5 Mar 2012 5:31 AM #1
Unanswered: Making some part of data offline and how tho synchronize the with server
my application gets many data from server such as:
categories, available cities, available zip codes ( which are very rarely changed!)
doctor information (which depends on user geo location and changes often)
To make the application performance better I want to save the rarely changed data offline in localstorage. On the other hand I must detect in any way that my localstorage is not uptodate and if this is the case I must update them.
Question is: How can I detect that localstorage data is not uptodate and there is a need to synchronize them again with server.
This is a standart problem for applications with server - client communication so I hope there exist a standard solution pattern for it.
Thanks a lot for any hint.
5 Mar 2012 6:28 AM #2
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- Mar 2007
- Gainesville, FL
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I have timestamps of last data update and save it along with the localstorage data. I would then do an Ajax call to see if a newer timestamp is available, if it is then I get data and save it to localstorage store and update.Mitchell Simoens @SenchaMitch
Sencha Inc, Senior Software Engineer
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5 Mar 2012 6:29 AM #3
Do you have a code fragment for this?