Distributed Computing

Sprite is a research operating system developed at the University of California, Berkeley, by John Ousterhout’s research group.

Sprite is a distributed operating system that provides a single system image to a cluster of workstations. It provides very high file system performance through client and server caching. It has process migration to take advantage of idle machines. It was used as a testbed for research in log-structured file systems, striped file systems, crash recovery, and RAID file systems, among other things.

As announced in 20040429163636.911BB114DF@beastie.frontfree.net, we finally, have to accept the fact that pyxis_gk is leaving the development team due to lack of time and interest.

I am planning to have a commit storm on GridDistribute’s source tree. This will happen in the following steps:

An interesting conversation in FreeBSDChina’s core:

delphij -> yarshure: I need some help on qmail
yarshure -> delphij: alu is qmail guru
delphij (continue the conversation with alu and finally solved the problem)

The idea of our (Grid Distribute) access control’s design is somewhat simple one. To maintain maximum security, it turns out that we must keep the directory highly consistent, to prevent ACL distribution problems.

The “Distribution Set” is an important idea on GridDistribute’s vendor distribution. Here comes different ideas on implementing it, which will influence the search approach we will choose. Personally, I think we must have a final decision before next Wednesday.

This is a complex problem. A peer to peer system consists many self-determinating nodes is hard to control, and when it goes crazy, it will be easy to launch a distributed denial-of-service (DDoS) attack.

Here are some of my thoughts, well, they are not mature and some of them might be misleading, but I will write them here.

选择P2P作为毕业设计的题目应该不是一个偶然，可以说，这个想法从大二就在酝酿，到了四年级，终于得以实现，不能不说是一大快事。

说到P2P，古人说，挟天子以令诸侯，然而，我一直怀疑，一个连自己都罩不住的天子，明明都被人「挟」了，如何得以号令天下？如果说他能罩得住自己，那么，连他都能「挟」了的人为什么不自己称王呢？总之，我一直觉得，挟天子以令诸侯这类事儿属于子虚乌有，多半是文人墨客笔下的夸张吧。