English
| Showing entries 1 to 30 of 30 |
-0
My take on the good, the bad, and the ugly of our Winter season, beside all the snow I’ve shoveled and blown to get in and out of my driveway, is:
The Good?
February brought us MySQL 5.6 GA (General Availability) and Ruby 2.0.0-p0. Mega thanks to the MySQL and Ruby teams! By the way, if you’ve always wanted to know a little about Ruby without a great deal of effort, you should check this awesome little 20 minute Ruby tutorial. Naturally, the best
[Read more...]I recently worked on a Rails 3.2 project that used the sweet PLupload JavaScript/Flash upload tool to upload files to the web app. To make it easier for users to upload large and/or remote files to the app, we also wanted to let them upload via SFTP. The catch was, our users didn't have SFTP accounts on our server and we didn't want to get into the business of creating and managing SFTP accounts. Enter: ProFTPD and virtual users.
ProFTPD's virtual users concept allows you to point ProFTPD at a SQL database for your user and group authentication. This means SFTP logins don't need actual system logins (although you can mix and match if you want). Naturally, this is perfect for dynamically creating and
[Read more...]ConFoo is one of the most important web developer-oriented conferences. ConFoo 2013 will be held on February 25 through March 1 in Montreal, Canada.
We just open
ed call for papers and we are looking for the best PHP, Java, Ruby, DotNet,HTML5 experts who are willing to share their knowledge with the Canadian community. Candidates can submit proposals until September 23. Consult the call for papers page for details and to start submitting. That page also explains what expenses ConFoo can cover for speakers. You can also get advice on how to write proposals.
The call for papers is public, meaning that all proposals get published on the website for others to
[Read more...]In this tutorial I will describe how to setup gitorious on Ubuntu 11.10. Gitorious – a Ruby on Rails web application – can be used to conclude git projects in an easy to manage user interface. In the README of the gitorious repository I found the evidence “One of the main challenges in Gitorious is its installation process. It is anything but trivial.” – It appears correct 
During the installation I got some errors by the sphinx search engine and some ruby gems. You will find the workarounds in this tutorial.
Contents
[Read more...]We’ve seen the rise of open source software in the enterprise and also beyond the IT industry, but the real keys to openness and its advantages in today’s technology world — where efficient use of cloud computing and supporting services are paramount — exist in open application programming interfaces, or APIs.
Open source software continues to be a critical part of software development, systems administration, IT operations and more, but much of the action in leveraging modern cloud computing and services-based infrastructures centers on APIs. Open APIs are the new open source.
Read the full story at LinuxInsider.
As you may have heard, this week on December 28, 2011, a group of security experts released information about a nasty problem in almost all languages and platforms related to hash function collisions and possibility of using those for DoS attack on web applications.
Ruby core team released new 1.8.7-p357 version with the problem fixed. JRuby development team came out with the new 1.6.5.1 release. Unfortunately 2 days after the release there is still no information from Ruby Enterprise Edition team on what to do with all the ree deployments.
So, since there is no
[Read more...]NoMethodError: undefined method `each' for nil:NilClass
(NoMethodError) "undefined method `each' for nil:NilClass"
/usr/local/rvm/gems/ruby-1.9.2-p0/ruby/1.9.1/gems/mysql2-0.2.4/lib/active_record/connection_adapters/mysql2_adapter.rb:628:in `select'
/usr/local/rvm/gems/ruby-1.9.2-p0/ruby/1.9.1/gems/activerecord-3.0.0/lib/active_record/connection_adapters/abstract/database_statements.rb:7:in `select_all'This week, after 3 months in the works, we’ve finally released version 1.7.0 of DbCharmer ruby gem – Rails plugin that significantly extends ActiveRecord’s ability to work with multiple databases and/or database servers by adding features like multiple databases support, master/slave topologies support, sharding, etc.
New features in this release:
-0
Update: Jeff Preshing has written an [Read more...]
-0
I was testing some MySQL puppet modules on my Vagrant box earlier this week and one of them required augeas.
I kept running into "Could not find a default provider for augeas", however all the appropriate augeas , augeas-lib and ruby-augeas packages were installed. I inspected the different ruby directories and the files were perfectly in /usr/lib/ruby/site_ruby/1.8 where I expected them.
With all the files seemd to be in the right place, my next option was to strace a small ruby script that included augeas, guess what that showed ..
This looks like fun: Ruby on Ales. It’s March 24-25, 2011 in Bend Oregon (USA), and the tag line is Ruby, snow, and beer. Does it get any better than this?
Related posts:
We continue to see more evidence of the themes we discuss in our latest CAOS special report, Seeding the Clouds, which examines the open source software used in cloud computing, the vendors backing open source, the cloud providers using it and the impact on the industry.
