The document discusses various techniques for improving the performance of Plone websites, including measuring performance requirements, profiling code to identify bottlenecks, leveraging different caching options in Zope and externally, and scaling through load balancing and redundancy. The key recommendations are to use the built-in Zope caching, profile code to optimize slow parts, implement an HTTP cache like Squid, use a ZEO client/server architecture with load balancing for redundancy and scalability.

1. Delivering High Performance Plone Internet Development Group (ILRT) Dominic Hiles

10. Bristol CMS Architecture