It's really a discussion for another mailing list, but if you could elaborate to me directly or to couchb...@googlegroups.com, I'd be interested in why you say Couchbase is much slower. I've not seen it that way.
Full disclosure, I'm a couchbase person. I also do a lot of work on the spymemcached client. Thanks, Matt On Thu, Mar 14, 2013 at 4:47 AM, Oleksandr Drach <luckyred...@gmail.com>wrote: > Thanks, Henrik! > I will look onto Cassandra later. > > BTW repcached 1.2.x may fit our needs.. > Anyone has used it in production? What are your feedbacks? > > > On Monday, March 11, 2013 1:48:23 PM UTC+2, Henrik Schröder wrote: > >> Memcached is a cache, not storage, you really shouldn't use it as such. >> When you set a value in memcached, you have no guarantees whatsoever that >> you'll be able to get the value back afterwards. You're guaranteed to get >> the latest value set if you get something, and you're guaranteed to not get >> a value if it's been deleted or has expired. But there are a lot of factors >> that can cause a value to be spontaneously evicted, to say nothing of the >> fact that you lose everything if you restart it or if the machine crashes. >> >> Also note that any replication functionality can lead to inconsistency, >> since there are no built-in mechanisms for resolving that, you can just >> hope that your failover server has the same data as the original one. >> >> If you want storage, then get a piece of software that actually offers >> storage, there are plenty to choose from. But memcached is probably the >> wrong choice for you. If you only need key-value storage, then I suggest >> you check out Cassandra, it scales pretty linearly in that scenario. Or you >> could check out hstore in Postgresql, but you probably need to make your >> own sharding for that. >> >> >> /Henrik >> >> >> >> On Mon, Mar 11, 2013 at 9:57 AM, Oleksandr Drach <lucky...@gmail.com>wrote: >> >>> Hello Dormando! >>> Thanks for your reply. >>> >>> Description and requirements are: >>> - Memcached will be used a primary storage (i.e. not for caching MySQL). >>> - It should have failover feature (in case if one server fails all >>> connections goes to another server). >>> >>> Basically something like Master-Slave will be sufficient, but >>> Master-Master architecture is more acceptable. >>> Thanks! >>> >>> >>> On Sunday, March 10, 2013 1:58:16 AM UTC+2, Dormando wrote: >>> >>>> > Dear memcached community, >>>> > It would be really good to build a failover memcached cluster.� >>>> > As I know this functionality is not provided by default.� >>>> > Hence as options - you may use CouchBase Server or something like >>>> Repcached. >>>> > Both of them has disadvantages: CouchBase Server is much slower, >>>> �Repcached works with legacy memcached version 1.2.8 >>>> > >>>> > Based on your�experience�what is the best way to build cluster of >>>> memcached servers? >>>> > >>>> > Thanks in advance! >>>> >>>> Hi, >>>> >>>> This depends on why you need that second cluster and what the >>>> constraints >>>> are for it. >>>> >>>> You can do client side replication via libmemcached which will handle a >>>> lot of potential use cases. Though oftentimes people who are attempting >>>> to >>>> do this are doing so because they don't understand normal memcached >>>> clustering very well. >>>> >>>> So it'd be useful to state all of your requirements up front. Then we >>>> can >>>> make a real recommendation/etc. >>>> >>> -- >>> >>> --- >>> You received this message because you are subscribed to the Google >>> Groups "memcached" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to memcached+...@**googlegroups.com. >>> >>> For more options, visit >>> https://groups.google.com/**groups/opt_out<https://groups.google.com/groups/opt_out> >>> . >>> >>> >>> >> >> -- > > --- > You received this message because you are subscribed to the Google Groups > "memcached" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to memcached+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/groups/opt_out. > > > -- --- You received this message because you are subscribed to the Google Groups "memcached" group. To unsubscribe from this group and stop receiving emails from it, send an email to memcached+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
