This project works on top of great work by borisovs (https://github.com/borisovs/pool) which directly use libpq's API via libpq-fe.h but
now this project call APIs through libpqxx.
The implementation focuses on having connection pool which its number of available connection is set via POOL_SIZE in PGPool.h file. In main.cpp, it simulates creating a new 10 threads holding of each available connection from the pool to execute DB related task. Ideally, the concurrency model at this point is up to your app implementation. See more detail for possible ways at http://pqxx.org/development/libpqxx/wiki/Threading .
Create a database namely demo first by log in to your postgres console, and execute create database demo.
Then execute SQL statements from provided file (pool.sql) to insert necessary tables into such database as follows
psql -U postgres demo < pool.sql
Then compile, link and make executable file via the following
make
It will produce an executable called pool at the same directory.
Finally run with
PGDATABASE=demo PGUSER=postgres PGPASSWORD="...your password if any..." ./pool
MIT, Abzi.co