First, as usual, we are seeing consistencies between our own research — which indicates open source is a huge part of today’s cloud computing offerings from major providers like Amazon, Google, Rackspace, Terremark and VMware — and that of code analysis and management vendor Black Duck. In its analysis of code that runs the cloud, Black Duck also found a preponderance of open source pieces, in many cases the same projects we profile in our report.
Indeed, open source software is an
[Read more...]I’ll be joining the NovaRUG (Northern Virginia Ruby Users’ Group) on Thursday to talk about MySQL performance. See their blog for the details and how to RSVP.
Related posts:
Before we get started here, let me state that I am using Ruby 1.9.1 (I refuse to look back!), and that I have not tested this solution on Ruby 1.8.6, but it should work there as well, though I may have some 1.9-isms in my code. Should be easy enough to spot.
I am working on writing an application in Ruby that can talk to an Windows application that has an ActiveX COM Automation object exposed. Ruby is basically the wrapper so that I can access the application from the Linux side of the world. So, I am using Ruby’s DRb to bridge those worlds because, after all, I am the Linux Bloke!
Well, as you may have guessed, I ran into problems with this approach. I simply could not call the COM objects from a call initiated with DRb, though I could call them directly just fine. After scratching my head a bit, I figured it out.
The win32ole module that runs on the Windows side of the world
[Read more...]Back in November 2009 I was working on a project to port Scribd.com code base to Rails 2.2 and noticed that some old plugins we were using in 2.1 were abandoned by their authors. Some of them were just removed from the code base, but one needed a replacement – that was an old plugin called acts_as_readonlyable that helped us to distribute our queries among a cluster of MySQL slaves. There were some alternatives but we didn’t like them for one or another reasons so we’ve decided to go with creating our own ActiveRecord plugin, that would help us scale our databases out. That’s the story behind the first release of DbCharmer.
Today, six months after the first release of
[Read more...]Persistence Smoothie: Blending NoSQL and SQL – see user feedback and comments at http://joind.in/talk/view/1332.
Michael Bleigh from Intridea, high-end Ruby and Ruby on Rails consultants, build apps from start to finish, making it scalable. He’s written a lot of stuff, available at http://github.com/intridea. @mbleigh on twitter
NoSQL is a new way to think about persistence. Most NoSQL systems are not ACID compliant (Atomicity, Consistency, Isolation, Durability).
Generally, most NoSQL systems have:
NoSQL tries to scale (more) simply, it is starting to go
[Read more...]Most of this stuff is not PHP specific, and Python or Ruby or Java or .NET developers can use the tools in this talk.
The session on joind.in, with user comments/feedback, is at http://joind.in/talk/view/1320.
Slides are at http://talks.php.net/show/confoo10
“My name is Rasmus, I’ve been around for a long time. I’ve been doing this web stuff since 1992/1993.”
“Generally performance is not a PHP problem.” Webservers not config’d, no expire headers on images, no favicon.
Tools: Firefox/Firebug extension called YSlow (developed by yahoo) gives you a grade on your site.
If you have done a good job of building your rails models, you may find that they are helpful for your non-rails system maintenance and such. They may even be necessary to reuse if you follow the rails model of using activerecord validations (rather that database RI) to preserve the integrity of your data.
Or you may just find yourself rewriting the same code again and again, and want all that good railsiness to make it easier to write and maintain. Personally I find myself in some instance of ./script/console as often as irb just so I can get the activesupport helper methods ( 4.days.from_now and such) that many rails developers are surprised to find are not actually a standard part of ruby.
So, the good news is it is easy to reuse rails code outside of rails.
Let's say you want to do some data manipulation (reporting, loading,
[Read more...]If you have done a good job of building your rails models, you may find that they are helpful for your non-rails system maintenance and such. They may even be necessary to reuse if you follow the rails model of using activerecord validations (rather that database RI) to preserve the integrity of your data.
Or you may just find yourself rewriting the same code again and again, and want all that good railsiness to make it easier to write and maintain. Personally I find myself in some instance of ./script/console as often as irb just so I can get the activesupport helper methods ( 4.days.from_now and such) that many rails developers are surprised to find are not actually a standard part of ruby.
So, the good news is it is easy to reuse rails code outside of rails.
Let’s say you want to do some data manipulation (reporting, loading,
[Read more...]If you have done a good job of building your rails models, you may find that they are helpful for your non-rails system maintenance and such. They may even be necessary to reuse if you follow the rails model of using activerecord validations (rather that database RI) to preserve the integrity of your data.
