14 Nov
2011
14 Nov
'11
3:24 p.m.
Hello
very interesting issue actually...the mtree module fits perfectly well in a
key-value model becaue basically is what the mtree table structure defines;
that's why redis was the first thing that came to my mind when I saw the
redis module. Two problems with redis:
-no "native" mt_match function, up to the user to find the best option
-replication. Until the cluster feature is ready, we need to change by hand
the server ip address, which implies a kamailio restart. There is no mi
command for changing the server in the fly, right..(not in the module
documentation at least)?
Daniel, I agree that your suggestion about the mi/rpc method would be nice.
I will also take a look at Mongo as Douglas suggests, and especially
CouchDB, because you can talk to Couch DB via http...
Regards
Javi
On Mon, Nov 14, 2011 at 1:32 PM, Douglas Hubler <douglas(a)hubler.us> wrote:
On Mon, Nov 14, 2011 at 5:10 AM, Daniel-Constantin
Mierla
<miconda(a)gmail.com> wrote:
are there any other no-sql database systems that
have such mechanism?
Might
not be hard to make a connector when the time
will allow -- just to know
the
best options here.
mongodb will auto promote. Caveat, (like redis if i understand
correctly), is that all writes are directed to a single master (be it
chosen dynamically), but reads can happen anywhere to spread the load.
Also, you need to accept the distaster scenario of a "network
partition" where a minority set of servers find themselves w/o a
master. Example: 5 servers in datacenter #1 and 4 servers in
datacenter #2. If the link between datacenters is broken, then all
servers in datacenter #2 will not have a master and will be read-only
until link is restored. Good part about single master is there's no
chance of inconsistent data.
Turns out local fail-over v.s. consistent data is a well explored area.
http://blog.nahurst.com/visual-guide-to-nosql-systems
I've worked w/the C++ driver to mongodb is anyone has questions.