Posts Tagged ‘Subversion’

XP-Dev.com : Another milestone

Sunday, March 1st, 2009

So, it has been 3 months and a bit since the upgrade to the new platform that runs the current version of XP-Dev.com, and it has been eventful. There was the release that took a whole day, and then were some functional releases as well. The latest release bring some really cool features to XP-Dev.com.

Another milestone has been reached, and the functionality gap has been narrowing drastically the past 3 months. However, I will be brave enough to admit that the gap is still there, and at least for me, there’s still a mountain to climb ahead.

Enjoy the new releases, and as usual, your feedback is appreciated. Do give a shout in the forums, or just raise a support ticket. You can contact me via this blog as well.

New XP-Dev.com (finally!) Released

Tuesday, November 18th, 2008

Folks, there’s a new version of XP-Dev.com out. This release features a new platform (which I will blog about soon!) and some key features that everyone has been asking for profusely, namely:

  • Subversion imports and exports (tons, upon tons of users have asked for this)
  • Allowing anonymous (public repositories) checkouts
  • Multiuser project and task management (tons of users have asked for this)

There are some obvious bug which I will sort out in the next few days. However, under the new platform, extending and adding more features to XP-Dev.com will be a breeze (and unit tested of course)! There is a whole lineup of features coming up, and will keep everyone posted about it. These are exciting times for XP-Dev.com and we really appreciate all the support that’s been given to us.

I personally would love to see XP-Dev.com being the best agile tool out there, and we’ll get there!

If you’re a current user, give it a whirl – any feedback will be great – good and bad!

If you’re a new user – register now and see what it can do to improve your development deliveries.

Free Subversion Hosting

Saturday, November 1st, 2008

Many people over the past few months, have been asking the same questions over and over again about the services over at XP-Dev.com. I don’t mind answering them with the same answers, but I think it is time to put all of these questions into one place and discuss them.

Why are you offering Subversion Hosting for free ? Is it too good to be true ?

Let me set something straight:

I offer it free because I really do not believe that anyone should pay for something so simple to setup and run as Subversion.

Here is the reality: I setup Apache using mod_svn, mod_dav, mod_ssl and mod_auth_mysql once. Believe me: only once and never ever ever ever (ever!) touched it again. No, I am not kidding – only once! No tinkering needed, it just runs like Forrest Gump (no pun intended to all you Gump fans out there).

It does cost $$$ to host it, including my time to add more features to it. Disk space and bandwidth is getting cheaper. They are not free, but then again, if you average it across the number of users that I have on XP-Dev.com, the figure looks really, really small. It is a cost nonetheless, which I’ll try to cover below.

So, we’ve established it does cost money, how are you covering these costs ? Are you really rich ?

OK. I wish I was rich, but the truth is – I am not. I could claim I was rich and lie to you all, but then I would not get any glory every time I look at my monthly bank statements.

So, where does the money come from to pay for the services ? Well, at the moment, I am paying for it. But I won’t be doing this forever.

I have got a few models to generate revenue and these models will be implemented in the next few months. I can’t reveal them to the public just yet, but rest assured that the usage of Subversion and project tracking on XP-Dev.com will always remain free. This is how I started and envisaged XP-Dev.com, and that is how it will always be.

Free Subversion Hosting and Project Tracking on XP-Dev.com is a life-time guarantee.

You’re offering a free service. There’s a catch to it, right ? Are you selling our code to someone else ?

No. Nada. No catch. I am not a petty code trader. I don’t go around knocking on other peoples doors saying “PHP codez $4 per line! .. $3.50 per line! .. $3.40 per line! ..”. I could not even be the least bothered about what everyone else is coding. I have my own ideas to push forward and materialise (one of them is XP-Dev.com, there are a lot more in the pipeline).

So, your code is safe on our servers. No one else other than the ones you have permissioned are looking at your repositories. We do have backups that run every night and copied over off-site, but they are all encrypted before leaving the server.

I put all my code on XP-Dev.com. I am a consumer of my own service. I believe that anyone who offers a service should always be their own users/clients/customers. You should see your service from the customers point of view.

