DesignNotes

Design Notes

The following are links to various notes about the design and implementation of various Subversion features and enhancements.

• Authz Improvements - about the authzperf branch
  
• LocalMoves - functional design for client-side move and rename tracking
  
• ResolvingIncomingMoves - notes about resolving incoming moves with the new conflict resolver
  
• Editor, version 2 (Ev2) - Updating the way we transmit difference within Subversion
  
• MoveDev How to Add Moves to Svn Move Development
  • MoveDev Ev2MovesDesign Ev2 proposal
  • MoveDev Ev15MovesDesign Ev1+ proposal
  • MoveDev MoveTrackingUpdateEditor
  • MoveDev MovesOverDeltaEditor
  • MoveDev ApiChangesForMove
  • MoveDev MovesInFSFS
  • MoveDev MovePhase1Plan
    
• EncryptedPasswordStorage - (forced and/or turn-key) encrypted storage of cached client-side authentication credentials
  • Also see MasterPassphrase
    
• FS2 - Thoughts about a re-designed and flexible backend storage system, to replace both libsvn_fs_base and libsvn_fs_fs
  • StarDelta is a potential low-level algorithm to be used in the FSFS2 backend
    
• InheritedProperties - node properties that apply to descendants too
• In-Repo Authz - Storing Authz files inside a repository
• MergeinfoCommand - 'svn merginfo' shows a summary diagram by default
• MergeLimits - thoughts on the nature of the merge use-case
• MtimePreservation - storing "modified time" for files in a versioned property
• MultiLayerMoves - recording multiple layers of moves in the working copy
• NodesOperations - understanding WCNG NODES table
• Repository Dictated Configuration - server-dictated configuration via inheritable props
• SavePoints - implementation of stored working copy state to allow rolling back to such a state, stash, and local commits.
• SymmetricMerge - understanding sync, reintegrate, catch-up, cherry-pick merges
• UnicodeNormalization - managing differences in Unicode character composition in paths and mergeinfo
  

Not Yet Written

• BetterExternals - ideas for something as useful but less crufty
  

Abandoned

Designs that were discussed but never implemented. These remain here for archival purposes.

• ServerDictatedConfiguration - server-dictated configuration of client-side behavior (abandoned in favor of Repository Dictated Configuration)