Problems:
———————-
Performance
redundancy

Technology:
———————-

MemCacheD

CARP
– ucarp
– fires virtual ip up/down
– takes a couple seconds
– dead simple

Heartbeat
– does not always fail over properly

pf/pfsync

mod_proxy
– looking at adding support for mod_perl for scripting

perlbal

Alteon

cfengine

SQL:
pgcluster

mysqlcluster
– cannot add and remove nodes at runtime
– only 254 nodes (clients or data sources) – hard limit

Anycast:
–

Misc:
———————–

tour