Thursday, 18 June 2009

EPiServer-based site in 4 weeks?

I'm happy to share with you story of a EPiServer-based project that we have delivered a few weeks ago. I have been working on quite a few EPiServer projects but this one was special for number of reasons:
  • We had only four weeks to build the site.
  • EPiServer Composer was used to build almost whole functionality.
  • Extensive usage of Model-View-Presenter design pattern.
  • We have put into use idea which is getting more and more popular within Cognifide - Content First.
Let go though those main points in details ...


Four weeks deadline

Well, that was the biggest challenge, from the very first workshop with the client to the launch day we got only four weeks. Client provided initial designs, but actual PSDs were not ready yet. So we had to understand what client needs, build it and also give client a chance to enter actual content before the deadline. Avoiding incorrect assumptions and misunderstandings is always important but with time frame like this we knew that a single bigger misunderstanding will slow us down enough to miss the deadline. Therefore we decided to use following subset of SCRUM practices:
  • daily scrum meetings - everyday in the morning we were meeting and briefly talking about 1) progress which was made the day before, 2) about plans for given day and 3) about blockers. We considered something as blocker if something was stopping us from finishing the task. It could have been unclear requirement, lack of html template or simply tech problem (with EPiServer Composer for instance).
  • retrospective meetings after each iteration - we decided to have one week sprints as it was giving us 3-4 iterations and also 3-4 chances to stop for a while and think about improving our process. After each iteration we were also delivering the latest version to the client.
I think I can safely say that without daily meetings and retrospective delivering the site before the deadline would not be possible.


EPiServer Composer

Before that project we were mostly only playing with EPiServer Composer. Since the EPiServer Dev Summit 2008, when I had the chance to see X3 presentation, I always wanted to give it a try.
If you don't know anything about EPiServer Composer then check this video to get an idea how it can change the way you work with EPiServer:



What is my impression after this project?
  • It's great for small and medium sites, very intuitive, editors were able to understand it, learn it and use it very fast.
  • From developer's perspective impression is also positive. It's really great that we can build a function/component that is completely "standalone" and can be reused many times. Although, don't think that you can build for example single generic flash component and reuse it absolutely everywhere. If usability is your main objective then probably you are going to need more the one version of flash component. But still, I like to think about it this way: we can reuse generic flash component every time when it's needed to get something working quickly and then refine it if necessary.
Composer was sometimes giving us a hard time but now, when we know how to use it I will be happy to see more projects with Composer on board.


Model-View-Presenter

Another fairly new thing for us. We felt that separation of concerns which code behind files offer is not sufficient. In order to get loosely coupled architecture which is later easy to maintain we decided to use MVP design pattern. We don't have any hard, unbiased metrics which can prove it, but my feeling is that MVP gives much better separation, which affects things like:
  • much higher code reusability rate
  • much easier refactoring
  • because presentation logic is separated from controls it's much easier to spot common parts of code that should be extracted
  • presentation logic has no dependency on ASP.NET runtime therefore it can be unit tested (more on that in one of my old posts - TDD with EPiServer)
  • it's easier to catch what given module is doing, code readability is increased
Before that project MVP was an interesting design pattern for me, now I know that it works in practice. Try it once and you won't be able to live without it ;)


Content First

Content First is almost a buzz word within the Cognifide. But seriously, it really makes sense. In our case, it was a requirement to give editors a possibility to work with system before the final release. Editors needed about 2-3 weeks to check how EPiServer works, learn about provided by us functionality, think about content structure and finally for entering "production" content. We had to use Content First approach and work with editors in parallel. What are the implications?
  • Increased complexity - for a few reasons:
    • we were not working with test data therefore we had to think about backward compatibility or about upgrading content to make sure that it works with the latest code. There was no option like "forget about that component which we delivered last week and start using this new one ... by the way .. you need to recreate all pages that use old component".
    • additional environment to deal with - editors need separate server, you need to updated this server frequently. Lots of things can be automated here but there are always some upgrades (new properties, required configuration etc.) that will require your time.
    • editors will always find a way to break something, again, you have to deal with it.
  • Greater chance to deliver what is really needed - sometimes you can find important requirements only when working with real content, things like incorrect layout of some random components caused by too long title etc. Content itself might be an issue and while working on "Lorem ipsum" data you can't really discover this issues until the very last moment before the deadline.
  • Site is well tested - before the deadline site was checked by developers, testers and the client. Client has everything in place, level of confidence that system won't break in a last few moments before the deadline is high.
  • Dev team has more time to deliver whole functionality - because client can work with the system there is no need to deliver "final" release two or three weeks before going live and then praying for small number of critical bugs. Editors and developers can work in parallel which gives both sides additional time.
It was a cool project to work on, very dynamic, very agile and successful. It was also very busy time with a lot of pressure on us. But in the end we have learnt a lot and I think we all have a feeling that it was a decent achievement.

3 comments:

Mattias Nordgren (EPiServer) said...

Thank you for sharing your experience and idea's on how to work with projects such as this!

Stu Dean said...

I was in the project management role on the project in question.

We delivered an alpha release after sprint 1 that allowed the client to have all pages entered into episerver even before the final HTML was ready. Then during the next 2 sprints delivered additional content functions to allow them to build up the pages.

Without this approach our client would not have met the content deadline and we'd have surely hit the usual problems trying to fit "real" content into the system in place of the "lorem ispum" test data later rather than earlier.

Credit should also go to our client who opted to use a professional copywriter and had all content (complete with metatags etc..) signed off and ready to enter.

A good example of client editorial team and development team working together in parallel to deliver the end product.

Good job everyone.

Matt Nield said...

Great post and quite insightful, Thanks. Id' be interested to know how many guys you put on this to get an idea of actual time spent on the project without giving too much detail away.

(sub note: my captcha almost says porno :))