El 15/12/10 22:58, Dustin escribió:
On Dec 15, 1:44 pm, Alex Miller<[email protected]> wrote:
While it is technically possible to have memcached servers available between
datacenters, there are a number of drawbacks to doing this. The first is the
security issue of having the server accessible outside on the public
internet. As memcached doesn't have authentication, anyone could potentially
connect to it. This can be avoided by using good firewall rules or a VPN /
dedicated link. The second is the latency introduced by pulling data across
the net then pushing it to the client. The latency increase could easily
exceed the speed benefit offered by memcached.
memcached does have authentication, but the latency thing is the big
part. The reasons one would add memcached to an infrastructure plan
start falling off when you introduce WAN latency.
You can synchronize caches across WANs somewhat and end up with a
2tier caching layer, but it's tricky to get right.
Hi,
Thanks !!
Regards
