Raible Designs

Nexus is a kick-ass Repository Manager

I started my current gig at the end of last year. I've been enjoying the work and especially the project infrastructure we've been using. We're using the usual suspects: JIRA, Confluence, Hudson and Subversion. We're also using a couple new ones, namely sventon and Nexus. For building, we're using Maven and Ivy (as a Grails plugin).

I'm writing this post to talk about Nexus and how much I've enjoyed using it. I like Nexus for two reasons: it's aesthetically pleasing and it's well-documented. Another reason I really dig it is because I haven't had to touch it since I first configured it. Software that just keeps on humming is always fun to work with.

Initially, I remember having some issues setting up repositories. I also remember solving them after learning how groups work.

In addition to on-the-job, I've started to use Nexus more and more in my open source life. With the help of Jason van Zyl, I recently moved AppFuse's repository to Sonatype's oss.sonatype.org. I also noticed there's a Nexus instance for Apache projects. If that's not enough, you can get Nexus Pro free if you're an open source project.

Personally, the open source version of Nexus seems good enough for me. While the Staging Suite looks nice, I think it's possible to do a lot of similar things with good communication. After all, it's not going to free you from having to wrestle with the maven-release-plugin.

Next week, I'm helping to polish and document our entire release process (from dev → qa → production). If you have any advice on how to best perform releases with Maven, Grails and/or Nexus, I'd love to hear about it. My goal is extreme efficiency so releases can be done very quickly and with minimal effort.

GWT and AppFuse

Someone recently sent me the following e-mail asking about GWT integration in AppFuse.

I see from your blog that you're spending some time with GWT at the moment. What's your plan, are you going to integrate GWT as another UI Option for AppFuse?

The reason I'm asking is that I actually checked out all of the AppFuse code from the svn repository yesterday, with the intention of starting off adding some GWT stuff in there. My intention was to start by getting a basic Maven archetype together for GWT as an AppFuse UI.

However, if you're planning on doing this yourself in the near future, then there's no point in me starting doing it, I'd have to learn how to write archetype's for a start (not that it looks too difficult) but you'd obviously do it much quicker.

Being a good open-source developer, I moved the discussion to the developer mailing list and replied there:

I know I've been slacking on AppFuse development, but it is ski season and running to work seems to drain my late-night coding ambitions. With that being said, I'm committed to getting AppFuse 2.1 released by JavaOne (hopefully sooner). I figure it's a good week's worth of work and I'll probably have to do it late at night to find the time. That's OK though, I usually really start to enjoy it once I get into it.

New 15" MacBook Pro with SSD

Just over a month ago, I reduced my computing machinery from 3 to 1. Since I was running to work, this quickly presented a problem of how to get my laptop to/from the office. I decided to go for the "no home computer" about half the time and it was a fairly pleasant experience. It's hard to stay up late and hack away on open source when all you have is an iPhone.

To be perfectly honest, I only made it about 2 weeks before I ordered a new laptop, but I cancelled the order shortly after. Last weekend, I re-ordered and my new 15" MacBook Pro arrived this past weekend. Here's the specs:

• Processor: 2.8 GHz Intel Core 2 Duo
• Memory: 4 GB 1067 MHz DDR3

I also chose the solid-state drive (SSD) because I'd heard it's faster. I did some rough performance comparisons against my old laptop (a 2-year-old 17" MacBook Pro) and found it's quite a bit faster.

For these tests, the computers have exactly the same software and OS (I restored my new MBP from my old one). For the tests below, I used Java version "1.5.0_16" and had JAVA_OPTS set to the following:

-Xms512M -Xmx768M -XX:PermSize=256m -XX:MaxPermSize=512m -Djava.awt.headless=true -XX:+CMSClassUnloadingEnabled -XX:+CMSPermGenSweepingEnabled -XX:+UseConcMarkSweepGC. 

From these numbers, you can see that it's around 20% faster for building AppFuse (2.1-SNAPSHOT) and almost twice as fast at copying files and building the GWT project I'm working on. Needless to say, I'm impressed and pleased with my purchase.

