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October 21, 2005

Webchat version 1.8.5: 10/21/2005

Bug Fix: Dock responds properly to blocking regardless of whether user is selected
Bug Fix: Don't reset the dock when the local user changes rooms if they are an admin
Bug Fix: Fixed some error in the new documentation for sendArchive
Bug Fix: Tweaked font leading in userinfopane so everything lines up better
Bug Fix: Fixed settings button display issues
Bug Fix: Icon image updates when changed via getUser
Bug Fix: Output pane was being cleared after resize for languages that can not use smileys
Bug Fix: Hide the smiley button for languages that can not use smileys
Security: Added message validation code to prevent hackers from using illegal font sizes, leaving tags open, or using unsupported tags
Security: Ensure user sending text is actual user and in current room
New: Moved All the stream management code to the new StreamManager class for better reliability
New: Added Error message for when user is using an old version of the SWF

Posted by Nate Thelen at 10:33 AM | Comments (0)

October 06, 2005

Update: Userplane Service Interruption on 9/12/2005

We have received a report from the building that houses our datacenter. Here is what happened (all times PST):

- At 12:35 PM the city power was lost, UPS immediately took over and by 12:38 PM all 5 generators were online.
- At 12:55 PM generator #5 blew a head gasket causing a shutdown. This generator has had all manufacturer recommended preventative maintenance. Therefore it failure should be considered an anomaly that could not have been forseen or anticipated. Since the system was designed to run on 4 generators, there was not service interruption.
- At 1:07 PM generator #4 failed because of an over speed condition. This is likely caused by a problem in the control system. We are waiting to hear from the generator vendor as to whether all preventative maintenance was completed. Within a few minutes, all generators were offline since the load was too much for the remaining 3. UPS immediately took over
- At 1:20 PM the building's UPS system shut down.

It seems that that this complete failure is the result of 3 very rare failures. The building is going to be doing a potential redesign of the system and we are also determining if there is a need to move our data center to a new location.

We will continue to keep you updated.

Thanks,
Userplane

Posted by Nate Thelen at 05:33 PM | Comments (0)