Paul Graham – Beating the averages

Recently, having been prodded sufficiently by fellow enthusiasts, I’d been looking into the rationale behind Clojure amidst the ongoing explosion of dynamic languages on the jvm. And while I was looking into that, somehow, I came across numerous sites linking to the essay by Paul Graham – Beating the averages. Today I finished reading it and I have to say it was a fascinating, captivating and thought provoking read. Paul Graham is an adept writer. Yes I’m late to this scene. I’ve never really paid much attention to his essays in the past but I guess I’m finding myself going back in time in some ways now.

Also being one of the most persuasive pieces of prose speaking in favour of a language I’ve ever read – it made me incredibly curious about Lisp of which Clojure is a derivative. I think, at this stage, simply as a result of having read that post, there is a real danger of me looking into Lisp along the way which, if nothing else, should at least give me some insight into why the jvm developers Joe Darcy, John Rose and Mark Reinhold have been so enamoured with it and why they take so much inspiration from it.

The Java 7 launch party videos also made numerous mentions of Scala and Clojure which you watch if you haven’t already. The Q&A video at the end is the one I’m referring to here but I’d recommend watching them all in order. Anyway, you should read Paul Graham’s essay simply to provoke thought if for no other reason.

If you’re an avid Paul Graham follower which essay is your favourite that you’d recommend?

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LMAX disruptor framework and whitepaper

This is really old news now as I’m very late in posting it but since I’m still coming across people who have remained blissfully unaware I thought this was worth re-iterating. If you haven’t come across this yet drop everything else and read about the LMAX Disruptor framework and the associated whitepaper titled Disruptor: High performance alternative to bounded queues for exchanging data between concurrent threads. There is also an associated (and rather dated now) infoq presentation titled How to Do 100K TPS at Less than 1ms Latency.

In the beginning there was a main thread of execution, then came two and then thousands. Once we had scaled to starvation with threads came SEDA and the concept of queues, hierarchical topologies of queues and lots of writers and readers operating on queues with threads now relegated to second class citizen status. For a while the industry rested in the assurance that it had achieved equilibrium with innovation on latency. Then – out of the blue LMAX happened. LMAX (London Multi Asset eXchange) are the highest performance financial exchange in the world.

Read the whitepaper to find out just how outdated conventional wisdom on concurrent queuing in Java actually is and how a lack of awareness of how your financial code performs end-to-end hardware to VM could be created bottlenecks for your platform. The essence of the disruptor framework is a strikingly simple concept but at the same time profound not only in its effectiveness in attaining its goal – reducing latency – but also in the extent to which it leverages knowledge of hardware and the java virtual machine that it runs on.

It proves wrong beyond doubt the rather outdated mindset that questions employing Java for financial low latency use cases. Ever since Java 5 and particularly Java 6 – the JVM has dwarfed the Java language in its importance, capabilities and scope and as a result utilising Java is now fundamentally synonymous with utilising the JVM which is what makes the language so compelling.

It isn’t about the code that you write. It’s about the code that’s interpreted and then runs natively. It is naive to consider only the language as many seem to be doing in the light of the imminent release of Java 7. It’s important to bear in mind that whilst language sugar is important if runtime matters to you then you’ll want to focus on: (1) the VM (2) writing wholly non-idiomatic Java and (3) opposing conventional wisdom at every level of abstraction every step of the way.

WWDC June 2011 expectations

Bloomberg has quite tastefully summarised our expectations of what Steve Jobs is likely to announce at this year’s WWDC conference on 6th June. We’ve all become so accustomed to hardware revolutions every 12 months that it comes as a massive heartfelt let down that no such hardware announcements are expected this time around. A new iPad was released earlier this year and a new iPhone is not expected to be announced until Winter this year.

So what can we expect this month? A new iCloud service is probably the most intriguing of rumors due to novelty factor whereby Apple will allow storage of music on the cloud as opposed to the local hard drive. It sounds interesting and certainly has the advantage of removing the need for the tedious backup process. However it also increases reliance on the internet which is generally very poorly featured in the UK in both mobile and terrestrial forms and non-existent on the London tubes. Though Apple pushing forward the performance boundaries of telecommunication networks has and can only continue to be a good thing.

