Yup, simplejson is much faster than the standard json. JSON 3.56521892548 Simple... | Hacker News

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sigil on Jan 27, 2011 | parent | context | favorite | on: Greplin (YC W10) open sources 10-15x faster protoc...

Yup, simplejson is much faster than the standard json.

  JSON
  3.56521892548
  SimpleJSON 
  0.727998971939
  Protocol Buffer (fast)
  0.38397192955
  Protocol Buffer (standard)
  4.86640501022
  Protocol Buffer (lwpb)             
  0.323328971863
  cPickle    
  0.811990976334

indigoviolet on Jan 28, 2011 [–]

I think you'll find py-yajl to be faster than any of the other Python JSON modules: https://github.com/rtyler/py-yajl

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