Knowing some of the FC people first hand, MongoDB did actually serve them fairly well for a substantial amount of time. Until they started hitting max limits, it didn't really make sense to move to c.
Going straight to C or something like it would have been almost cargo-cultish ( eg If we build industrial strength, we will get industrial levels of traffic ).
Going straight to C or something like it would have been almost cargo-cultish ( eg If we build industrial strength, we will get industrial levels of traffic ).