Comments on: Are PHP persistent connections evil ? http://www.mysqlperformanceblog.com/2006/11/12/are-php-persistent-connections-evil/ Everything about MySQL Performance Sat, 21 Nov 2009 05:23:57 -0800 http://wordpress.org/?v=2.8.4 hourly 1 By: MySQL: блокировки и persistent connection « Oracle mechanics http://www.mysqlperformanceblog.com/2006/11/12/are-php-persistent-connections-evil/comment-page-1/#comment-591018 MySQL: блокировки и persistent connection « Oracle mechanics Sat, 20 Jun 2009 23:00:14 +0000 http://www.mysqlperformanceblog.com/2006/11/12/are-php-persistent-connections-evil/#comment-591018 [...] – см., например, обсуждение в блоге Peter Zaitsev Are PHP persistent connections evil ?. Для решения проблемы и учитывая, что в случае с MySQL [...] [...] – см., например, обсуждение в блоге Peter Zaitsev Are PHP persistent connections evil ?. Для решения проблемы и учитывая, что в случае с MySQL [...]

]]> By: oscar duron http://www.mysqlperformanceblog.com/2006/11/12/are-php-persistent-connections-evil/comment-page-1/#comment-503395 oscar duron Thu, 12 Mar 2009 10:36:49 +0000 http://www.mysqlperformanceblog.com/2006/11/12/are-php-persistent-connections-evil/#comment-503395 I you are only reading data, persistent connection is a good option if not the best. If you are updating data, think twice and undertand the risks and problems using a persistent connection. If you are using transactions, persistent connections do not apply. I you are only reading data, persistent connection is a good option if not the best. If you are updating data, think twice and undertand the risks and problems using a persistent connection. If you are using transactions, persistent connections do not apply.

]]> By: Michel Van Hof http://www.mysqlperformanceblog.com/2006/11/12/are-php-persistent-connections-evil/comment-page-1/#comment-503346 Michel Van Hof Thu, 12 Mar 2009 09:28:59 +0000 http://www.mysqlperformanceblog.com/2006/11/12/are-php-persistent-connections-evil/#comment-503346 Hi, I have a situation (although not with php) that has been troubeling me a long time now. I have a Server Application (in-house) which in turn let's a bunch of clients connect to it. These clients give feebdack.. A LOT of feedback, (think in terms of narrowcasting players which tell me what image they have played at what time and which screen.. such an image is displayed for 10 seconds and then goes to the next.. these are 8460 records per day per screen per player.. ). Next to this, they query data (are there new files, ads etc) and they log certain events.. Now i tryed doing this with the Mysql.NET connector and opening and closing the connection but up until now, i haven't got this working yet.. so for now, i'm using a concurrent connection per client that is connected to my server. Performance has never been fantastic though. So my question is: Per query connection of keep a concurrent connection per client that is connected ? Hi, I have a situation (although not with php) that has been troubeling me a long time now.

I have a Server Application (in-house) which in turn let’s a bunch of clients connect to it. These clients give feebdack.. A LOT of feedback, (think in terms of narrowcasting players which tell me what image they have played at what time and which screen.. such an image is displayed for 10 seconds and then goes to the next.. these are 8460 records per day per screen per player.. ). Next to this, they query data (are there new files, ads etc) and they log certain events..

Now i tryed doing this with the Mysql.NET connector and opening and closing the connection but up until now, i haven’t got this working yet.. so for now, i’m using a concurrent connection per client that is connected to my server. Performance has never been fantastic though.

So my question is: Per query connection of keep a concurrent connection per client that is connected ?

]]> By: oscar duron http://www.mysqlperformanceblog.com/2006/11/12/are-php-persistent-connections-evil/comment-page-1/#comment-379182 oscar duron Fri, 14 Nov 2008 20:41:37 +0000 http://www.mysqlperformanceblog.com/2006/11/12/are-php-persistent-connections-evil/#comment-379182 Please help! in PHP mySQL, the use of SELECT FOR UPDATE and SELECT LOCK IN SHARE MODE, How to use it? They don't make any sense to me in a web application, because when you first read the data (SELECT FOR UPDATE)the script ends once it sends the filled form to be updated on the client, so there is an auto mysql_close.(Which would rollback your transaction in the SELECT) With a persistent connection, may be it would keep the transaction pending, but there is no way to store the connection persistent link resource in a session or anywhere else, so there is no way to open the updater script with the same link resource to UPDATE and then COMMIT, or how does it works? Please help! in PHP mySQL, the use of SELECT FOR UPDATE and SELECT LOCK IN SHARE MODE, How to use it? They don’t make any sense to me in a web application, because when you first read the data (SELECT FOR UPDATE)the script ends once it sends the filled form to be updated on the client, so there is an auto mysql_close.(Which would rollback your transaction in the SELECT)
With a persistent connection, may be it would keep the transaction pending, but there is no way to store the connection persistent link resource in a session or anywhere else, so there is no way to open the updater script with the same link resource to UPDATE and then COMMIT, or how does it works?

