Category: Technology

Software, P2P, web, gadgets

关于 P2P streaming

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,…


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A virtual server products list

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 is based on virtual machine technology that exists for a while.

Virtual server products that I know of:

– IBM had the technology (named zen?) to divide a mainframe…


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w.bloggar–desktop blog tool

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.

1000MB的internet硬盘

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,[email protected] ;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。


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My pain on Java open source portal evaluation still goes on

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 like JSR 168, JSR 170, WSRP, IOC, JSF etc; it uses PICO, the light-weight IOC framework; it also uses JSF as the portal presentation technology and has an eclipse plug in for…


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PHP, .NET or J2EE? –Some considerations when choosing web development platform

One of my old posts, with some thoughts apparently not true or outdated in today’s view; just put it here to fill the space 😉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 ASP. whileas Jsp and asp.net are pre-compiled when serving the request, Java and ASP.NET(whether C# , VB.net, J# or others) are full-fledged object-oriented language; PHP is…


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浅谈中、美网游

1)国内的网络游戏开发:

–最早流行的都是一些MUD–泥巴游戏,著名的有笑傲江湖,金庸群侠传等,到现在还有大量玩家。早期的MUD都是纯字符的RPG类养成游戏,现在的新版本已有图形版。

–网上棋牌类游戏:四五年前开始兴起,打牌下棋等,国内有许多这类网站/游戏中心,如联众。

–这两年开发的新游戏,及搬上网的老RPG游戏等。受韩国网游鼓舞,国内开始大量投入游戏开发,如网易的大话西游。金山也将以前的剑侠情缘搬上网。台湾的老牌游戏商如大宇、智冠,华义等也都以进军大陆。

但总的来说市场是韩国游戏的天下。另外国内全是电脑网游,没有online console game.

(2)美国的网游

其实美国网络游戏也很热,从游戏种类/数目上要比国内多得多。70年代开始美国已有许多mud games. 现在最流行的网游包括sony的EverQuest, EA的’Ultima Online等。quake/doom类的战斗游戏也较流行,但subscriber人数总的来说与亚洲相较不多。我想其中一个原因是可供选择的游戏太多,而且许多不用付费。…


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