Tag Archives: microservices

Microservices – recent and upcoming events roundup

The last year or so has seen a surge in interest in microservices and so I’ve ended up contributing to a couple of podcasts on the subject and was also invited to air my thoughts by the BBC Academy after speaking at their annual internal BBC::Develop conference.  All good stuff. The links are here:

BBC Academy

Short (~15 mins) featuring myself, Russ Miles and Rachel Evans interviewed on microservices. (It’s me! On the BBC!)

http://www.bbc.co.uk/academy/technology/article/art20150108152505124

Software Engineering Radio podcast #213

This is an hour long podcast from SERadio of an interview I gave last summer. It’s interesting because the longer format gives myself and Johannes time to explore some ideas in more depth than is perhaps usual.

http://www.se-radio.net/2014/10/episode-213-james-lewis-on-microservices/

There is a transcript of parts of the interview in the January/February 2015 issue of the IEEE software magazine. Link coming soon

.NET Rocks! #917

A little older but another hour long podcast from the awesome dudes at .NET Rocks where myself and Matt Collinge  from Compare the Market talk about organisational change, microservices and CQRS.

http://www.dotnetrocks.com/default.aspx?showNum=917

What’s next?

It’s looking like a really busy first half of the year (and of course I’m also working with our clients during this period too):

BCS Edinburgh – 4th February 2015, 6:30 pm

I’m speaking at the local BCS branch on microservices and the “one true way”.

http://www.edinburgh.bcs.org/events/2015/140205.htm

Microservices Exchange, Berlin. 12/13 Feb 2015

Speaking on polyglot programmes at the microservices exchange conference in Berlin. This should be really fun and features lead thinkers in the field. Adrian Cockcroft will be there as well as former colleague Fred George (who arguable coined the term) and current colleague Sam Newman.

http://microxchg.io/

QCon, London. 2-6 March.

Lots happening at Qcon this year. I am a track host for the “taming microservices” track. We have Dan North, Phil Wills, Todd Montgomery and Phil Calcado (with one more to confirm) speaking on testing, design, protocols and operationalising microservices. I’m really excited about this as I really respect the speakers I’ve managed to get to talk for us. (And Todd is ex-NASA, how cool is that!).

http://qconlondon.com/track/taming-microservices

I am also running my and Sam Newman’s tutorial on design and implementation of microservices:

http://qconlondon.com/tutorial/design-implementation-microservices

Craft 2015, Budapest. 22-24 April.

I’m running the microservices tutorial again in Budapest at Craft. Again, excited about going since I’ve heard great things about the conference but never been before.

http://craft-conf.com/2015

GOTO Chicago, 11-12 May, 

I’m speaking on microservices in chicago at the GOTO conference. these are still my favourite conferences as an attendee and as a speaker. Thanks for the invite!

http://gotocon.com/chicago-2015/

I T.A.K.E Unconference, Bucharest. 28-29 May

I’m giving a keynote at this great unconference in Rumania in May. Details of this are still be worked out but I’m really looking forward to visiting.

http://2015.itakeunconf.com/

GOTO Amsterdam, 17-19 June

I’ll be in Amsterdam at another GOTO event. First time visiting this one so pretty excited (and obviously thrilled to be asked).

http://gotocon.com/amsterdam-2015/

It’s looking like a busy 6 months indeed.

How big should a micro-service be?

SRP and my Head

Many years ago, whilst working at an Investment Bank with a number of ThoughtWorks colleagues, we were thinking about how big objects should be. Obviously as developers we were thinking in terms of the Single Responsibility Principle, Open-Closed Principle and Separation of Concerns.

I came up with a simple heuristic. Simply stated, an object should be no bigger than the size of my head when pressed up against the monitor – basically a screenful of code. Now, I have a fairly big head (but thats ok, cos there ain’t much inside it) so your mileage may vary.

The reason I bring this up is because I’ve been speaking at a few conferences recently on the topic of Micro Services, and the following question is often asked:

“How big should an application be?”
Continue reading How big should a micro-service be?