Archive for May, 2009
Tuesday, May 19th, 2009
Cache is an important aspect of any system. However, cache can be easily saturated and invalidated with a single scan or a large query. With this in mind it is necessary to know your system usage and pick performance capabilities.
Disk I/O is not fast. The following table outlines the limits:
...
Posted in Databases | No Comments »
Friday, May 15th, 2009
The following article provides a good summary of Oracle performance tips:
http://www.orafaq.com/wiki/Oracle_database_Performance_Tuning_FAQ
In addition, see an article on extending SGA memory block on Windows 32-bit platform.
Posted in Databases, Programming | No Comments »
Saturday, May 9th, 2009
I started to look into different options to exchange data between mobile device such as blackberry and a typical REST web service.
The following tutorial looks into different options. It basically chooses JSON over other available options for the perfect balance of development simplicity and data overhead:
http://developerlife.com/tutorials/?p=624
Posted in Blackberry, Mobile Development | No Comments »
Thursday, May 7th, 2009
This site provides a good conversion tool to find out UNIX date for a regular timestamp:
http://www.epochconverter.com/
Actually found this one to provide wrong data. However, the idea is neat. I'll write my own service then...
I spent more time... the timestamp that is provided by the site doesn't include millisecs. If you ...
Posted in Programming | No Comments »
Thursday, May 7th, 2009
I was looking into reusing SMS for communication with my cell phone.
The following site suggested a very nice trick: http://web500.us/how-to-send-text-messages-or-pictures-from-pc-to-cell-phone/
If you are sending email to the Rogers Wireless subscriber, he has to be subscribed for the Email-SMS gateway. Each forwarded SMS costs 5c. If subscriber is not subscribed for a ...
Posted in Telephony | 1 Comment »
Wednesday, May 6th, 2009
For cron expression syntax see the following link:
http://quartz.sourceforge.net/javadoc/org/quartz/CronTrigger.html
Posted in Java, Programming | No Comments »