Cache the jsonencoder instance we need inside of riak.backend
Cache the jsonencoder instance we need inside of riak.backend

This gives us a performance boost because a new instance of JSONEncoder
is created on each call otherwise. Internally to simplejson, it
maintains a _default_encoder that it'll reuse if you pass no kwargs.
Otherwise, it'll create a new one each time, so we wanna bypass that and
just explicitly use our own since the kwargs will never change.

gencer/sentry,BuildingLink/sentry,ifduyue/sentry,ifduyue/sentry,mvaled/sentry,mvaled/sentry,BuildingLink/sentry,BuildingLink/sentry,beeftornado/sentry,fotinakis/sentry,looker/sentry,looker/sentry,BuildingLink/sentry,jean/sentry,mvaled/sentry,jean/sentry,fotinakis/sentry,looker/sentry,JamesMura/sentry,ifduyue/sentry,gencer/sentry,JackDanger/sentry,JackDanger/sentry,alexm92/sentry,mitsuhiko/sentry,jean/sentry,beeftornado/sentry,ifduyue/sentry,mvaled/sentry,zenefits/sentry,alexm92/sentry,looker/sentry,JamesMura/sentry,looker/sentry,mvaled/sentry,beeftornado/sentry,zenefits/sentry,zenefits/sentry,gencer/sentry,JamesMura/sentry,JamesMura/sentry,mvaled/sentry,fotinakis/sentry,mitsuhiko/sentry,JamesMura/sentry,jean/sentry,jean/sentry,fotinakis/sentry,zenefits/sentry,JackDanger/sentry,gencer/sentry,BuildingLink/sentry,ifduyue/sentry,alexm92/sentry,zenefits/sentry,gencer/sentry