In some situations, you might want unicast support in Access Grid because multicast is not available or impossible to implement, e.g., VPN. Fortunately, Access Grid comes with built-in unicast-to-multicast bridge support especially Access Grid 3. However, it is a kind of undocumented feature. I found a few tutorial how to run it. Actually, there are many possibility to run a bridge in Access Grid 3.

Someday, you might want to monitor popular internet services on several hosts. It should be quick and simple so you don't have to install so long software packets to meet the dependencies. I have ones for you. They are written in pure Perl to monitor HTTP service and MySQL service.

I have an application running on local area network. It will usually update itself by checking the most up-to-date files from network folder shared from a server. My problem is that the shared folder are restricted access right by user and password. That means I have to connect to that shared folder prior to running the application. It is unaccepted by someone who can force me to find better solution. And now I found below code.

I am trying to develop something to interact with Apache ActiveMQ as a part of OpenCARE project. At first, I tried Java but it seems to be so difficult for me which mostly works on C/C++, Python, and PHP. Fortunately, ActiveMQ supports various protocol such as OpenWire, Stomp and XMPP. Stomp supports many scripting languages, e.g., Ruby, Perl, Python and PHP. I prefer Python but it seems both STOMPy and stomp.py are not complete. In addition, they are a bit outdate. So XMPP seems to be the most interesting protocol for now.

Apache HTTP Server comes with a handy mod_status for monitoring current status and performance of itself. However, mod_status doesn't show the performance in the past. I like the historical data because it would help me to find problem occured since last crash.

According to Blognone Tech Day 2.0, I have recorded a set of video and also converted them into AVI, 3GP, FLV and JPG. Some might not know what is FLV and how to use it correctly. FLV is actually very popular for last few years since it has been used in major sites, e.g., and . Basically, FLV is a kind of container like AVI such that contains stream of video and audio separated into many chunks. It is suitable for streaming by its own file format. I distributed videos of Blognone Tech Day 2.0 in FLV because you might want to put it in your web site by your style. Google Video allows you to embed the videos but you can't change its theme to match your theme. FlowPlayer might help you in this case.