Update: New MacBook Pros came out today with a faster CPU (2.93 GHz) and 256 GB SSD. I was able to call Apple and get a full refund on mine. Thanks Apple!

Comparing Web Frameworks Book

A publisher recently sent me an e-mail asking some advice. They received a proposal for a book that compares CakePHP, Symfony, Zend, TurboGears, Django, Struts, RoR. Here's a quote from the proposal:

We would like to compare a couple of frameworks and present their advantages and disadvantages in various applications.

Obviously, that kind of manual would be very useful for readers who are starting their 'adventures' with web applications, as it would facilitate their choosing the best framework for their particular application. The manuscript would offer a comparison of the most popular solutions (CakePHP, Symfony, Zend Framework, TurboGears, Django, Struts, Ruby on Rails) and demonstrate the main differences between each.

Therefore, the target audience would mainly be project managers, responsible for deciding on the technologies to be used for in-house projects, as well as less experienced, web application beginners.

Another purpose of the book would be to present 'good practices' in various frameworks, such as code re-factoring, design patterns and application security. From this point of view, it could become a valuable asset for experienced and learner programmers alike.

Since I got a lot of feedback from my tweet on this subject, I figured I'd ask it here.

What do you think of such a book?

Here's my response:

How do PHP books do these days? Of the list of frameworks (CakePHP, Symfony, Zend Framework, TurboGears, Django, Struts, Ruby on Rails), I think there's interest in Django and Rails, but not so much the others. And Struts sucks, so having that as a comparison is obviously going to make it look bad. I wouldn't buy it, but I'm a Java guy that's mostly interested in web frameworks that make developing SOFEA-based applications easier. In my mind, these are Flex and GWT.

The book I'd like to see would cover developing RESTful backends and SOFEA front-ends. RoR, Grails or Django could be used to develop the backend and Flex, GWT and X could be for the front-end. In reality, this is probably a tough book to write b/c things move so fast. If you decide to do it, I'd keep it short and sweet so you can get it to market and update it quickly.

Choosing an Ajax Framework

This past week, my colleagues and I have been researching Ajax Frameworks. We're working on a project that's following SOFEA-style architecture principles and we want the best framework for our needs. I'm writing this post to see 1) if you, the community, agree with our selection process and 2) to learn about your experiences with the frameworks we're evaluating. Below is the process we're following to make our choice.

1. Choose a short list of frameworks to prototype with.
2. Create an application prototype with each framework.
3. Document findings and create a matrix with important criteria.
4. Create presentation to summarize document.
5. Deliver document, presentation (with demos) and recommendation.

For #1, we chose Ext JS, Dojo, YUI and GWT because we feel these Ajax libraries offer the most UI widgets. We also considered Prototype/Scriptaculous, jQuery and MooTools, but decided against them because of their lack of UI widgets.

For #2, we time-boxed ourselves to 3 days of development. In addition to basic functionality, we added several features (i.e. edit in place, drag and drop, calendar widgets, transitions, charts, grid) that might be used in the production application. We all were able to complete most of the functionality of the application. Of course, there's still some code cleanup as well as styling to make each app look good for the demo. The nice thing about doing this is we're able to look at each others code and see how the same thing is done in each framework. None of us are experts in any of the frameworks, so it's possible we could do things better. However, I think it's good we all started somewhat green because it shows what's possible for someone relatively new to the frameworks.

For #3, we're creating a document with the following outline:

Introduction

Ajax Framework Candidates
(intro and explanation)

  Project Information
  (history)
  (license / cost)
  (number of committers)
  (support options)
  (mailing list traffic (nov/dec 2008))

Matrix and Notes

Conclusion

For the Matrix referenced in the outline above, we're using a table with weights and ranks:

Our strategy for filling in this matrix:

• Customer adjusts the weight for each criteria (removing/adding as needed) so all weights add up to 1.
• We rank each framework with 0, .5 or 1 where 0 = doesn't satisfy criteria, .5 = partially satisfies, 1 = satisfies.

