I discovered a little bit of extra background reading when it comes to Linden Lab and its plan to tackle the concurrency barrier.
Linden Lab first hit a peak currency of 60,000 in mid-January of this year. It wasn't an isolated event; Linden Lab continued to set new peak concurrency records throughout January.
http://secondlife.reuters.com/stories/2008/01/31/data-shows-growing-divide-between-casual-and-heavy-sl-users/The trend upward toward 60,000 and beyond shoudln't be a surprise; Linden Lab has had it graphed and tracked.
http://blog.secondlife.com/2008/04/15/second-life-economy-grows-15-from-q4-to-q1/I seem to remember that stability took a sharp turn for the worse, particularly in my experience, at about the beginning of April of this year. I think there must be some basis for my memory and perception, because in Googling blogs, the beginning of April is when I start seeing a lot of description of 60,000+ concurrent users as routine.
In April of 2008, Linden Lab was still reporting grid problems in the blog, rather than on a separate subdomain. Look in the archives of the Linden Lab Blog, and April has a whopping 109 entries, most of which document the severe load problems on the grid. Skim them to remember the pain. Linden Lab did acknowledge that in April, "virtually every piece of mission-critical Second Life Grid infrastructure failed catastrophically at least once." (
http://blog.secondlife.com/2008/05/09/second-life-grid-availability-in-april/)
On April 22, in announcing a new CEO for Linden Lab, outgoing CEO Phillip Rosedale let us know of incoming CEO M Linden, "He will have an intense focus on improving the in-world experience and stability and reliability of Second Life." (
http://blog.secondlife.com/2008/04/22/announcing-our-new-ceo/)
In the new CEO's first blog post, on May 27, he noted that, "Platform stability is a key strategic priority for the company as it has been a severe pain-point for residents (especially recently)." (
http://blog.secondlife.com/2008/05/27/my-first-week/#more-2001)
After two months on the job, he writes, "Our growth has come at a cost which you felt, and still feel - platform stability, viewer performance, lag, inventory management, etc. It’s important for you to know that we are ALL OVER these problems and that we’re making progress." (
http://blog.secondlife.com/2008/07/09/letter-to-second-life-residents/)
So Linden Lab saw where the trend was going in concurrency certainly last year. The trend became a reality in January this year. It became a huge problem in April. And now in July of this year- as quoted in the original post- Linden Lab is now contemplating solutions.