On Wed, Apr 21, 2021 at 10:52:19AM +0200, Stefan Keller wrote: > Di., 20. Apr. 2021 23:50 Tom Lane <t...@sss.pgh.pa.us> wrote: > > There's enough support these days that you can build a new index > > type as an extension, without touching the core code at all. > > Thanks. I'm ramping up knowledge about extending PG with C++. > > I'm still interested to understand in principle what an index has to > do with concurrency control, in order to divide > concerns/reponsibilities of code.
The issue is that some index structures, like bitmap indexes, have very poor concurrent performance. This means that some indexes perform very well for a single user but poorly for multiple users. -- Bruce Momjian <br...@momjian.us> https://momjian.us EDB https://enterprisedb.com If only the physical world exists, free will is an illusion.
