batsonaMaryland
join:2004-04-17
Ellicott City, MD Reviews:
 ·Vonage
 ·Verizon FiOS
| reply to AlanM
Re: Horrible youtube speeds Time for a deep-dive. I looked at a research paper online where students examined the cache-server-selection process used by Youtube. Here's an excerpt from it. I think we're looking at the tip of an iceberg:
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Primary cache servers follow the naming convention, v[1-24].lscache[1-8].c.youtube.com. From the example, you can see that there are 24 X 8 = 192 possible hostnames. Then, for example, the first iteration, or v1.lscache1.c.youtube.com maps to ~75 different Address Records in DNS, depending on time-of-day, and location of the querying IP.
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It appears that there are variables at play here, that are difficult to control, if we're going to try to 'fool the system'. This is from a paper, "Where Do You "Tube"? Uncovering YouTube Server Selection Strategy", written by some students at the U. of Minnesota. |
