This Blog Has Moved!

Right, so yes, five years ago I moved to github pages, and never bothered to redirect any of these pages there. Now I've moved on from there, and... Finally I am using my real domain, trishagee.com . My blog is now at trishagee.com/blog .  See you there!
Post a Comment

Featured on a BBC Podcast

This week's BBC Outriders podcast features yours truly venting about The Subject That Won't Go Away, Women in Technology.  I was interviewed at Sunday's Girl Geek conference, and got a chance to voice my opinions once again.  For those who can't be bothered to listen, they can probably be summarised as:

  • There are genuine problems that face people in our industry, let's talk about those that you have actually faced, not ones that you imagine exist.
  • In my opinion, now is a great time for women to make a name for themselves - conference organisers are crying out for you to attend and (if you want) speak, and our industry needs talented people of any type and isn't that fussy about who you are.
  • Please, please can we start talking about the good stuff that we see as women in IT?  We shouldn't only talk about the issues we face.  Yes, we need to highlight problems and address them, but I believe that this message is drowning out all the great things about what we do, and why we love our jobs.  We should be encouraging people (not just women) to join us, not putting them off.

Comments

Post a Comment

Comments have been disabled since this blog is no longer active.

Popular posts from this blog

Dissecting the Disruptor: What's so special about a ring buffer?

Image
Recently we open sourced the LMAX Disruptor , the key to what makes our exchange so fast.  Why did we open source it?  Well, we've realised that conventional wisdom around high performance programming is... a bit wrong. We've come up with a better, faster way to share data between threads, and it would be selfish not to share it with the world.  Plus it makes us look dead clever. On the site you can download a technical article explaining what the Disruptor is and why it's so clever and fast.  I even get a writing credit on it, which is gratifying when all I really did is insert commas and re-phrase sentences I didn't understand. However I find the whole thing a bit much to digest all at once, so I'm going to explain it in smaller pieces, as suits my  NADD audience. First up - the ring buffer.  Initially I was under the impression the Disruptor was just the ring buffer.  But I've come to realise that while this data structure is at the hea...
Read more

Dissecting the Disruptor: Writing to the ring buffer

Image
This is the missing piece in the end-to-end view of the Disruptor.  Brace yourselves, it's quite long.  But I decided to keep it in a single blog so you could have the context in one place. The important areas are: not wrapping the ring; informing the consumers; batching for producers; and how multiple producers work. ProducerBarriers The Disruptor code has interfaces and helper classes for the Consumer s, but there's no interface for your producer, the thing that writes to the ring buffer.  That's because nothing else needs to access your producer, only you need to know about it.  However, like the consuming side, a ProducerBarrier is created by the ring buffer and your producer will use this to write to it. Writing to the ring buffer involves a two-phase commit.  First, your producer has to claim the next slot on the buffer.  Then, when the producer has finished writing to the slot, it will call commit on the ProducerBarrier . So let's look at...
Read more

Dissecting the Disruptor: How do I read from the ring buffer?

Image
The next in the series of understanding the Disruptor pattern developed at LMAX . After the last post we all understand ring buffers and how awesome they are.  Unfortunately for you, I have not said anything about how to actually populate them or read from them when you're using the Disruptor. ConsumerBarriers and Consumers I'm going to approach this slightly backwards, because it's probably easier to understand in the long run.  Assuming that some magic has populated it: how do you read something from the ring buffer? (OK, I'm starting to regret using Paint/ Gimp .  Although it's an excellent excuse to purchase a graphics tablet if I do continue down this road.  Also UML gurus are probably cursing my name right now.) Your Consumer is the thread that wants to get something off the buffer.  It has access to a ConsumerBarrier , which is created by the RingBuffer and interacts with it on behalf of the Consumer .  While the ring buffer obviously n...
Read more