For Working offline - Which one to use - local database caching or reliable messaging?

Hi,
I am working on a mobile application with lcds where there is a feature to be implemented. The user can use the application in airplane mode and be able to automatically send requests to server when he comes online. After some research, I found that I have to use a feature in the documentation called ocasionally conencted clients, which uses local database with dataservice.savecache() and offline adapter. I also found another feature called reliable messaging which takes care of sending the pending requests when the user comes online, but not sure if this feature supports offline mode for longer periods. The documentation mentioned that reliable messaging is only good for transient network disconnects, meaning disconenction for shorter time.
Can anybody please confirm which is the right feature that best suits this requirement?
Thanks,
Swathi.

Hi Ashish,
Thank you so much for the resource. One more question, The code in the resource link, has calls to Dataservice.disconnect() and Dataservice.connect() on the buttons. If my user need not bother to click on those buttons for connections and just set his phone to airplane mode and start working, I am using SocketMonitor class to monitor for network connection and then perform the Dataservice.connect(). In that case, I have problems when network is connected, the data service seems connected automatically some times and not connected other times resulting in errors. I am using autoConenct = true. How can I handle this? Do I have to call disconnect when socket is not available and then call conenct when it is available, things like that? Or Is there any other way to implement this without using SocketMonitor class?
Thanks,
Swathi.

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