Created a wiki page for performance case studies

Hello,

We, the PostgreSQL Enterprise Consortium in Japan, would like to propose ga=
thering real-world user cases showing the potential of PostgreSQL performan=
ce in order to promote the use of PostgreSQL.  We've created the initial wi=
ki page:

Performance Case Study
https://wiki.postgresql.org/wiki/Performance_Case_Study

You can reach here in the PostgreSQL Wiki by going through the links "Gener=
al articles and guides" -> "Performance Case Study."

We hope you will find this useful and add more appealing example cases.

[Citation from the page above]
This page showcases real-world user examples that demonstrate the performan=
ce of PostgreSQL.  The page is here to answer vague questions from users co=
nsidering adoption of PostgreSQL, such as "What performance can PostgreSQL =
offer?", "What size of database can PostgreSQL handle?", and "Is PostgreSQL=
 used in business critical systems (in a particular industry)?"  This page =
was created by PostgreSQL Enterprise Consortium (PGECons) [1], a Japanese o=
rganization founded to promote use of PostgreSQL in enterprises.  Feel free=
 to add entries.


[1]
https://www.pgecons.org/en/about/


Regards
Takayuki Tsunakawa