SL project updates week 43/2: miscellaneous, group chat

Just Another Tequilla Sunrise, Isle of Love; Inara Pey, October 2014, on FlickrJust Another Tequilla Sunrise, Isle of Love, October 2014 (Flickr) – blog post

Server Deployments Week 43 – Recap

As always, please refer to the server deployment forum thread for the latest news and updates.

  • On Tuesday, October 21st, the Main channel was updated with the server maintenance release previously deployed to the LeTigre and Magnum RCs in week 42. This update includes a crash fix and improves the delivery pipeline for abuse reports
  • On Wednesday, October 22nd, the release candidate channels were updated as follows:
  • BlueSteel and Snack will remain on the CDN project, and were updated with the same server maintenance package being deployed to the Main channel
  • LeTigre and Magnum were both updated to the CDN for texture and mesh fetching.

Upcoming Deployments

There is a further server maintenance package being prepared for deployment. however, it is still undergoing testing, and it is not clear whether it will be ready for deployment on Wednesday.

CDN and the Future of Snack

With the CDN now supporting texture and mesh fetching across all of the primary RC channels, there is a chance it may be promoted to the Main channel in week 4, particularly given that, outside of CDN support, all the server channels are now in parity. However, the Lab is making no commitments to this, and is taking a “wait and see” approach on what may happen. In particular, the Ops team will be monitoring performance over the weekend, when SL usage is expected to be at its busiest since the RC-wide deployment of CDN support, to see how things hold up.

As it stands, there are an estimated 130 regions on the Snack RC. As these all came from the Main channel, they will likely be switched back to that channel once it has CDN support, and Snack will again be dissolved until it is once again required.

Group Chat

With the most recent changes to the back-end servers, Simon Linden is continuing to poke at the code to see what can be improved. He’s now looking at the code that routes the messages – where it goes to find where group members are on the grid in order to be able to deliver messages to them, with the aim of trying to improve things there.

At the moment, if you move between regions which active in a group chat, the first message to be sent to you after you move will be sent to the region where you were and generate a failure message which has to go back to the chat service, which they has to relocate you and then attempt a further delivery. It is hoped that this can be improved, and there was a brief test following the Server Beta User Group meeting on Thursday, October 23rd to this end, just to see how the code is performing.

It has been suggested that the Lab should bypass the region hosts altogether when handling group chat, and attempt to route it directly from the chat servers to the viewer. However, this would likely require some serious re-engineering; more to the point, it could introduce security vulnerabilities.

Other Items

Aditi L$ Balance

A question was asked on how account L$ balances are updated on Aditi. Maestro replied that account balances are checked nightly (SLT), and any falling below L$ 10K (because someone has been uploading mesh models for testing / viewing prior to paying to upload them on Agni, for example), they are automatically increased by L$5K. However, if someone resets their account password (which triggers a reset on Aditi), their L$ balance will change to match their L$ balance on Agni, although again, if this is below L$10K it should be topped-up but L$ 5K overnight.

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