostratus rankAltostratus
    Dec 31, 2011
    It seems to me that it's feasible but it depends on how the application is designed and written.

     

     

    One scenario is to inject a div with loading page and to load the report to another hidden div. Once it's loaded, you remove the div with loading page and show the main page.