ZODB, persistency and transactions

• ZODB Database
  • Introduction
  • Database files
  • Object database features
  • Browsing
  • Packing database
  • Visualizing object graphs
  • Cache size
  • Integrity checks
  • Restart and cache warm-up
  • Recovering old data
• Persistent objects
  • Introduction
  • Lists and dictionaries
  • PersistentList vs. normal Python list
  • Persistent, modifications, __setattr__ and transactions
  • Up-to-date reads
  • Accessing broken objects
  • Fixing damaged objects
  • Volatile references
  • Measuring persistent object sizes
• Transactions
  • Introduction
  • Using transactions
  • Failsafe crawling and committing in batches
  • Transaction boundary events
  • Viewing transaction content and debugging transactions
  • Undoing transactions
• Object lifecycles
• Storage
  • Introduction
  • Pickling
  • Binary trees
  • Buckets
  • Storing as attribute vs. storing in BTree
  • BLOBs
  • SQL values
  • Transaction sizes
• Migrations