On Wed, May 17, 2017 at 8:08 AM, Zenaan Harkness <[1]zen@freedbms.net>
   wrote:

     "Formal" library software (e.g. Evergreen) may be the answer for
     repo
     wide searchability of meta data, but when others share interest,
     they
     may only be able to store, and or may be only particularly
     interested
     in a sub-category or two such as health and agriculture/gardening,
     so
     it might be best anyway to use a handful of top level "general
     categories" to reduce our maximums down from 50K books per dir, to
     10
     fold fewer at least.

   I guess your best bet would probably be to approach it like a physical
   library does.
   Divide by broad category/genre (so separate fiction and non-fiction,
   subdivide that into health etc)
   Then divide further by Author's name, perhaps dividing that further by
   the first two chars of the author's name
   But it'd get complicated quite quickly (particularly if you don't know
   the author's name) so you'd want some sort of
   index available to do metadata based searching too. I think that's
   probably going to be hard to avoid with a
   substantial number of books though.
   --
   Ben Tasker
   [2]https://www.bentasker.co.uk

References

   1. mailto:zen@freedbms.net
   2. https://www.bentasker.co.uk/