The list of criteria provided to us by our client is as follows (in no particular order).

• Quality of Documentation/Tutorials/Self Help
• Browser support (most important browsers/versions based on web stats)
• Testability (esp. Selenium compatibility)
• Licensing
• Project health/adoption
• Performance
• Scalability
• Flexibility/extensibility
• Productivity (app dev, web dev)
• Richness of widget/component library
• Charting capability
• Ability to create new widgets
• Match to existing Java team skill-set
• Ease of deployment (on Ops, QA, Users)
• Degree of risk generally
• Ability to integrate with existing site (which includes Prototype)
• Easy to style with CSS
• Validation (esp. marking form elements invalid)
• Component Theme-ing/Decoration
• CDN Availability (i.e. Google's Ajax Libraries API or Ext CDN)

What do you think? How could this process be improved? Of course, if you have framework answers (0, .5 or 1) for our matrix, we'd love to hear your opinions.

2008 - A Year in Review

In 2005 and 2006, I did "A Year in Review" entries. 2007 was the year I got divorced, which probably motivated me to write a bit less. This year I'm back and ready to spend the next few hours writing, copying/pasting and linking like a madman. Hope you enjoy!

2008 was the year I traveled the world and developed a true passion for skiing. In January, my good friend Jason Miller moved back to Denver after quitting his job at Bear Stearns in NYC. We spent the first weekend in Nebraska working on Cletus's feedlot. The next week, my car stereo got stolen and I wondered if my bad knee would make it through the ski season (the good news is not only did I ski the rest of the season, but my knee healed itself over the summer).

At the end of January, the kids and I hiked to the top of Green Mountain and Don Brown made Maven not suck. Then I wondered if there was room for both Rails and Grails at a company and quickly learned both.

February started fantastically with a 14" Powder Day at Steamboat. I wondered if there is no "best" web framework and reviewed Grails and Rails books. After spending an awesome weekend in Tahoe, I took the kids on The Ski Train and learned more about Selenium at Google.

This brings us to one of my favorite posts of all time. On February 28th, Jack got a bead stuck in his nose. After taking him to the ER and paying $800, we found out magic recipe for bead removal is to "hold one nostril and give him a CPR-type breath/blow into his mouth". The reason I love the post so much is it's solved the problem for other frantic parents when they Google for "bead stuck in nose". Whenever I get a new comment, it always makes me smile.

March started out with a Powder Day at Whistler. I thoroughly enjoyed the rest of the weekend with good friends Jarvis and Korn Dog. After returning to Denver, I was allowed to blog about building a UI Frameworks Team at LinkedIn and posted my thoughts on Grails vs. Rails.

In mid-March, I achieved an all-Mac family and traveled to Lake Chelan for my sister's birthday. Shortly after, The AppFuse Primer was released. At the end of the month, I attended TSSJS in Vegas and moderated a Web Framework Smackdown.

In April, the LinkedIn Denver office opened and we all celebrated by attending the Rockie's Home Opener. The ski season came to an end and I wrote a howto for configuring Apache with mod_proxy and SSL on OS X. Then I discovered the JavaOne parties and wrote about running Spring MVC Web Applications in OSGi.

April ended with 82°F and May started with snow. I attended JavaOne (or at least the parties), released AppFuse 2.0.2 and figured out how to do extensionless URLs with the UrlRewriteFilter. The kids and I spent an afternoon in Rocky Mountain National Park and I did some coding in my backyard.

On Memorial Day, I enjoyed a liver-wrenching, Rockies-filled weekend with my sister her girlfriend Mya and Mr. Miller. I also contemplated making AppFuse Struts 2-specific.

June started with some mountain bike riding, planning some excellent vacations and getting a dream machine. I rode the annual trip to Big Head Todd at Red Rocks with Matt and Bruce. I took the kids on their first camping trip for Father's Day and had a blast. It took us several hours to find the campsite and my car kept starting all night long. It's sure to be a family tradition from now on.

The next weekend, I attended the American Craft Beer Fest in Boston. To end the month, I embarked upon Raible Road Trip #12 with Abbie, Jack and my Dad.

