What is ncache?

a web cache system base on nginx web server. faster and more efficient than squid.

we have published a release version 2.3 now, you can see the change log here, and a manual here.

if you want to improve your ncache performance please see this wiki paper: AdviceIOPerfomance

and we will maintain it be fresh.

you can also visit here by http://www.ncache.org or http://ncache.googlecode.com

and left your message here

there is also have some BUGS, so if you find it please tell us, thanks alot.

shinepf@gmail.com shineyear@msn.com

shuiyang@gmail.com shuiyang@live.cn

fgxlzh@gmail.com

Features

• The large storage can save over 30,000,000 caches

• The self sort share memory hash index

• Use linux epoll, sendfile and aio to improve the performance

• Base on the fastest web server framework : nginx

• The high throughput and high concurrent volume of the cache request

• Without http headers cache

• Low cpu cost and low iowait

• Memory cache the hottest data use HAC

• Aio queue with lio_listio function

Future

• The aio_sendfile function

• Raw device read and write

• Distribute storage system

• Auto delete cache file when is full

• Big cache file stream and from breakpoint continue send

How to use?

You can see it on the wiki paper here.

Problem yet~

• The memory cache elimination algorithm is not very mature so we will add this function at next version.

• only support on linux 2.6 up.

• do not have enough information about the Run-time statistics

• we don't have any test for big cache file

The ncache Subversion repository is available

• http://ncache.googlecode.com/svn/