问题
Assuming both XML plist and JSON are delivered over http, gzipped, which one will be processed faster on an iPhone?
回答1:
A co-worker and I did some rudimentary benchmarks recently to test which was faster for an application we were writing. We tested this JSON framework, and the NSXML parser as well as a TreeNode parser we found in an Objective-C book. Here is the note I sent to the other developers on our team:
The benchmark tested how each library handled getting the filename and path
of 100 assets, 100 times each (for a total count of 10,000 runs per library).
The results are below:
Method Average(s) Total(s)
TreeNode 0.307475 30.747493
NSXML 0.483778 48.377843
JSON 0.233179 23.317870
回答2:
JSON beats plists according to this: http://samsoff.es/posts/web-services-with-cocoa-surprise
回答3:
It depends on the data that is delivered and the way it is parsed, but they should both be similar in speed. You should just choose the one that is easier for you to develop a parser and then fine tune the parser.
回答4:
In the "Building a Server-Driven User Experience" session of WwDC, an Apple developer stated that PLIST was preferred for being faster and easier to use.
来源：https://stackoverflow.com/questions/3518215/whats-faster-on-iphone-xml-plist-or-json