Thank you very much .
On Wednesday, 17 October 2012 13:53:11 UTC+5:30, Yiftach wrote: > > I must admit, last time I played with recache was long time ago, so I > may not up-to-date with the latest details. > > Re load-balancer, just take my notes regarding latency and throughput. > > > > Sent from my iPhone > > On 17 באוק 2012, at 09:15, Kiran Kumar <[email protected] <javascript:>> > wrote: > > > Thanks for your response and taking time to answer , As far as i know > > Repcahe patch installed on Memcache is only for providing the > replication > > of Data with in the Servers and nothing to do with Load Balancing > concept . > > > > and i guess initially once the request is recievied from Client , the > > Memcache Framework itself takes care of distributing the Load / > > Requests among the servers of Memcache , So i guess both will be > Memcache > > Servers will be participating as active active nodes (correct me if i > am > > wrong here ) > > > > So i guess it is not that as you said "*Memcache only writes to Master* > " > > is not correct , correct me if i am wrong here > > > > > > So what do you say installing a Load Balancer only for checking the > Heart > > Beat Makes sense here ?? > > > > Please share your ideas > > > > > > And as you said , Compare the "curr_items" of the stats command from > both > > nodes for testing purose , but how can i really differentiate Data > between > > the two Memcache Servers , as far as i know each of the Server will be > > having same Set of Data as Repcache patch is applied to them ?? > > > > > > > > > > On Wednesday, 17 October 2012 12:02:25 UTC+5:30, Yiftach wrote: > >> > >> > >> > >> On Tue, Oct 16, 2012 at 8:55 PM, Kiran Kumar > >> <[email protected]<javascript:> > > >>> wrote: > >> > >>> Thank you very much . > >>> > >>> Another question , If i dont use a LoadBalancer , Will the two > Memcache > >>> Servers (Server1 and Server2) with repcache installed on them , will > they > >>> be like active active cluster ?? > >>> > >> > >> > >>> > >>> Means , will the load (requests from memcache client ) would be > >>> distributed between them ?? before the data is replicated between them > , > >>> Or is it that only one Memcache server will recieve all the requests > ?? > >>> > >> > >> AFAIK repcache is based on a master/slave architecture, you can only > write > >> to master but can read from both master and slave. You should take into > >> account that the slave might not be instatntly synced with the latest > write > >> operations on the master > >> > >>> > >>> > >>> If the load is equaly distributed between the Memcache Servers , is > there > >>> anyway i can test this that load is equally being distributed between > the > >>> two servers ?? (As i cant test this currently, after applying > Repcache > >>> patch to it ) > >>> > >> > >> Compare the "curr_items" of the stats command from both nodes > >>> > >>> > >>> > >>> > >>> On Tuesday, 16 October 2012 22:42:29 UTC+5:30, Yiftach wrote: > >>> > >>>> You should take the following into account: > >>>> 1. LB will add another network hop and therefore extra latency for > each > >>>> request > >>>> 2. Depending on the throughput of your Memcached servers, LB will > >>>> probably be the bottleneck (unless you are using HW based LB which is > too > >>>> expensive) > >>>> > >>>> > >>>> On Tue, Oct 16, 2012 at 5:39 PM, Kiran Kumar <[email protected]> > wrote: > >>>> > >>>>> Hi , > >>>>> I am using two Memcache servers (Server1 and Server2) with Repcached > >>>>> patch installed on those for replication purpose . > >>>>> With the help of repcached patch , data is being replicated on both > the > >>>>> servers and its working fine . > >>>>> > >>>>> I have some questions with respect to the above the way its working > . > >>>>> > >>>>> 1. Is introducing a Load Balancer in front of these two Memcache > >>>>> servers to distribute Data is a Good Solution ?? > >>>>> Will this help in maintaining equal load between the two servers ?? > >>>>> > >>>>> > >>>>> *Please share your experience on distributing Load between two > >>>>> Memcache servers (with Repcaced patch on them )by using a Load > Balancer > >>>>> * > >>>>> > >>>>> > >>>>> Thanks . > >>>>> > >>>> > >>>> > >>>> > >>>> -- > >>>> > >>>> Yiftach Shoolman > >>>> +972-54-7634621 > >>>> > >>>> > >> > >> > >> -- > >> > >> Yiftach Shoolman > >> +972-54-7634621 > >> >
