similar to: Fast and reliable host for database + AJAX intensive Rails application.

I am developing a large scale financial application which is going to be very intensive write-wise, and use a lot of transactions. I can see how the the web and application servers can be scaled and load balanced quite easily, but not the database. The setups I have looked at so far seem to deal with coping with a lot of reads, and minimal writes - this maybe because they are largely content

Hi I''m choosing a database for a new Rails application. I pretty much ruled out PostgreSQL, since despite good reviews of the database itself, it seems it has countless issues with Rails (for example: in recent releases migrations don''t work, and unit-tests fail). So I should now choose between MySQL 4.1, which as I understand enjoys widespread popularity - perhaps the most

Hello, I am attempting to create several plots based on "site" (~300 total) and am having trouble with the code. I simply want to create a plot using the code, plot(year, peak), for the following dataset. I would like for each site to be plotted on a separate page and the plots saved in a directory. Would a "foreach" loop work? I tried a "by" statement, but

I''m rewriting an application with the intention to use the elegant CRUD and REST design principles as outlined by DHH in his RailsConf Keynote[1]. The question is: how do you use those principles for an application that is of a sequential nature? The application works much like an MS Windows wizard: user begins at screen foo. After doing (or not) some stuff in screen foo, he is taken to

Unsubscribe Sent from my BlackBerry? wireless handheld -----Original Message----- From: rails-request@lists.rubyonrails.org Date: Fri, 9 Jun 2006 18:24:09 To:rails@lists.rubyonrails.org Subject: Rails Digest, Vol 21, Issue 195 Send Rails mailing list submissions to rails@lists.rubyonrails.org To subscribe or unsubscribe via the World Wide Web, visit

Hi, I am begining the design of an order management system, and had a few questions about the database design. For example: I have a customers table and an orders table, with a one to many relationship. Now if i change the customers address after the order has been created, it will be updated in any of the past orders, and I do not wish this to happen. Is the best way to deal with this to store

So I want to SELECT from multiple tables, so as to be able to do "SELECT FROM foo, bar WHERE foo.id=bar.id AND bar.baz=23". How do I do it with AR#find? Also, I need this for associations. has_many et. al. have :finder_sql, which is nice, but feels like a Pyrrhic: it''s basically doing the association in pure SQL, defeating the purpose of AR. -- -Alder

I am running Win2K (RTM build 2195) and ever since RC2 I have had problems copying files from my Win2K machine to my RedHat 6.1 Linux (stock kernel 2.2.12-20) box. The Linux box is running Samba 2.0.6. I either get: J:\mail\archive\todo\dingo>copy dmail-122499 \\alder\mikenel Access is denied. Or I get a file with a funny character created on the box: [...] -rwxr--r-- 1 mikenel mikenel

File.open in core Ruby is nifty, in that it automagically closes the file when you''re done using/manipulating it. I''m wondering whether there''s something like that for ActiveRecord? So you can do: AR.find(23).open {|ar| ar.foo = ''bar'' ... } And ar.save would be called when the block closes. -- -Alder

Hello specialists In setting up a diskless X-Terminal I got stuck with the transfer of the ramdisk from the server to the target. With a ramdisk image size of about 60 Mb things go well, the file gets transfered completely and Linux boots perfectly. With a ramdisk image size of about 104 Mb the tftp transfer of the kernel succeds but the transfer of the ramdisk image fails. As tftp daemon I

I have two sites, which are seperated by a campus network. Even with the new 'browse fix' release, I cannot convice the win 3.11 machines to do a domain login to the server in the other subnet. A single win95 machine in the subnet does every thing fine, domain login, network neighbourhood, the works. The win 3.11 machines can browse for shares on the remote server and connect fine - they

I'm trying to convice a webmaster to start offering Vorbis in addition to his current RealAudio 3(GAH!) web streams. I was just wondering what the status on the RealOne/Helix DNA plugin was so I could include it in a letter I'm going to be sending him today. <p>--- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/ To unsubscribe

Hi Let''s say we set session[:foo] = ''bar''. Now we want to remove the :foo key completely. How do you do that? Appearantly, session is a CGI::Session [1] instance, so it doesn''t have #delete like Hash. I tried: session[:foo] = nil But then debug(session) shows an empty :foo key. I''d like to remove that key, as my session is already pretty crowded. Is

Hi there I''m planning to build "The Perfect Rails/Debian/Lighttpd Stack", published by Ezra Zygmuntowicz and Sean Schertell at http://brainspl.at/rails_stack.html I''m wondering what sort of constant maintanance that setup would incur. What actions have be regularly performed to keep this setup healthy and secure under normal conditions? Alder

Hi there I need to store additional attributes on join table. Searching the Wiki [1] revealed two possible methods: 1) push_with_attributes, as described by Justin Palmer [2]. Unfortunately, "this method is now deprecated" [3]. Even if it wasn''t, there seem to be inherent problems with that approach, for example with updating those additional attributes, though Joshua Muheim

Hi I have an action which saves the originating resource from which it was called, and returns to it later. This is done by setting: session[:return_to] = request.referer ... redirect_to(session[:return_to]) Which works great for GET resources. The problem is that POST variables aren''t kept in request.referer, so this method fails when the originating resource is a a POST.

debug1: X11 connection requested. debug2: fd 20 setting TCP_NODELAY debug2: fd 20 is O_NONBLOCK debug2: fd 20 is O_NONBLOCK debug1: channel 3: new [X11 connection from 127.0.0.1 port 47773] debug1: channel 3: open confirm rwindow 3000 rmax 35840 debug1: server_input_channel_req: channel 3 request exit-status reply 0 debug1: session_by_channel: unknown channel 3 debug1: dump: used 1 session 0

i am asked to implement a call center of 50 seats for my company , and i was wondering if Asterisk can fit this as a relaibale and low price system is it mature enough for this task?? best regards Gers -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.digium.com/pipermail/asterisk-users/attachments/20090712/b5bab36d/attachment.htm

Hi ActionView::Helpers::FormHelper methods (e.g. #text_field, #check_box...) take object_name as an argument. From this argument they infer a name that is supposed to contains the reference to the relevant object. I can''t see why the FormHelper methods were designed that way. Compared to simply passing them a reference, the current way seems too complicated and an invitation to problems

Hi I was recently taught about the useful ActiveRecord::Base#serialize. It''s very useful for persisting arbitrary objects through the regular database. For example, say you want to store a Set of all the years a Convention took place. You do: class Convention < ActiveRecord::Base serialize :years, Set end This effectively creates a Convention#years attribute, which is a set: you