php - Locking in MongoDB for a Pintrest like website -


one of our client projects pinterest website. made mysql , codeigniter time back. have gotten funding , lot more traffic. rebuilding website , considering mongodb seems 1 of more mature nosql db big user base.

i know there concerns global locking till version 2.2 post taken care of.

this first project mongodb , nosql. have question :

  • is write lock still should worrying about?

my research in few other places indicated isn't such bad thing sounds like.

video 10gen talking global lock : http://www.youtube.com/watch?v=piwvfutbv1q ( skip 55:00 global lock question )

current version of mongodb : 2.4 -- global lock removal happened in 2.2 details: http://blog.serverdensity.com/goodbye-global-lock-mongodb-2-0-vs-2-2/

from watching couple of other videos on it, following statements sum current understanding of issue :
"10gen rep : global lock serious about. server wide lock gone, database level lock , in future plan make collection level.. "

"if record trying update in ram, not notice update because fast. sounds scary but, shouldn't face many issues because of this"


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