Colin Charles Agenda

Program in Java? Want to be challenged? Want to work in a startup-styled environment, yet be happy, knowing that the company itself isn’t a startup (i.e. its backed by over a decade of work, and cashflow)? Well, they are looking for a Senior Software Engineer/Tech Lead and some Software Engineers, to all create an application for enterprise use. The requirements are here (in PDF), the salary is expected to be high (i.e. 15% higher than average Malaysian rates. at least — so think of a payrise!), and I’m happy to forward resumes over to the company, so drop me an email (with your resume) at byte@bytebot.net and tell me why you’d be a great fit.

Ready for a challenge?

Note: Company is based in Malaysia, so at this stage, I’m told, only Malaysians or those that have work permits for Malaysia, need apply.

In a fit of irony, its worth nothing that StarOffice has been dropped from the Google Pack while the Java Runtime Environment will now include the Microsoft Live Search Powered Toolbar on Windows.

I always tell people who use Windows to download the Google Pack. Maybe they would include OpenOffice.org 3.0? I’ve been a user of Google Docs recently, and there’s still something about OOo that makes it just that notch better. The other news though? Its days like this that I’m glad I don’t run on the Microsoft Windows platform.

At the MySQL Conference & Expo 2008, Britt Crawford and Justin McCarthy, both from Cafepress.com, gave us a very interesting talk on scaling with HiveDB. I took a few notes (pasted below), their slides are online (warning: 6.1MB PDF), and if you’re after their abstract its available as well.

I also took a video of them (refer to Slide 12, for the IRC conversation):

The quick notes:

• OLTP optimised (as it serves cafepress.com)
• Cannot lock tables, or take it offline
• Constant response time is more important than low latency (little slower query is ok, just not exponentially slower)
• Queries run might return wildly sized result sets.
• There can be growth and usage hotspots. You cannot predict this at all.
• Partition by key (the set of all partition keys is the partition dimension)
• Partitioned Hibernate from Google (Hibernate Shards). HiveDB is now married up with shards.
• Thought about MySQL Proxy to support high availability components, but it was dismissed

Presented by Ronan McBrien and Sourath Roy, both from Sun Microsystems. The highlight of the show for me? Seeing the Sun Media Receiver. Not much information about it, except from the Sun Labs Open Day.

• Sun Media Receiver (developed at Sun Labs, now maintained by ISV Engineering). Sun make a PVR? Cool.
• RISC Processor (150-300MHz, predominantly MIPS, some ARM), memory, HDD optional, Ethernet port, USB, IR (remote control), Video output (SD, S-Video, composite, or HD, via HDMI connectors), hardware codecs (MPEG2, MPEG4-2, H.264)
• Makes use of the Java Media Framework API
• Can also expose talking to a SIM/smart card through the Java APIs, for security in your IPTV hardware

Presented by Jonathan Haslam, Simon Ritter, Sun Microsystems

In what I thought was completely great showmanship between Jonathan Haslam and Simon ritter, it was simply, pure comedy, having the two of them on stage. No reason to go deeply into notes (as the verbose slides are available), but the actual demonstration, the writing the code on stage, and the dynamics between the two – that made this session pure gold to attend.

You can ask a system to panic with DTrace if you want!

Some terminology:

• Probe: place of interest in the system where we can make observations
• Provider: instruments a particular area of a system, and makes probes available. Transfers control into DTrace framework when an enabled probe is hit
• Aggregation: patterns are more interesting than individual datum, so aggregate data together to look for arrays. Generally an associative array

DTrace has a PID provider, to look at applications based on PID

dvm provider is a java.net project to add DTrace support in. Install a new shared library, and make sure its in the path.

DTrace in JDK6 exists as a hotspot provider. No need to download a shared library. Its also more feature-rich.

Project DAVE (DTrace Advanced Visualisation Environment) was demoed. Also note that there’s chime.

First up, I want to say, I’m truly impressed with Brazil. One day I will visit this amazing place, and spread the good word of open source with projects that are close to my heart: MySQL, OpenOffice.org, Fedora, and in due time, a lot more. This is a live-blog, from a most interesting talk, at JavaOne 2008. As I wrote on Twitter, “Brazil, simply impresses me. Their use of open source in government, makes me think that the rest of the world has a lot to learn from them”.

