[This message was posted by Guangbin Xu of SSE <[email protected]> to the 
"FAST Protocol" discussion forum at http://fixprotocol.org/discuss/46. You can 
reply to it on-line at http://fixprotocol.org/discuss/read/93f260e7 - PLEASE DO 
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According to my personal experience, FAST is not necessarily better than zlib 
in terms of compression ratio. In fact those two are very close. You can even 
apply FAST/zlib if the time overhead is tolerable for application. However, 
FAST is more suitable for context-based streaming process because the 
granularity of which is message-by-message or record-by-record, instead of 
handling data in a batch process way. 



> Hi all,
> 
> I'm considering to compress market data messages using zlib.
> 
> I found some discussions in this forum regarding zlib v.s. FAST. From 
> performance point of view, FAST is a better choice. But FAST seems to be more 
> complex in implementation.
> 
> I'd like to know if zlib is considered a valid implemetation for the market 
> data compression?  Is it used by anybody in production?
> 
> Thanks & Regards,
> LiuAn


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