Persistent connections

[Nibin V M]

Hello,

I have been reading docs and many are telling that persistent connections
are kept open indefinitely. But I found in PHP docs that it will not close
after script execution like requesting a page; so should it close after
the request is over?

So when exactly a persistent connection should close?

Please advice.

[Stuart Dallas]

Post by Nibin V M
I have been reading docs and many are telling that persistent connections
are kept open indefinitely. But I found in PHP docs that it will not close
after script execution like requesting a page; so should it close after
the request is over?
So when exactly a persistent connection should close?
Please advice.

A persistent connection is closed when the PHP process ends, or it gets disconnected by the server-side or due to a network error. Attempting to explicitly close a persistent connection will do nothing without complaining.

-Stuart

[Nibin V M]

Thank you for the quick response Stuart...one more doubt..at
http://php.net/manual/en/features.persistent-connections.php they states

=========
This means that when the same client makes a second request to the server,
it may be served by a different child process than the first time. When
opening a persistent connection, every following page requesting SQL
services can reuse the same established connection to the SQL server
=========

Is the persistent connection pool is re-used between apache child
processes ?

Post by Stuart Dallas

Post by Nibin V M
I have been reading docs and many are telling that persistent connections
are kept open indefinitely. But I found in PHP docs that it will not

close

Post by Nibin V M
after script execution like requesting a page; so should it close after
the request is over?
So when exactly a persistent connection should close?
Please advice.

A persistent connection is closed when the PHP process ends, or it gets
disconnected by the server-side or due to a network error. Attempting to
explicitly close a persistent connection will do nothing without
complaining.
-Stuart
--
Stuart Dallas
3ft9 Ltd
http://3ft9.com/

[Stuart Dallas]

Thank you for the quick response Stuart...one more doubt..at http://php.net/manual/en/features.persistent-connections.php they states
=========
This means that when the same client makes a second request to the server, it may be served by a different child process than the first time. When opening a persistent connection, every following page requesting SQL services can reuse the same established connection to the SQL server
=========
Is the persistent connection pool is re-used between apache child processes ?

No, connections are not shared between PHP processes. Nothing is shared between PHP processes.

-Stuart
--
Stuart Dallas
3ft9 Ltd
http://3ft9.com/

Post by Nibin V M
I have been reading docs and many are telling that persistent connections
are kept open indefinitely. But I found in PHP docs that it will not close
after script execution like requesting a page; so should it close after
the request is over?
So when exactly a persistent connection should close?
Please advice.

A persistent connection is closed when the PHP process ends, or it gets disconnected by the server-side or due to a network error. Attempting to explicitly close a persistent connection will do nothing without complaining.
-Stuart
--
Stuart Dallas
3ft9 Ltd
http://3ft9.com/
--
Regards....
Nibin.
http://TechsWare.in

[Nibin V M]

ok..thank you very much Stuart :)

Post by Nibin V M

Post by Nibin V M
Thank you for the quick response Stuart...one more doubt..at

http://php.net/manual/en/features.persistent-connections.php they states

Post by Nibin V M
=========
This means that when the same client makes a second request to the

server, it may be served by a different child process than the first time.
When opening a persistent connection, every following page requesting SQL
services can reuse the same established connection to the SQL server

Post by Nibin V M
=========
Is the persistent connection pool is re-used between apache child

processes ?
No, connections are not shared between PHP processes. Nothing is shared
between PHP processes.
-Stuart
--
Stuart Dallas
3ft9 Ltd
http://3ft9.com/

Post by Nibin V M

Post by Nibin V M
I have been reading docs and many are telling that persistent

connections

Post by Nibin V M

Post by Nibin V M
are kept open indefinitely. But I found in PHP docs that it will not

close

Post by Nibin V M

Post by Nibin V M
after script execution like requesting a page; so should it close

after

Post by Nibin V M

Post by Nibin V M
the request is over?
So when exactly a persistent connection should close?
Please advice.

A persistent connection is closed when the PHP process ends, or it gets

disconnected by the server-side or due to a network error. Attempting to
explicitly close a persistent connection will do nothing without
complaining.

Post by Nibin V M
-Stuart
--
Stuart Dallas
3ft9 Ltd
http://3ft9.com/
--
Regards....
Nibin.
http://TechsWare.in