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Summary:

BitTorrent, a San Francisco-based peer-to-peer networking start-up is working with Cachelogic of Cambridge, UK on a new protocol called the “Cache Discovery Protocol” or CDP, which supposedly will act like DHCP for peer to peer networks. The protocol has been developed by Cachelogic. DHCP assigns IP […]

BitTorrent, a San Francisco-based peer-to-peer networking start-up is working with Cachelogic of Cambridge, UK on a new protocol called the “Cache Discovery Protocol” or CDP, which supposedly will act like DHCP for peer to peer networks. The protocol has been developed by Cachelogic.
DHCP assigns IP addresses to devices on a network automatically, without much mucking around on the end user part. Similarly, the new CDP would allows BitTorrent client to auto discover better seeds that have been cached on the network, and allow faster downloads of the files. The new technology is especially helpful in situations where there are only a handful of seed files.

This is not the frist time BitTorrent and Cachelogic have teamed up. The two companies have a history of working together and did a large scale trial for UK-based broadband provider, ntl. Though, not all details are available at this point, my understanding is that the caching of these seeds addresses will address some of the issues around BitTorrent’s performance, especially where there is very limited upstream speed available. (More details to follow!)

The torrent swarms see performance degradation when there are too many leechers, folks who pull down more data than they upload. (If you a more detailed and succinct description of these performance issues, please leave a comment.) Many actually don’t do this intentionally. While the broadband providers have been slowly increasing the downstream speeds, the upstream data transfer speeds have not increased that quickly.

Internet service providers will find this new protocol particularly interesting. It will boost the speed of downloads, but will place limited demands on their system from an upstream data perspective. As I said earlier, more on this when reporting resumes on Monday. It is time to break for the weekend.

Update: More details here.

  1. New Tech to Aid BitTorrent Transfers…

    Om Malik, whom I met last night at the WordCamp kickoff, introduces a new protocol called Cache Discovery Protocol or simply CDP. It works by finding better, cached seeds on the network for your bittorrent client. Once fully rolled out, CDP could dra…

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  2. Any idea when the new protocol will be implemented?

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  3. it could be as soon as net week, i am told. still sketchy details on the timing. hopefully soon.

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  4. Say this should be released as soon as next week, Surely this would be mainly with just the official BT client, would still take some time before popular clients like uTorrent, and Azuerus integrate the new protocol into their clients for the users.

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  5. Leechers don’t necessarily pull down more data than they put up; a leecher is simply someone on the swarm who has not yet completed his/her download. Depending on the upload capacity of the leecher, he/she may very well upload much more data than what he/she downloads.

    Just to clarify that =)

    But it is true that on average, a low seed/leech ratio will adversely affect swarm performance.

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  6. [...] their own super peer infrastructure, but that takes away much of the infrastructure cost savings. They have a partnership with CacheLogic that can fix these issues, but it is unclear if that infrastructure is in [...]

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  7. [...] CDN business. At present, standard-resolution streaming costs up to 15 cents an hour, but there are P2P hybrids from the likes of CacheLogic that can lower that to 6 cents an hour. CacheLogic is boasting that it [...]

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  8. I am an avid torrent user and some thing like this can really help me. The only problem that I face right now is that bandwidth is still very costly in india.

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