13May/070
BarCampPortland 2007 – Redundancy and Load Balancing
Problems:
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Performance
redundancy
Technology:
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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:
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