Persistency and transactions

• Persistent objects
  • Lists and dictionaries
  • PersistentList vs. normal Python list
  • Persistent, modifications, __setattr__ and transactions
  • Volatile references
  • Measuring persistent object sizes
• Transactions
  • Introduction
  • Using transactions
  • Transaction boundary events
  • Viewing transaction content and debugging transactions
• Object lifecycles
• ZODB Database
  • Introduction
  • ZODB tips and tricks
  • Packing the database offline
  • Visualizing database object graphs
  • Cache size
• Storage
  • Introduction
  • Pickling
  • Binary trees
  • Buckets
  • Storing as attribute vs. storing in BTree
  • BLOBs
  • SQL values
  • Transaction sizes
  • Analysing Data.fs content offline
• Migrations