I gave a presentation about the Google Talk Service a while ago at the Google Scalability Conference hosted by Googlers in Seattle. You can watch the video below.
Here is the abstract:
Since launching Google Talk in the summer of 2005, we have integrated the service with two large existing products: Gmail and orkut. Each of these integrations provided unique scalability challenges as we had to handle a sudden large increase in the number of users. Today, Google Talk supports millions of users and handles billions of packets per day. In the presentation, I discuss several practical lessons and key insights from our experience that can be used for any project. These lessons cover both engineering and operational areas.
Posted by Reza Behforooz, Software Engineer