Hi All,
 
For a DMS, I want to replace MySQL with Cassandra to store file/folder nodes. 
Current I use adjacency list model to stores nodes hierarchy. The shortage of 
the adjacency list model is the expensive traversal cost. While I want to 
navigate the entire workspace or folder in hierarchy, I have to execute 
multiple queries (for each sub folder). In addition, special care must be taken 
when deleting nodes because of the potential for orphaning an entire sub-tree 
in the process (delete a folder and all of its children may be orphaned). How 
to design to store files/folders'node as tree structure in Cassandra?
 
Thanks,
-Brink

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