In July, the bus project began and I posted pictures of the trip to Montana. This year, I hope to spend the whole month of July at the cabin. I bought an iPhone (one of my best technology-related purchases to date). OSCON was fun but the week after wasn't.

August revealed my favorite birthday present. I didn't blog much the rest of the month, revealing why later.

Jack's Birthday Weekend was an outstandingly fun mixture of old friends and good Colorado beer. In September, I went to see the bus at MotorWorks, Abbie lost her first tooth and co-workers and I performance tested Memcached.

What followed was wonderful. Miller and I headed to Oktoberfest for the Best. Vacation. Ever. We still talk about how much fun we had on that vacation. October finished with the Colorado Software Summit and a hunting trip to the cabin.

November was a crazy month. I got laid off and celebrated Abbie's birthday on the same day. Jack got a mohawk and I traveled coast-to-coast in the same week. To close the month, I announced what's next and headed to Costa Rica.

I had a fantastic time in Costa Rica and was impressed to see Abbie is a blue skier shortly after. I did a Dojo/Comet Research Project for a week and enjoyed the location of my newest client last week. A small adventure turned into a scary adventure and I enjoyed telling my stories to fellow Java Enthusiasts in Portland.

Phew! It's been quite a year. For 2009, I'm still hoping for what I tweeted shortly after Costa Rica. I'd like to visit 3 foreign countries, take 3 months of vacation and spend 1 month in Montana. I have technology goals too, but those aren't nearly as much fun to dream about.

Happy New Year!

AppFuse Light converted to Maven modules, upgraded to Tapestry 5 and Stripes 1.5

This past week, I stayed up a couple of late nights to do some of the AppFuse Light work I wrote about in October. I converted all web frameworks to Maven modules, as well as made them inherit from the appfuse-web project. Below is what the new module structure looks like:

At this point, the project is ready to import into AppFuse's SVN project. Here's a list of other changes I made:

• Modules now depend on AppFuse's backend and allow you to use Hibernate, JPA or iBATIS as the persistence framework. Implementations for Spring JDBC, OJB and JDO have been removed.
• Upgraded to JWebUnit 2.1, which now uses HtmlUnit under the hood and has much better JavaScript support. It also has Selenium support, but I've yet to try it.
• Ajaxified Body integrated into all frameworks. You can easily turn it off by modifying the global.js file.
• Prototype and Scriptaculous loaded from Google's Ajax Libraries CDN.
• Upgraded to Tapestry 5. Mad props to Serge Eby and his tapestry5-appfuse project for showing me how to do this. Serge became a committer on AppFuse recently, so hopefully we'll continue to see great things from the Tapestry 5 support. I really like the clean URLs and minimum configuration required in Tapestry 5. It's testing framework is nice too, but I believe it could be improved.
• Upgraded to Stripes 1.5. This was easy and painless. I'm definitely a fan of Stripes and look forward to reading the Stripes book on my bookshelf.
• Dropped support for: Struts 1.x, WebWork, Spring MVC + Velocity.

If you want to try any of these applications, you can create archetypes using the following commands:

svn co https://appfuse-light.dev.java.net/svn/appfuse-light/trunk appfuse-light
cd appfuse-light/preferred-web-framework
mvn archetype:create-from-project
cd target/generated-sources/archetype
mvn install
cd ~/dev
mvn archetype:generate # The new archetype should show up as an option

Next steps include figuring out a way to flatten the inherited dependencies and plugins so archetype:create-from-project can create truly standalone projects. Please let me know if you have any questions.

What's Next

It's been three weeks since I joined the realm of the unemployed. Fortunately, I didn't stay unemployed for long. In fact, after writing the aforementioned post, I received 5 offers the next day. Of the opportunities I received, the most interesting ones were those from companies interested in hiring the whole team. Not only that, but LinkedIn hired me back as a contractor through the end of the year. The goal of the LinkedIn contract: finish up projects that my team had started in the previous months.

