Re: [rt-users] Is SQLite no longer supported?
2009/11/25 Tom Lahti t...@bitstatement.net: SQLite's complete lack of threading model means responding to a single request at a time. Simply put, if you have enough users that the possibility of multiple people requesting information at the same time, or a user request happening when an external ticket comes in (email via rt-mailgate etc.), then you're going to be causing users to stall, waiting. You may be able to get away with it for a small number of concurrent users (1-5 maybe) in a low volume environment, but if you're wanting to do anything serious with email coming in at any moment, then you'd be better off setting up a MySQL/PgSQL DB. The effort isn't much different. Stuart I was thinking more in terms of reporting reliability. In short, SQLite is not ACID compliant. If underneath you are not ACID compliant, then there is no assurance that what's in a ticket's history necessarily reflects reality. History items may have been lost due to power outages, locking issues, buggy web server software, etc etc etc. Without ACID compliance, you really don't have an audit trail. You can pretend you do, but you really don't :) In defence of SQLite (not that I'm especially cheering for it), it actually is ACID compliant (http://www.sqlite.org/transactional.html, http://www.sqlite.org/atomiccommit.html) and concurreny issues only affect writers (readers are fully concurrent; http://www.sqlite.org/lockingv3.html, http://www.sqlite.org/faq.html#q6), so my question really was more directed to real-world experiences with rt3 and SQLite rather than rumours :) ___ http://lists.bestpractical.com/cgi-bin/mailman/listinfo/rt-users Community help: http://wiki.bestpractical.com Commercial support: sa...@bestpractical.com Discover RT's hidden secrets with RT Essentials from O'Reilly Media. Buy a copy at http://rtbook.bestpractical.com
Re: [rt-users] Is SQLite no longer supported?
In defence of SQLite (not that I'm especially cheering for it), it actually is ACID compliant (http://www.sqlite.org/transactional.html, http://www.sqlite.org/atomiccommit.html) and concurreny issues only affect writers (readers are fully concurrent; http://www.sqlite.org/lockingv3.html, http://www.sqlite.org/faq.html#q6), so my question really was more directed to real-world experiences with rt3 and SQLite rather than rumours :) It wasn't the last time I looked at it. I still wonder about transaction isolation levels, but as long as RT doesn't use BEGIN, COMMIT or ROLLBACK, I guess that doesn't matter much. -- -- Tom Lahti, SCMDBA, LPIC-1 BIT LLC (425)251-0833 x 117 http://www.bitstatement.net/ -- ___ http://lists.bestpractical.com/cgi-bin/mailman/listinfo/rt-users Community help: http://wiki.bestpractical.com Commercial support: sa...@bestpractical.com Discover RT's hidden secrets with RT Essentials from O'Reilly Media. Buy a copy at http://rtbook.bestpractical.com
Re: [rt-users] Is SQLite no longer supported?
2009/11/24 Todd Chapman t...@chaka.net: On Mon, Nov 23, 2009 at 10:35 PM, Jesse Vincent je...@bestpractical.com wrote: On Mon, Nov 23, 2009 at 10:33:16PM -0500, Todd Chapman wrote: I just checked RT out of git and ran: ./configure --enable-layout=inplace --with-my-user-group --with-db-typ=SQLite It helps if you don't misspell '--with-db-type' Crap. Thanks Jesse! Slightly offtopic - is there some best practice limit saying when SQLite stops being efficient and it's time to use something bigger? Or in other words, how large are average SQLite installations in terms of users, tickets, etc.? ___ http://lists.bestpractical.com/cgi-bin/mailman/listinfo/rt-users Community help: http://wiki.bestpractical.com Commercial support: sa...@bestpractical.com Discover RT's hidden secrets with RT Essentials from O'Reilly Media. Buy a copy at http://rtbook.bestpractical.com
Re: [rt-users] Is SQLite no longer supported?