Or you may just find yourself rewriting the same code again and again, and want all that good railsiness to make it easier to write and maintain. Personally I find myself in some instance of ./script/console as often as irb just so I can get the activesupport helper methods ( 4.days.from_now and such) that many rails developers are surprised to find are not actually a standard part of ruby.
So, the good news is it is easy to reuse rails code outside of rails.
Let's say you want to do some data manipulation (reporting,
[Read more...]If you have done a good job of building your rails models, you may find that they are helpful for your non-rails system maintenance and such. They may even be necessary to reuse if you follow the rails model of using activerecord validations (rather that database RI) to preserve the integrity of your data.
Or you may just find yourself rewriting the same code again and again, and want all that good railsiness to make it easier to write and maintain. Personally I find myself in some instance of ./script/console as often as irb just so I can get the activesupport helper methods ( 4.days.from_now and such) that many rails developers are surprised to find are not actually a standard part of ruby.
So, the good news is it is easy to reuse rails code outside of rails.
Let's say you want to do some data manipulation (reporting,
[Read more...]Today I’m proud to announce the first public release of our ActiveRecord database connection magic plugin: DbCharmer.
DbCharmer is a simple yet powerful plugin for ActiveRecord that does a few things:
switch_connection_to method)
on_* methods family)
There are two options when
It’s been just over three months since the April 2009 MySQL Users Conference and Expo. It took a while for the files to be processed, and then uploaded to www.technocation.org, and then I found out that the online streaming was not working properly. So I started playing with things, re-encoding some videos, updating the software, but to no avail.
Just as I was about to give up I got notification that Technocation, Inc. was accepted into YouTube’s not-for-profit program, which allows movies larger than 10 minutes to be uploaded and viewed advertisement-free.
So then I had to upload the videos to YouTube and add descriptions.
So with no *further* delay, here are all the videos from the 2009 MySQL Conference and 2009 MySQL Camp:
The brief description — just the
[Read more...]Sun's LAMP support is assembled from two pieces: the L is from our Linux/GNU Support (see SunSolve entry), while the AMP comes from the GlassFish WebStack, which, in its latest incarnation includes Apache HTTP Server, lighttpd, memcached, MySQL, PHP, Python, Ruby, Squid, Tomcat, GlassFish (v2.1) and Hudson (features).
The inclusion of Hudson is a bit of an opportunistic move (more on that in a bit), the rest comprises a well tested, integrated, optimized, and extended component
[Read more...]I started my company about a year ago, but I’ve been doing consulting for a long time. In fact, my first job in the IT industry was working for a consulting firm. Before that, starting as far back as grade school, I was involved in a lot of volunteer civic and community service activities. I admire companies who get involved in their communities, or even outside of their communities, wherever help is needed.
As part of my business plan, I’ve put in place a policy of accepting one pro-bono consulting project per year. So far, I haven’t gotten any requests for free consulting work, so here’s my public shout out to let you know what types of services are available:
1. Speaking or Training. My specialties are things like advanced Linux administration and SQL, but I’m perfectly capable of delivering
[Read more...]It is no joke that computer hardware has advanced by leaps and bounds over the past decade. 10 years ago, multicore systems were expensive and high-end; today, your grandmother may have one and probably have no clue what she has!
Alas, application software has not kept pace. The Linux OS has done a fair job at being able to leverage some of the power multicore systems offer us, but applications running on them have not. The same can be said more or less for Windows, but it’s been a long while since I did anything systems-level with Windows. But the same issues do apply, however.
We are today with the multicore situation where we were in the 80′s and the 90′s with the multithreaded issues. Back then, CPUs grew support for multithreaded programming, but software — including some OSes — were slow to adopt.
[Read more...]The call for papers for OSDC 2009 is open until 30 June 2009; yes that’s only a few more days. Submit your abstract and do a talk at this fab conference!
This is a grassroots style conference designed by developers for developers. It covers Perl, Python, Ruby/Rails, PHP, Java/Grails and Open Source operating systems as well as some business aspects. If you’d like to cover something else as well that is Open Source themed, please feel free.
The Call for Papers can be found at: http://2009.osdc.com.au/call-for-papers
The important dates are:
OSDC
[Read more...]StackOverflow is an amazing site for coding questions. It was created by Joel Spolsky of joelonsoftware.com, Jeff Atwood of codinghorror.com, and some other incredibly smart guys who truly care about user experience. I have been a total fan of SO since it went mainstream and it's now a borderline addiction (you can see my StackOverflow badge on the right sidebar).
Update 6/21/09: This server is currently under very heavy load (10-200), even with caching plugins enabled. Please bear with me as I try to
[Read more...]| Showing entries 1 to 30 of 30 |
