Wednesday, 12 April 2017

Micro Post: Big Glass of Sand

Monolithic architecture is classified as a Big Ball of Mud
Microservices architecture is therefore a Big Glass of Sand

I said it first , right here.

Tuesday, 7 March 2017

Testing, Testing, 1.2.3.4.5.6..ad infinitum

Before testing...

I've now been in development/engineering/coding/hacking or whatever you want to call it for more than 10 years.  Testing has always been important, but it  - in my line of work - is now at the forefront of everything I do.   

For the business this is great, every line of code, component and group of components is covered by some set of tests. Be it unit, integration, component...the overloaded terms go on.   This means that a set of requirements -  to some degree  - have been determined to have been met by these tests and the business is getting what it wants (all manner of development and agile practices not withstanding - they all get us to the same place)

It struck me today though that earlier in my career, when testing was still important but lines were  - perhaps - a little more blurred and things were a bit more hit and miss, things were less clinical, less contrived and quite frankly less boring.  This is obviously not a good model for delivering quality software everytime but sometimes I yearn to literally hack out some code,  build it  and just experiment when things aren't working quite right.  Yes this can be done guided by tests and within the confines of the TDD cycle but, for me, having not come from a TDD beginning, feels a little stifiling if I was developing a hobby project (not something I was contributing to on GIT) I, dare I say it, would not necessarily use TDD - but make no mistake, at this time, developing quality software for my employers I would not develop without TDD, it gives me confidence I never had in the past. Boring yes, Confidence inspiring yes.

This kind of work is left now for spiking  or hobby projects, but it feels that, and although this term is bandied around,  software engineering  really is coming of age. 

Engineering, Not art/craft 

I often hear that software development is a craft or an art and that it is creative - this may well be the case for UI related disciplines but business software is the geography teacher of practices, boring and wearing tweed.    Once all the requirements are down and how these are going to be met are sorted  - that's it. Software is being driven out in a very prescriptive manner.  The biggest debates that happen in my team are not religious wars about coding standards - we have static code analysis, not religious wars about performance - we have resources to burn,  not religious wars about  general designs issues we have SOLID (and other guiding design guidelines), but no - we have wars about how we are going to test something and where.  ATDD brings this war right to the inception of a story/feature (sorry I often get these the wrong way around) and then we have a list of work todo and a checklist to say when its done.   This is all very organised and delivers value,  but I'd never realised how boring this actually is when you break it down. 

Summary

This might sound negative,  and boring is generally not considered good, but it is a matter or perspective.  Boring is good, as  I said before, for the business.   Now, I enjoy going to work and doing a good job, but I am wondering what it is I actually like doing anymore, maybe I have become boring and that's what I now like.  That's what my Mrs thinks anyway...