Slightly offtopic - is there some best practice limit saying when SQLite stops being efficient and it's time to use something bigger? Or in other words, how large are average SQLite installations in terms of users, tickets, etc.? In my opinion, I would say that SQLite is appropriate for testing and development work, where you have developers working on customizations of RT. I don't think SQLite is appropriate for production environments of any size. But that's just me. -- -- Tom Lahti, SCMDBA, LPIC-1 BIT LLC (425)251-0833 x 117 http://www.bitstatement.net/ -- ___ http://lists.bestpractical.com/cgi-bin/mailman/listinfo/rt-users Community help: http://wiki.bestpractical.com Commercial support: sa...@bestpractical.com Discover RT's hidden secrets with RT Essentials from O'Reilly Media. Buy a copy at http://rtbook.bestpractical.com
Re: [rt-users] Is SQLite no longer supported?
-Original Message- From: rt-users-boun...@lists.bestpractical.com [mailto:rt-users- boun...@lists.bestpractical.com] On Behalf Of Tom Lahti Sent: Wednesday, 25 November 2009 10:55 To: Ivan Voras Cc: rt-users Subject: Re: [rt-users] Is SQLite no longer supported? Slightly offtopic - is there some best practice limit saying when SQLite stops being efficient and it's time to use something bigger? Or in other words, how large are average SQLite installations in terms of users, tickets, etc.? In my opinion, I would say that SQLite is appropriate for testing and development work, where you have developers working on customizations of RT. I don't think SQLite is appropriate for production environments of any size. But that's just me. I'd have to completely with this. SQLite's complete lack of threading model means responding to a single request at a time. Simply put, if you have enough users that the possibility of multiple people requesting information at the same time, or a user request happening when an external ticket comes in (email via rt-mailgate etc.), then you're going to be causing users to stall, waiting. You may be able to get away with it for a small number of concurrent users (1-5 maybe) in a low volume environment, but if you're wanting to do anything serious with email coming in at any moment, then you'd be better off setting up a MySQL/PgSQL DB. The effort isn't much different. Stuart ___ http://lists.bestpractical.com/cgi-bin/mailman/listinfo/rt-users Community help: http://wiki.bestpractical.com Commercial support: sa...@bestpractical.com Discover RT's hidden secrets with RT Essentials from O'Reilly Media. Buy a copy at http://rtbook.bestpractical.com
Re: [rt-users] Is SQLite no longer supported?
Slightly offtopic - is there some best practice limit saying when SQLite stops being efficient and it's time to use something bigger? Or in other words, how large are average SQLite installations in terms of users, tickets, etc.? We don't recommend that you use RT on SQLite in production, generally. -- ___ http://lists.bestpractical.com/cgi-bin/mailman/listinfo/rt-users Community help: http://wiki.bestpractical.com Commercial support: sa...@bestpractical.com Discover RT's hidden secrets with RT Essentials from O'Reilly Media. Buy a copy at http://rtbook.bestpractical.com
Re: [rt-users] Is SQLite no longer supported?
Slightly offtopic - is there some best practice limit saying when SQLite stops being efficient and it's time to use something bigger? Or in other words, how large are average SQLite installations in terms of users, tickets, etc.? In my opinion, I would say that SQLite is appropriate for testing and development work, where you have developers working on customizations of RT. I don't think SQLite is appropriate for production environments of any size. But that's just me. SQLite could be okay for very small/low-concurrency production systems. Compare Firefox's use of SQLite for its data stores. Of course, as you may have experienced, the system starts to falter with several thousand entries in Places.sqlite (bookmarks + history). -- Cambridge Energy Alliance: Save money. Save the planet. ___ http://lists.bestpractical.com/cgi-bin/mailman/listinfo/rt-users Community help: http://wiki.bestpractical.com Commercial support: sa...@bestpractical.com Discover RT's hidden secrets with RT Essentials from O'Reilly Media. Buy a copy at http://rtbook.bestpractical.com
Re: [rt-users] Is SQLite no longer supported?