At the end of the first week after the LinkedIn layoffs, we all had individual opportunities, but we also had two team opportunities. The following week (last week), I flew to NYC to meet with one potential client while the other potential client flew to Denver to meet with the rest of the team. After flying to NYC, I traveled to Mountain View to do some on-site work at LinkedIn. At the end of the week, it seemed like most of the remaining tasks at LinkedIn could be done by someone else. I told them I thought it was best that I move onto other things, while staying available for support questions. On the way to the airport, I spoke with both our team opportunities. Following those conversations, I was very pumped about both projects and confident about pending offers. You can imagine my disappointment when my flight was delayed for 5 hours.

After a fun weekend with Abbie, Jack and friends, I woke up Monday morning without a job and it felt great. However, things changed quickly. Monday morning many opportunities landed in my inbox: a 3-day gig this week (helping write open-source training), a 1-week gig in December (evaluating how well Tapestry 5, Wicket and Struts 2 integrate with Dojo/Comet for a client in Europe), a 1-week training gig in Europe next year and a 3-month gig for the whole team. I accepted all these opportunities and am very happy I'll get to work with Jimbo, Country and Scotty again next year. The 3-month gig should be a lot of fun. We're helping build a SOFEA-based architecture that leverages appropriate client technologies (to be determined) to build a kick-ass web application. I look forward to talking about the technologies we use and things we learn along the way.

So the good news is I've entered The Golden Period. The Golden Period is when you don't have a job, but you do have a start date. Unemployment is absolutely blissful during this time. The Golden Period exists a couple times for me over the next 6 weeks.

I'll be traveling to Costa Rica tomorrow for a best friend's wedding. I'm leaving both my laptop and my iPhone at home. Next week, I'll be loving life with my parents in Costa Rica and Panama. The following week, I'll be working on AppFuse all week and hope to make great progress on developing 2.1. Then I have the 1-week Web Framework Analysis gig, followed by 2 weeks of vacation in Oregon. My Golden Period begins this afternoon (for 3 weeks) and happens again over Christmas (for 2 weeks).

Yeah, life is good. Damn good.

LinkedIn Cuts 10% (a.k.a. The Journey is Over)

This morning, my co-workers and I discovered that LinkedIn decided to trim 10% of its employees. The Denver Office was among those that were laid off. I can't say we didn't see the writing on the wall. In fact, on the evening of October 15, I sent the following e-mail to my co-workers:

LinkedIn's top investor[1] is Sequoia Capital and they recently posted this presentation on the web.

http://www.slideshare.net/eldon/sequoia-capital-on-startups-and-the-economic-downturn-presentation?type=powerpoint

Notice the reduce head count recommendations. ... Oh well, life goes on.

Raible

[1] http://www.linkedin.com/static?key=investors

So, as of today, there is no LinkedIn Denver office. While I had a lot of fun being a UI Architect and managing Engineers, I'm somewhat happy this has happened. After all, now I get to enjoy the best perk about being an employee: the good ol' severance package!

If you're looking for good Engineers, I highly recommend all of the guys who worked for me during this journey. You can read more about the skills they possess and what they're looking for by viewing their LinkedIn Profiles:

Scott Nicholls

Bryan Noll

James Goodwill

As for me, I'm definitely in the market as well. You can view My LinkedIn Profile to see if I might be a good fit for your organization. I'm willing to travel up to 25%, but would prefer not to. After all, ski season is right around the corner.

Lastly, I just wanted to say that I really enjoyed working at LinkedIn. I've never worked with a smarter group of Engineers, nor been so excited about a company's product and vision. I know that LinkedIn will be highly successful and I hope to use their site to find gigs for many years to come.

Happy Birthday Abbie!

Today marks the 6th anniversary of Abbie's birthday. Happy Birthday kiddo!

To see how Abbie has grown up over the years, see past Happy Birthday posts: #1, #3 and #4, #5. To celebrate, I'll be getting off early and having lunch with Abbie's class at school. After that, we'll be embarking on a Daddy/Daughter day where she gets to pick everything we do. I did this with Jack on his birthday and had a lot of fun.