if you wanted to see the queue you could do this: >>> [rec.connection for rec in e.pool._pool.queue] [<_mysql.connection open to 'localhost' at 0x55ac3f6dfd20>, <_mysql.connection open to 'localhost' at 0x55ac3f6f52f0>]
but for more general tracking of connection pool connections you would use the event listeners and track them yourself: https://docs.sqlalchemy.org/en/13/core/events.html#sqlalchemy.events.PoolEvents On Tue, May 5, 2020, at 12:49 PM, Mike Bayer wrote: > engine.pool has some metrics on it: > > >>> from sqlalchemy import create_engine > >>> e = create_engine("mysql://scott:tiger@localhost/test") > >>> e.pool.status() > 'Pool size: 5 Connections in pool: 0 Current Overflow: -5 Current Checked out > connections: 0' > >>> e.pool.checkedout() > 0 > >>> c1 = e.connect() > >>> e.pool.checkedout() > 1 > >>> e.pool.status() > 'Pool size: 5 Connections in pool: 0 Current Overflow: -4 Current Checked out > connections: 1' > >>> c2 = e.connect() > >>> e.pool.status() > 'Pool size: 5 Connections in pool: 0 Current Overflow: -3 Current Checked out > connections: 2' > >>> c1.close() > >>> e.pool.status() > 'Pool size: 5 Connections in pool: 1 Current Overflow: -3 Current Checked out > connections: 1' > >>> c2.close() > >>> e.pool.status() > 'Pool size: 5 Connections in pool: 2 Current Overflow: -3 Current Checked out > connections: 0' > > > > > On Tue, May 5, 2020, at 11:14 AM, Oğuzhan Kaya wrote: >> I made a connection with sqlalchemy to mssql and I used queue pool. I am >> trying to understand this connetion pool is worked or not. and also I want >> to see the connections and the queue inside connection pool how can I see? >> >> engine = sal.create_engine('IP',pool_size=1,max_overflow=0) >> result = engine.execute('select * from mytable') >> result.close() >> >> -- >> SQLAlchemy - >> The Python SQL Toolkit and Object Relational Mapper >> >> http://www.sqlalchemy.org/ >> >> To post example code, please provide an MCVE: Minimal, Complete, and >> Verifiable Example. See http://stackoverflow.com/help/mcve for a full >> description. >> --- >> You received this message because you are subscribed to the Google Groups >> "sqlalchemy" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to sqlalchemy+unsubscr...@googlegroups.com. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/sqlalchemy/d565c8a9-0d34-46cb-971a-b08ecc1fc881%40googlegroups.com >> >> <https://groups.google.com/d/msgid/sqlalchemy/d565c8a9-0d34-46cb-971a-b08ecc1fc881%40googlegroups.com?utm_medium=email&utm_source=footer>. > > > -- > SQLAlchemy - > The Python SQL Toolkit and Object Relational Mapper > > http://www.sqlalchemy.org/ > > To post example code, please provide an MCVE: Minimal, Complete, and > Verifiable Example. See http://stackoverflow.com/help/mcve for a full > description. > --- > You received this message because you are subscribed to the Google Groups > "sqlalchemy" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to sqlalchemy+unsubscr...@googlegroups.com. > To view this discussion on the web visit > https://groups.google.com/d/msgid/sqlalchemy/903c57b2-d918-42f7-9d9e-704a0b95fd15%40www.fastmail.com > > <https://groups.google.com/d/msgid/sqlalchemy/903c57b2-d918-42f7-9d9e-704a0b95fd15%40www.fastmail.com?utm_medium=email&utm_source=footer>. -- SQLAlchemy - The Python SQL Toolkit and Object Relational Mapper http://www.sqlalchemy.org/ To post example code, please provide an MCVE: Minimal, Complete, and Verifiable Example. See http://stackoverflow.com/help/mcve for a full description. --- You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To unsubscribe from this group and stop receiving emails from it, send an email to sqlalchemy+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sqlalchemy/3864b576-1748-48e1-a054-95f774e1e7de%40www.fastmail.com.
