title: Zen description: Various topics by Oleg Bartunov. link: http://www.sai.msu.su/~megera/wiki/relation_featur%E5s/DB/GiST/GiST_internals/spgist_dev/CAS/CASCurrentServices/SAI_RVO/Blog/2009-11-25/CAS/Global_service_design/spgist_dev/SOA/CAS generator: Oddmuse