]]> By: Rubén Ortiz » Apache. MaxClients y más… http://www.mysqlperformanceblog.com/2006/11/12/are-php-persistent-connections-evil/comment-page-1/#comment-298300 Rubén Ortiz » Apache. MaxClients y más… Tue, 13 May 2008 08:46:32 +0000 http://www.mysqlperformanceblog.com/2006/11/12/are-php-persistent-connections-evil/#comment-298300 [...] http://www.mysqlperformanceblog.com/2006/11/12/are-php-persistent-connections-evil/ [...] [...] http://www.mysqlperformanceblog.com/2006/11/12/are-php-persistent-connections-evil/ [...]

]]> By: raci http://www.mysqlperformanceblog.com/2006/11/12/are-php-persistent-connections-evil/comment-page-1/#comment-258488 raci Thu, 27 Mar 2008 20:24:40 +0000 http://www.mysqlperformanceblog.com/2006/11/12/are-php-persistent-connections-evil/#comment-258488 how to increasr max connection limit in mysql i am getting error too many connection as i am using Shared hosting ,. how to change the setting in Cpanel how to increasr max connection limit in mysql i am getting error too many connection as i am using Shared hosting
,. how to change the setting in Cpanel

]]> By: Pseudo Singleton Pattern com PHP5 « Julio Vedovatto http://www.mysqlperformanceblog.com/2006/11/12/are-php-persistent-connections-evil/comment-page-1/#comment-253186 Pseudo Singleton Pattern com PHP5 « Julio Vedovatto Sat, 15 Mar 2008 23:45:48 +0000 http://www.mysqlperformanceblog.com/2006/11/12/are-php-persistent-connections-evil/#comment-253186 [...] que conexão persistente com o banco de dados é cafonérrimoooo, para saber, leia este artigo: Are PHP persistent connections evil?. O pessoal do suporte técnico do Onda me indicou o artigo (adoro quando provam que eu estou [...] [...] que conexão persistente com o banco de dados é cafonérrimoooo, para saber, leia este artigo: Are PHP persistent connections evil?. O pessoal do suporte técnico do Onda me indicou o artigo (adoro quando provam que eu estou [...]

]]> By: Blogging in French community ?? « Charles Fomevor’s Weblog http://www.mysqlperformanceblog.com/2006/11/12/are-php-persistent-connections-evil/comment-page-1/#comment-230378 Blogging in French community ?? « Charles Fomevor’s Weblog Sat, 12 Jan 2008 12:43:07 +0000 http://www.mysqlperformanceblog.com/2006/11/12/are-php-persistent-connections-evil/#comment-230378 [...] mysqli pour des problèmes de performances et de stabilité (voir ce post très intéressant : http://www.mysqlperformanceblog.com/2006/11/12/are-php-persistent-connections-evil/). Apparemment, ces problèmes ont été résolus avec mysqlnd puisque cette fonctionnalité [...] [...] mysqli pour des problèmes de performances et de stabilité (voir ce post très intéressant : http://www.mysqlperformanceblog.com/2006/11/12/are-php-persistent-connections-evil/). Apparemment, ces problèmes ont été résolus avec mysqlnd puisque cette fonctionnalité [...]

]]> By: Blogs - Persistent is evil http://www.mysqlperformanceblog.com/2006/11/12/are-php-persistent-connections-evil/comment-page-1/#comment-213648 Blogs - Persistent is evil Fri, 07 Dec 2007 04:28:28 +0000 http://www.mysqlperformanceblog.com/2006/11/12/are-php-persistent-connections-evil/#comment-213648 [...] que ver con el hecho de porque no se deben utilizar conexiones persistentes a la base de datos. http://www.mysqlperformanceblog.com/…nections-evil/ Que es algo que tenamos activado en CemZoo, porque yo que vengo de un mundo de programacin [...]

]]> By: Roms BLOG » mysqlnd, un driver MySQL optimisé pour PHP http://www.mysqlperformanceblog.com/2006/11/12/are-php-persistent-connections-evil/comment-page-1/#comment-212096 Roms BLOG » mysqlnd, un driver MySQL optimisé pour PHP Tue, 04 Dec 2007 17:44:48 +0000 http://www.mysqlperformanceblog.com/2006/11/12/are-php-persistent-connections-evil/#comment-212096 [...] mysqli pour des problèmes de performances et de stabilité (voir ce post très intéressant : http://www.mysqlperformanceblog.com/2006/11/12/are-php-persistent-connections-evil/). Apparemment, ces problèmes ont été résolus avec mysqlnd puisque cette fonctionnalité [...] [...] mysqli pour des problèmes de performances et de stabilité (voir ce post très intéressant : http://www.mysqlperformanceblog.com/2006/11/12/are-php-persistent-connections-evil/). Apparemment, ces problèmes ont été résolus avec mysqlnd puisque cette fonctionnalité [...]

]]>