There's a theoretical limit of two billion documents that Alkaline can index. Still, Alkaline
is not designed for indexing that amount of data. We recommend to use Alkaline with something
around 50'000-500'000 pages and 250'000 word forms, even though Alkaline will work for much
bigger sites in case you add consequent hardware.
Alkaline has been successfully deployed with half a million indexed pages on a single server using
a very accurate words exclusion dictionary.
A parallel version of Alkaline will of course easily break that limit, there's no ETA for that.
