9.0
The individual items in the lists previously were sorted approximately by expected impact on your system. But there were so many changes to 9.0, they're being broken up by category for this section. As with all of the version summaries here, this is focusing on performance related features, which represent only a fraction of the changes made in this version. Some major areas renovated in 9.0, such as big changes to database function languages PL/pgSQL, PL/Perl, and PL/Python, are completely ignored here. The goal here is to provide a quick (compared to the release notes at least) summary of the big performance related pieces in only a few pages.
Replication
- Asynchronous master/slave Streaming Replication is built-in to the database, without requiring as many external scripts to be configured.
- Replicated systems can be set up as Hot Standby ones that allow read-only queries to execute against them.
- The control over WAL archiving has been split. In addition to the existing...