p2p协议中gnutella protocol 传输效率低下，gnutella based clients的market share也逐渐减少，早已是irrelevent的东东。同样具有search功能的eDonkey/eMule network在大文件共享上要强得多。 但现在国外在p2p Streaming上实用的东东PeerCast (open source)却是基于gnutella协议的，用于audio streamming效果很不错, video效果感觉一般。 国外还有几个propreitery protocol的免费p2p streaming软件：p2pRadio是open source的用java写的，StreamerP2P是一个closed source产品。 在VOD或realtime broadcast之类的流媒体应用上真正有前途的的还是象bittorrent之类的高效swarming技术。除了大家提到的coolstreaming外, 国内还有几个类似的产品－－据我所知这方面这几个国人的产品是走在了前列。 另外许多人正在研究增强bittorrent本身，例如搜索功能，与RSS结合等。现在已经有几个这方面的东东。 还有一个突破性的产品是swarmstream–号称具有接近BT的throughput但又能保证数据包的接收顺序–这是streaming技术梦寐以求的功能。虽然$5000一套SDK, 还是物有所值。
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VPS stands for virtual private Server, a techology to divide a server into multiple “virtual machines” and each of the “virtual server” can run its own operating system as if it’s a standalone server. VPS is mainly used for Web hosting. It can also be used toestablished “sandbox” or for demo/testing purposes etc. The technology [...]
w.bloggar supports writting and publishing blogs from desktop for many blog sites and blog tools such as blogger, movableType, B2, WordPress, .Text etc. This post was created nad published by w.bloggar.
谢老蔡：） 关于大文件共享，我刚想起一个更好的办法： 用 gmail + roamdrive. roamdrive是一个可以把一个hotmail或gmail账户当成你的网上硬盘的软件–原理是把大的文件切割成小块，每块变成一个email,这样就能突破gmail每个邮件10MB的限制。 我建立了一个新的gmail账号，pku8808@gmail.com ;需要上载或下载文件的同学去http://www.roamdrive.com 当漏一个最新的roamdrive软件，然后就可以直接从windows 把文件拖动到gmail里去，或者从gmail拖动到本地硬盘。
After extensive search, reading, comparing and trying, finally I limited my choices to the following three: – exo platform – Liferay – uportal All of them have JSR 168 support, which is my basic choosing criteria. Still they all have pros and cons: – exo platform: the most technically advanced; has all the buzz words [...]
One of my old posts, with some thoughts apparently not true or outdated in today’s view; just put it here to fill the space – The technical platform selection first is determined by what kinds of resources/expertise the developemnt team have. – Language by itself: PHP is a scripting language, like VB script used in [...]
a brief comparison of Chinese and US online gaming market