If someone else looked at my code and data, I’d be really worried. I respect that tremendously and try my very best to lock down the server.

What you see is what you get – WYSIWYG. There are no catches at all. Your code and data are safe. We have a “no prying eyes” and “mind your own business” policy.

OK. So it is a genuine service that is FREE with no strings attached. Then I suppose it will have to be an overloaded, slow service ?

Never! This is one of the things that come out from being a consumer of your own service. If the services do get slow, there’s going to be one really noisy, angry, verbal user – me. And I’m really scared of him.

On a serious note, I’d be disappointed with myself if the service ever comes to a unacceptable quality. At the moment it’s fast and quick and I intend on keeping it that way. If it every becomes slow, I’ll be there in front of the queue shouting.

I’m not too sure if this is a good thing, or a bad thing – I’ve only ever worked in the Front Office for Investment Banks building real-time (well, its near real-time) trading and pricing system. They are all high performance scalable systems. The systems I work on can cost a trader anywhere between $100,000 to $500,000 if latency went up a nudge above 10ms (yes, that’s milliseconds!). XP-Dev.com is a testament of my experience building & architecting these crazy systems (trust me, they are crazy!).  If performance degrades, it will be a major failure on my part and I’m a really proud person :) .

It is a great service. How can I help ?

This reply is a cliche. There are a few ways you can help.

If you are not a user, register now!

If you are a user, and have any problems, queries or just want to say thank you, then please tell me, or email admin@xp-dev.com. Every single non-spam email that goes there gets a reply. If you don’t get a reply in a few hours, then it’s probably SpamAssassin acting up. You should use this form instead.

If you are a user, or not even one just yet – you can help by telling your friends, mom, dad, brothers, sisters, relatives, neighbours, cats, dogs, fish and everyone else about XP-Dev.com. Digg it, Buzz it, Reddit. Do whatever. Just keep spreading the word. I really appreciate it.

If you have any other questions or concerns, please post them as comments to this blog entry, or do contact me directly.

Subversion Hosting

Wednesday, March 12th, 2008

Something I’ve always wanted to do – offer Subversion hosting, and for free. Why free you may ask? Well, in my opinion, comoditised things like Subversion (or any other version control) hosting should never, ever be charged for. Version control is something that everyone should use, and while the barriers to entry are getting lower (in the sense that the client tools are getting easier to use, and the concepts of version control getting easier to understand) every year, we still find that it is only being used by:

  • People who truly believe in it
  • Folks in the software industry – let it be developers, managers, or any member of your QA team (the examples carry on, but I’ll stop here)

I probably would categorise myself at 60% on the first, and 40% on the second. Case in point – I really do put everything under version control – right from the most obvious things, like source code, to the not so obvious things like images, documents / reports and server config files. Ever since Subversion came out and offered binary file handling that actually works, I’ve been finding more and more interesting ways of using it.

Sadly, your average Joe will still be saving backups of their thesis on a thumb drive, and risk either deleting the thing, or potentially just loosing the thumb drive entirely. Or when they do end up making a mistake in the content (for e.g. rewriting a whole chapter), its just going to make them even more upset as they can’t roll it back to how it was before they rewrote it. Here is where I think version control is really useful and powerful – as long as Joe is in the habit of saving his work often. Tracking changes (comparing and reverting them) is such an easy task if the document was put under version control from the beginning.

Coming back to the hosting, I’ve offered this via XP-Dev.com, and it should be really easy to startup – just create a user account, login and start creating your repositories. Moreover it has virtually no space limits.

Give it a go, and as usual, if there’s anything you’d like to see, do just drop a note!

Task and project management

Tuesday, February 26th, 2008

I’ve always found myself in the situation where I need to keep track of the list of things to do (or plan to do), especially when it comes to developing systems and managing projects. The problem is that there aren’t any tools out there that is simple enough to use, where the process of tracking does not become a significant overhead. I really liked XPlanner, but the problem it is that it’s trying to satisfy way too many people and the process of project planning/tracking can sometimes really be an overhead, especially when it comes to managing the stories and tasks.