However any investment in cloud technology must at this point be innovative and compelling in ways that currently are inconceivable simply due to the sheer abundance of cloud technology that has come to be over the years and the shameless exploitation of cloud terminology strewn across the internet. Microsoft’s blatant billboards and posters about cloud computing in London tube stations certainly didn’t help as it simply wasn’t clear what they were selling. Yes I know your stuff is on the cloud but so is mine. So is everyone and everything out there. It’s called the internet. At this point I’m so overwhelmed by the sheer quantity of cloud news in the last few years that I’m almost not receptive to anything further in this domain.

The next most exciting piece of news is expected to be about the next version of iOS and Mac OS X (codenamed Lion). Given how long we go between software updates from certain vendors examples being Microsoft and Sun – Apple customers are spoilt in this sense. iOS 5 is rumored to have a new widget mechanism and a new notifications feature and documentation on Lion has been available for quite some time now.

It’ll be interesting to see how Apple approaches the threat of increased competition from upcoming Mango and increasing market share acquisition by Android through both its cloud services and iOS upgrades. Regarding the new handset in September my wishlist would be to make the sim card even smaller, incorporate hardware NFC for mobile payments, increase battery life by making the battery even bigger in capacity and through support of 4G place even greater strain on the UK networks. That’s my rant over. Thank you for listening.

Foreign exchange hiring and trading rising

Foreign exchange hiring and trading are reported to be rising. Efinancial careers reports on hiring that:

… a lot of the current opportunities are within the more established FX houses. BarCap is hiring Java and C++ developers for its 250-strong FX IT team, Citi has openings for developers and connectivity specialists for its front office FX IT division, while Morgan Stanley and Credit Suisse are both recruiting techies for their Matrix and Merlin platforms respectively.

Bloomberg says on fx trading that:

[It] rose last year, with the value of transactions handled by CLS Bank, the New York-based operator of the largest currency-settlement system, jumping 22 percent to an average $4.1 trillion a day. Currency markets climbed to record highs for average daily trading volume in the U.K. and North America, according to central bank reports … and … electronic trading volumes increased 25 percent from the previous year, according to the Euromoney survey, to account for 56 percent of all foreign-exchange business.

It seems like FX is a good asset class to bet on right now and an ever more competitive space.

Microsoft Mango: Windows Phone 7 Previewed

BBC has provided a preview of Microsoft Mango, the new Windows Phone 7 mobile operating system, adopted by Nokia to replace their aging and rendered obsolete Symbian operating system. It certainly looks like a worthy competitor to iOS and Android with the usual incorporations such as threaded conversations, unified inboxes, social networking support and seamless integration between various different aspects of functionality. It tries, however, in addition to go a few steps further with many of these features. The UI is pleasing to the eye being lean, simple and calm in its colour scheme. Flash is only partially supported which in effect will mean that the default browser probably won’t work on the majority of flash websites but this is no different to iOS for the time being.

Nokia certainly need the assurance of revival that Mango offers and I would say it’s a positive move for them. For Microsoft I think the Nokia deal has added the essential, previously lacking, momentum to take this project to production. Microsoft just have to make sure that they keep the operating system stable (like Symbian was) and that they learn valuable lessons from the successes of iOS and Android since they are following in their footsteps. It’s great to see aggressive competition in the field of mobile operating systems and I’m certainly looking forward to Mango going live to see how they push the boundaries of what currently exists.

I wonder what the next generational leap can be for all parties concerned. Near field communication is one that comes to mind which Google is going to market with very soon. Mobile Money is also kicking off with the joint initiative between Barclays and Orange. It’s also interesting to consider how phones will adapt to upcoming 4G. There will I think always be a trend towards improving hardware whilst improving also the battery life of devices. What more would you like to have with your phone?