SQLite's complete lack of threading model means responding to a single request at a time. Simply put, if you have enough users that the possibility of multiple people requesting information at the same time, or a user request happening when an external ticket comes in (email via rt-mailgate etc.), then you're going to be causing users to stall, waiting. You may be able to get away with it for a small number of concurrent users (1-5 maybe) in a low volume environment, but if you're wanting to do anything serious with email coming in at any moment, then you'd be better off setting up a MySQL/PgSQL DB. The effort isn't much different. Stuart I was thinking more in terms of reporting reliability. In short, SQLite is not ACID compliant. If underneath you are not ACID compliant, then there is no assurance that what's in a ticket's history necessarily reflects reality. History items may have been lost due to power outages, locking issues, buggy web server software, etc etc etc. Without ACID compliance, you really don't have an audit trail. You can pretend you do, but you really don't :) -- -- Tom Lahti, SCMDBA, LPIC-1 BIT LLC (425)251-0833 x 117 http://www.bitstatement.net/ -- ___ http://lists.bestpractical.com/cgi-bin/mailman/listinfo/rt-users Community help: http://wiki.bestpractical.com Commercial support: sa...@bestpractical.com Discover RT's hidden secrets with RT Essentials from O'Reilly Media. Buy a copy at http://rtbook.bestpractical.com
[rt-users] Is SQLite no longer supported?
I just checked RT out of git and ran: ./configure --enable-layout=inplace --with-my-user-group --with-db-typ=SQLite But the database type is set to 'mysql' in RT_Config.pm. What gives? The schema.SQLite file still exists. ___ http://lists.bestpractical.com/cgi-bin/mailman/listinfo/rt-users Community help: http://wiki.bestpractical.com Commercial support: sa...@bestpractical.com Discover RT's hidden secrets with RT Essentials from O'Reilly Media. Buy a copy at http://rtbook.bestpractical.com
Re: [rt-users] Is SQLite no longer supported?
On Mon, Nov 23, 2009 at 10:33:16PM -0500, Todd Chapman wrote: I just checked RT out of git and ran: ./configure --enable-layout=inplace --with-my-user-group --with-db-typ=SQLite It helps if you don't misspell '--with-db-type' But the database type is set to 'mysql' in RT_Config.pm. What gives? The schema.SQLite file still exists. ___ http://lists.bestpractical.com/cgi-bin/mailman/listinfo/rt-users Community help: http://wiki.bestpractical.com Commercial support: sa...@bestpractical.com Discover RT's hidden secrets with RT Essentials from O'Reilly Media. Buy a copy at http://rtbook.bestpractical.com -- ___ http://lists.bestpractical.com/cgi-bin/mailman/listinfo/rt-users Community help: http://wiki.bestpractical.com Commercial support: sa...@bestpractical.com Discover RT's hidden secrets with RT Essentials from O'Reilly Media. Buy a copy at http://rtbook.bestpractical.com
Re: [rt-users] Is SQLite no longer supported?
On Mon, Nov 23, 2009 at 10:35 PM, Jesse Vincent je...@bestpractical.com wrote: On Mon, Nov 23, 2009 at 10:33:16PM -0500, Todd Chapman wrote: I just checked RT out of git and ran: ./configure --enable-layout=inplace --with-my-user-group --with-db-typ=SQLite It helps if you don't misspell '--with-db-type' Crap. Thanks Jesse! But the database type is set to 'mysql' in RT_Config.pm. What gives? The schema.SQLite file still exists. ___ http://lists.bestpractical.com/cgi-bin/mailman/listinfo/rt-users Community help: http://wiki.bestpractical.com Commercial support: sa...@bestpractical.com Discover RT's hidden secrets with RT Essentials from O'Reilly Media. Buy a copy at http://rtbook.bestpractical.com -- ___ http://lists.bestpractical.com/cgi-bin/mailman/listinfo/rt-users Community help: http://wiki.bestpractical.com Commercial support: sa...@bestpractical.com Discover RT's hidden secrets with RT Essentials from O'Reilly Media. Buy a copy at http://rtbook.bestpractical.com
