I'm in the process of building out a new PostgreSQL (9.3) environment in which traffic hovers around 99% read. We'll have 2 very powerful machines, connected via 1Gb ethernet. With the multitude of replication and failover options available in the 9.x release, what's the best option for a high-read scenario? A solution in which the standby server also acts as a read-only slave would be ideal.
SnapOverflow
Use the built-in binary replication. Unless you have a reason not to use it, that should be the default choice.
Reasons not to use it include the requirement to do partial replication and cross-version or cross-platform replication. I don't think that applies to you.