possible bottlenecks:
- bandwidth between db and application
- bandwidth between app and client
- both of them
- memory consumtion in the app may force excessive swapping

you're saying rows, but use MongoDB which is document based. do you mean 
documents?

possible solutions:
- use streaming where possible
- use paging where no streaming supported
- reduce data fetched. MongoDB support the limitation of fields 

Disclaimer: all of this are guesses without knowledge about the 
infrastructure and code.

Am Freitag, 27. September 2013 11:31:54 UTC+2 schrieb Luke Han:
>
> Hi Experts.
>     We are building a data feed rest service with node.js and 
> MongoDB/Express. The server perform very well if the query result is small. 
> But it will hang the server when the client query a large dataset, such as 
> 1m rows (already using gzip to compression). Is this caused by node.js 
> single thread design? 
>     I would like to consulting you about any idea to handle this. 
>     Any comments are welcome:)
>     Thank you very much.
>
> Luke
>

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