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iphoneapache-flexjsonactionscriptamf

use AMF instead of JSON on iPhone? (for web services)

Although iPhone support JSON natively, AMF is a binary protocol and it supposes to use much less bandwidth. Do you think using AMF is a good idea?

Just found this AMF library in cocoa (Objective-C): http://github.com/nesium/cocoa-amf/

Here's the famous benchmark that shows AMF is smaller and faster than JSON + gzip in Flex: http://www.jamesward.com/census/

Solution

  • Gym said :

    The above examples were in AMF0, but I don't think AMF3 would be much different.

    This is SO untrue. AMF3 can result in data as much as 5 to 8 times less than AMF / JSON. AMF3 achieves this by referencing every single item that has been used once. Not only strings. Any object, including keys, is referenced (with an offset) as soon as it has been used once.

    On large datasets, it makes a huge difference.