Free and Open Source Software: Use and Production by the Brazilian Government
Rogerio Santana <rogerio.santanna@planejamento.gov.br> +55 61 313 1400, Logistics and Information Technology Secretariat
Planning, Budget and Management Ministry
Brazilian Government

Households with Internet access: 70% in the US4k household income range. 70% of households have mobile phones (even when total revenue is USD$2k). Middle and upper class are all, generally on the Internet.

In 2007, 98% of Income Tax has been sent by the Internet. By 2009, there’s only going to be use of a Java application for this. About 17.5 million people filed via the Internet. Impressive.

Brazil has 142k public schools – 26k are connected to the Internet now (18%), and 92% are connected at low speed, while 8% have 512kbps connections.

Plan? Free Internet for schools, from 2008-2025. 1mbps for each connection, growth plans in the next 3 years.

There exists Computer Reconditioning Centres (CRCs) for recycling PCs.

www.eping.e.gov.br (e-PING: e-Government Interoperability Standards)
www.governoelectronico.gov.br (e-MAG: e-Government Accessibility Model)

Brazil has been using electronic voting since 1995. 136.8 million people voted in 2006 election. Next version of vote machines will use GNU/Linux!

Open Standards. Interoperability. Free Software. Free License. Community.

e-PING: uses XML, browser compliant, they have metadata standards

Many organisations of the Brazilian Government use Java as a primary development platform. Remember, Java is important because its the first that allowed even Linux users to interact with government applications.

Brazilian Digital Television? Middle-ware responsible for the interactive process of digital TV also developed in Java. (Ginga is the name of the application).

In education? Enrolment is done via the Internet for universities. e-Proinfo is an e-learning project that has already trained 50k students.

Developing clusters and grids, with focus on high availability, load balancing, database replication, distributed mass storage, and virtualization. The government is backing this, since 2006.

Talk was given by Jaana Majakangas, from Nokia Corporation. I’ve been interested in NFC ever since I heard about it, as its something Maxis has been trialling for a while in Malaysia. It reminds me of rewinding back many years (maybe a decade ago?) when Celcom was trying to allow people to purchase a Coke from select vending machines, using SMS (no cash!). That never took off, but maybe NFC will be right, soon… Current limitation? Lack of devices – one in market (Nokia 6131) and another announced, but not in market. Also, the standard (JSR 257) has been extended by Nokia, which is always an issue for other implementers.

Some quick notes:

• JSR 257 is what this is all about.
• Simple wireless protocol between NFC compliant tags and devices in close proximity. New business opportunities for mobile operators, banks, retailers, transport operators, etc.
• You can share content between phones/pair devices like Bluetooth. You can get further information by “touching” smart posters. Your phone can be your credit card for payment… it can also be your travel card.
• Service discovery. Nokia has got extensions to the JSR 257 standard for this in their implementations.
• Think outside of the box, be innovative, the technology is there, there are many use cases
• Contactless communication API has been around since 2004. RFID tag, smart card, visual tags. Java applications to access the hardware capabilities (RFID for instance).
  - NDEF tag (RFID tag, with NFC standard)
• There is a dedicated Connection interface for different targets. You will get a notification when a transaction has happened.
• When you discover a target, the application will get a notification. It has the URL that you will open the connection with. Communicate… then close connection.
• Nokia 6131 NFC has extensions to JSR 257: get the SDK at Forum Nokia. The extension also includes the peer-to-peer communication framework. In a modified version of JSR 257, the P2P communication will exist soon as well.
• Business cards that go to NFC devices and contact details are there? Wow, this is Business Card 2.0 :)
• NFC works within less than 10cm. Its pretty “near”.
• “Touch to share bookmark”… touch two devices together, and voila! there is instant sharing. I’m reminded of old Palm ads when they were pushing their IR technology and beaming business cards across trains between a man and a woman!
• NFC enables new consumer services with mobile devices. Take away that you should just be creative, and lots can happen.