Btcache in Kolkata. ISP's offering high download speeds

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Now a days everyone using Alliance Broadband or Pacenet Meghbela broadband are experiencing download speeds they never imagined. Users of this two ISP's are downloading a 1GB movie in 5 to 10 minutes. They almost forgot the days when it took almost 4-5 days to download a 700MB movie. Alliance Broadband & Meghbela Boradband the two pioneer broadband services in Kolkata are offering their users the high speed download, of which all of their users got addicted to. This is the bless of the btcache project which they implemented. The project was invented by Bulgaria, a country which was referred as a country with least download speed. They invented this btcache project and now they are the 3rd place holder in the ranking of top download speed offered by any country.
What is this btcache project?
          As we said that btcache (BitTorrent Caching suite) project was invented by Bulgaria to fight their low download speeds. As the inventors said in Google project hosting

The idea is to install one part of this software somewhere on the network where it is able to passively collect chunks of BitTorrent data passing by using for example port mirroring, passive optical tap, or transparent bridge.
It does not participate in the conversation and only needs to see one side of the TCP stream. It follows the BitTorrent protocols but obviously cannot read into encrypted packets. It can snoop into PPP/L2TP encapsulated payloads.
It will fill up a big storage array with all the pieces it sees, and will also note the ip/port/infohash of all new handshakes it sees.
A second component can then connect back to whichever of the machines it chooses (i.e. your own customers) and offer whichever pieces you have unsolicited.
The first component is written and able to process up to ~800Mbps @ ~200,000pps using ~15% of a Xeon 2.4Ghz CPU.
The rest is to be completed.
It's all very alpha-quality at the moment..

          The main matter of this project is that it runs on a peering model. It means uncapped download speed from any local peer. Every ISP has their data plans with speed limits, but on btcache project this speed limit can be bypassed. Wishnet was first to introduce this plan in Kolkata after that Alliance Broadband & then Meghbela Broadband followed them. Though Wishnet has depreciated this project but the latter two are continuing this. So what happens actually on this btcache. We tried to contact Alliance Broadband but got no response form them. Here we try to demonstrate about the project as we think it could be,
          Suppose you are downloading a movie from by UTorrent. And you are the first downloader of the movie in your ISP's local network (means your ISP uses the IP addresses in your area from 198.120.xxx.x to 198.120.xxx.x). Then while downloading you will see in the Torrent client that in the peer list a peer with the ID btcache/xx-xx-xx-xx (it refers to some digits, may be the version of the source code). And you will see that while you;re downloading the file in your normal downloading speed you are simultaneously uplading the file to the btcache peer. This peer is nothing but a Central server located on your ISP's main server office. It is server with very high capacity (may be 5PB storage) and having a high capacity LAN port capacity. So the main thing is being done here is that the file you downloading via your torrent client for first time is automatically being stored in that high capacity server placed by your ISP. And this btcache peer will be added automatically whether it is a private torrent or public.

Peer uploading the file to you >> You're uploading the file to the central server

          Now the file is stored on the server. The very next day another user of your ISP is going to download the file. Else take it as many other users in your ISP are just started downloading the same file you downloaded & uploaded in the ISP's server. Now here is the place where the reason of huge speed lies.Whenever the other user tries to download the file he depends less on the peers other than his ISP's and depends most on the Central btcache peer. Now as peer the internet cable capacity & the central server's port capacity everyone downloads the file at a huge speed (may go high as 1+Mbps). This just the same thing you used to do when you shared any file with your friend in your LAN with the help of HFS or any other file sharing application. Here you are just directly downloading the file from the central server.

Main central server is distributing the file among its users.

          Until it was the Central server who was distributing the file among its users. Now if most of your LAN peers also seeds the torrent for a long time while everyone has downloaded the file fully the the next user who comes to download the file will mush more speed than the users got from the Central server. It may go upto 10+Mbps. Means here the user is simultaneously downloading from its Central server & his LAN peers.

Local peers along with the central server is giving the file to a single peer. May be you :)

          So this was the main story behind it. The first downloader will only get low speed but after him everyone will get an uncapped speed. And moreover if all downloaders in your LAn continues seeding the torrents then you'll be in a fly :D. Now a days Alliance Broadband is publicizing it by naming it as a package of "peering"

Alliance plan with peering option. Peering means btcache implementation

          Meghbela Broadband also has this btcache project enabled but they did not advertised it yet. But it is been heard that the peering speed in Meghbela Broadband is higher than the Alliance's one. So Kolkata 4G is here and the btcache also. Enjoy an internet era with enormous speed :-bd

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Japan took a step forward for illegal downloads

          Some political parties in Japan are trying it hard to accomplish the law of punishing illegal downloaders. If this law gets passed then anyone who downloads any music of videos without the copyright owner's permission then he/she may be sued & may be jailed for not less than 2years or may be fined with 200million yen (Rs. 12crore approx). But this will only happen if the copyright holder files a suit. Upon approval of the govt. the law will be enforced w.e.f. October 1, 2012.
          Till date there is no well made copyright enforcement law in Japan. The maximum punishment for the illegal downloader was decided by the provisions of the music industry. Now 3 political parties of Japan are trying to introduce this law & if it is done & the law is passed then illegal download in Japan will face a massive drop. But be sure that Japan govt. also take control of the proxies or bypasses to evade the enforcement. Cause we already witnessed in America that post Megaupload shutdown & ThePiratebay hunt down, most of the downloaders & uploaders are using VPN, Proxies and many other tools to hide themselves. But people of Kolkata not to worry, copyright owners here are too much reluctant to do these things & they are almost neglecting all these illegal downloads (:| . But it is always safe to be safe.

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4G service launched in Kolkata

          Now the days have come when Kolkata will be able to watch hassle free 1080p HD videos online, download a blue ray movie in 5minutes & stream HD videos seamlessly. Being first in the country Airtel launched 4G services in Kolkata yesterday. It is a more better service than the current 3G. And airtel said that the speed of the 4G dongle will be in average 40Mbps for download, which can go to a maximum of 100Mbps & 20Mbps for uploads. There only a few circles in world where currently 4G services run (Us, Europe, China, Japan etc.). Till now 4G services will be available in USB Dongle & Wi-Fi network, not in voice processing (means mobile call & sms services is not included). Airtel was allocated to use 20 Mhz of BWA spectrum in 2.3 Ghz frequency band which is considered suitable for 4G services.

Airtel 4G Device

          The rate of 4G Multi mode dongle is around Rs. 7,999 & the wi-fi with CPE is Rs. 7,750. And the tariff is as below

Plan Name	RentalPer Month	Free usage
breakfree	Rs. 999	6GB
breakfree max	Rs. 1399	9GB
breakfree ultra	Rs. 1999	18GB

          Now this is the most shocking part we got. If you are having a speed of almost 40Mbps then your free usage (lets take for example 6Gb) will end within 2.30 minutes [only if you're downloading a 6GB movie]. So what's the use of this minimum free usage :-O . We think this minimum limit must be raised to at least 100GB. And one more thing, as we can see that 3G services is still not yet so much popular in India for its high price how could this 4G services will be a good investment decision. Kapil Sibal has pointed out this matter but at present there is no hope for the price to be slashed. But we must admit that this a indeed a good step forward in the cyber world of India.
#Update: It is now known that after your free usage gets finished you will be getting download speed of 128kbps. For more information visit Airtel's official 4G page here.

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