Hibernate

According to Hibernate Sessions and transactions, implementing unit of works using Session-per-conversation is preferred over session-per-request-with-detached-objects. In Chapter 11 of hibernate manual, it's stated that CurrentSessionContext should be implemented but I haven't found the example on the wiki. Help?

Grid computing / distributed computing frameworks

• Globus Toolkit:
• Terracota: Transparent Clustered JVM
• GigaSpaces
• Coherence

Terracota

http://www.terracotta.org/

Doubts:

• Question: What if you don't want to replicate state through all nodes in the grid? HTTP Session replication can be VERY expensive.
  Answer: http://www.terracotta.org/confluence/display/orgsite/HTTP+Session+Clustering
• Question: How about resources such as JDBC connections? Will each node be able to establish their own connections? Furthermore, can they have their own configurations?
  Answer: http://www.terracotta.org/confluence/display/orgsite/Hibernate