The way I like to think of a project is that it is defined as a set of stories, and each story is defined as a set of tasks. To track a project, and ensure that you can meet your deadlines and delivery dates, the estimates (metric should always be in no. of hours!) should really be assigned at the task level – NOT at the story level. Stories should be best described as an atomic user case in a system, and the underlying tasks should define the implementation of the story. Think of it this way – a story is a plan/proposal and the tasks actually get you there.

So, ideally for me, a project planning tool should capture these fundamentals:

  • Each project has a set of stories
  • Each story has a set of tasks
  • Each task should have an estimate no. of hours
  • Each developer adds hours spent to a task
  • Each iteration should be defined as a set of stories (from any project)
  • Managing the above should be as simple as possible, and not an overhead to the actual development of the project

The are other nice things to know: for e.g. reports that tell you how far along you are in a project/story (and whether you’ll have to tuck your tail between your legs to senior management in the weekly review). But I’ll get back to this later.

XPlanner is the closes tool out there that manages to get most things right. However, it can be a little clunky when you actually get down to managing tasks and story. I used it about a year back and maybe it has moved on. The clunky interface is actually a burden on the developer. I was working on a pretty high profile project in my bank when I was using XPlanner, and I found that the developers were spending more time surfing through the tool, trying to look for one single feature (for e.g. adding hours to a task), rather than developing. Now, this is an investment bank, where 3 developers wasting 20 minutes each a day is a big major NO NO practice. Every minute counts! So, XPlanner was not ideal for me.

Coming back to project management. Let me reiterate the traditional constraints: scope, quality, time and cost. Very important to always keep this in mind when running any project. I have found that many project managers are actually missing these fundamentals when pushing for projects to meet deadlines and not reporting back to management/clients on these. There will be times where the clients are really impatient, and won’t really understand the constraints. But generally, most of them do understand it and will decide on which of the fundamentals they would like to have delivered (Funnily enough, I’ve found that at times quality is not one of the fundamentals in Investment Banking. However time is almost always one of that clients would like delivered).

From my experience in the past, you can at most keep 2 or even 3 of the fundamentals at any one time, and your tool that you use for managing projects should relay this information to you as clearly as possible. The problem here is that I have yet to find a tool out there that can do this seamlessly.

The other issue that I noticed is that the development team that I used to manage always worked on multiple projects. No matter what period of the year it was, there was always 2 to 3 concurrent projects running for a team of 5-6 developers. This is a constraint that I have seen in many project management tools out there. They tend to defined an iteration based on a project. So, project A will have a current iteration and you can add stories A1, A2 and A3 to it and kick off the iteration. This never worked for me, at work and on my own personal projects. I needed a tool that I could arbitrarily define an iteration as a delivery target for a number of projects and systems (time constraint). In each one of these iterations, we will deliver some functionality/fixes (scope constraint) given the current resource levels (cost constraint). So, what does this really mean ? Say, I had a release cycle of every 2 weeks. Within those 2 weeks I really need to convey to all the business lines that I can deliver parts of project A and B. Within those 2 weeks, I will get out functionally defined by stories A1, A2, B1, B2 and B3. I kick off the iteration and keep track on how they are progressing. There will be ongoing risks that I will convey back to the clients. My tool will tell me how much work is outstanding, and I can then give early warnings to the business that we need to readjust our constraints. Sound simple enough ? Again, no tool.

Long and short of it – I decided to write my own project tracking tool. I’ve put it up on XP-Dev.com. Its currently only single user: i.e. if you’re in a team, then you can’t really collaborate with each other on the projects. Its a little rusty here and there, but it does what it says on the tin. At any one point, I can see where I stand on all my outstanding work and projects.

I use it extensively for my personal projects and seems to work pretty good. The one thing I really liked about XPlanner (and I’ve shamelessly copied) is the task list. At any one point I can see the tasks that are outstanding to me from all projects and keep knocking them one by one off the list. This is follows the Getting Things Done time management (Next Actions list).

Give it a go, and if you have any requests, please do contact me and I’ll ensure that it gets done.