On Mon, Aug 15, 2011 at 5:34 AM, 然 安 <nuanran...@yahoo.com.cn> wrote:
> hi, Trond. It means I can create many identical memcached_st instances > in advance and push them into a pool. Then, I can pop a memcached_st > instance when needed. > THe normal way do do this is create a single memcached_st instance with the properties you want, then you use that instance to create a pool (and during creation of the pool it will clone that instance) > How can I use the pool efficiently? > pop your instance, use it, push it back to the pool... > Furthermore, I have another problem. How can I restrict some fixed ips to > access the memcached servers except using iptables? Because the iptables > command needs root permission to execute. Thank you for your reply. > This is outside the scope for this mailing list... Trond > --- *11年8月12日，周五, Trond Norbye <trond.nor...@gmail.com>* 写道： > > > 发件人: Trond Norbye <trond.nor...@gmail.com> > 主题: Re: Can anyone tell me the benifit of libmemcached pool? > 收件人: memcached@googlegroups.com > 日期: 2011年8月12日,周五,下午1:36 > > > > > On Fri, Aug 12, 2011 at 3:17 AM, 然 安 > <nuanran...@yahoo.com.cn<http://cn.mc157.mail.yahoo.com/mc/compose?to=nuanran...@yahoo.com.cn> > > wrote: > > Hi, Trond. I have read the man page for the function > memcached_pool_pop(), but I still don't know what's the meaning of the > parameter bool block. > > > > If you create a pool with 5 instances and your code tries to pop 6 > instances out of the pool. if you set the block parameter to true, the 6th > call to pop will block until someone push an instance back into the pool. > > > > > I think the libmemcached uses the pool to store the memcached_st, and > memcached_st keeps a connection with each server in the configuration > string.But, can multiple memcached_st be stored in the same pool? Can a > memcached_st be poped multiple times? Does it mean a pool can only keep a > long cnnection with each server in the configuration string. > > > The pool is used to store memcached_st instances, and you can push and pop > the instances as many times as you like. The idea of the pool is that > instead of doing: > > my_little_function_who_needs_memcached() { > create memcached_st > call a libemcached function > destroy memcached_st > } > > you would do something like: > > my_little_function_who_needs_memcached(pool) { > grab instance from the pool > call a libemcached function > push it back to the pool > } > > Trond > > > > > > > > > Thank you for your reply. > > > --- *11年8月11日，周四, Trond Norbye > <trond.nor...@gmail.com<http://cn.mc157.mail.yahoo.com/mc/compose?to=trond.nor...@gmail.com> > >* 写道： > > > 发件人: Trond Norbye > <trond.nor...@gmail.com<http://cn.mc157.mail.yahoo.com/mc/compose?to=trond.nor...@gmail.com> > > > 主题: Re: Can anyone tell me the benifit of libmemcached pool? > 收件人: > memcached@googlegroups.com<http://cn.mc157.mail.yahoo.com/mc/compose?to=memcached@googlegroups.com> > 日期: 2011年8月11日,周四,下午6:48 > > > make install will also install a manual page for the functions.. > > Cheers, > > Trond > > > On Thu, Aug 11, 2011 at 10:29 AM, 然 安 > <nuanran...@yahoo.com.cn<http://cn.mc157.mail.yahoo.com/mc/compose?to=nuanran...@yahoo.com.cn> > > wrote: > > > Hi, if I define a memcached pool like this: > memcached_pool_st* pool=memcached_pool("--SERVER=ip:port",config_length); > can I pop memcached_st multiple times use this pool? like: > memcached_st *memc1 = memcached_pool_pop(pool,false,&rc); > memcached_st *memc2 = memcached_pool_pop(pool,false,&rc); > > can anywhere I find the detailed explanation of these functions, including > the returen value and parameters? > thank you very much! > --- *11年7月30日，周六, Brian Aker > <br...@tangent.org<http://cn.mc157.mail.yahoo.com/mc/compose?to=br...@tangent.org> > >* 写道： > > > 发件人: Brian Aker > <br...@tangent.org<http://cn.mc157.mail.yahoo.com/mc/compose?to=br...@tangent.org>> > > > 主题: Re: Can anyone tell me the benifit of libmemcached pool? > 收件人: > memcached@googlegroups.com<http://cn.mc157.mail.yahoo.com/mc/compose?to=memcached@googlegroups.com> > 日期: 2011年7月30日,周六,上午7:02 > > > BTW it works out well for non-threaded applications as well, since it is a > pretty easy API to use for just caching the connection between page calls > (i.e. and application running in Apache) > > On Jul 29, 2011, at 12:45 PM, Trond Norbye wrote: > > > You would use a pool of libmemcached instances in your multithreaded > application to avoid initiating, connect, disconnect and destroy each time > one of the threads wants to send a request to the memcached cluster. Instead > you can get an instance from the pool, use it, and put it back in the pool > for other threads to use.. > > > > Cheers > > > > Trond > > > > > > > -- > Trond Norbye > > > > > -- > Trond Norbye > > -- Trond Norbye
