Content clone needs profiling

[taylortom]

This concerns ContentModule#clone

We need to look into speeding up the cloning process (the function needs profiling to identify any issues). Currently the process works as follows:

• Clones the root content object
• Identifies any children of the root, and recursively runs clone on those

Need to look into:

• Number of DB calls
• How the recursion works

In any case, the process will require individual insert calls for each cloned content item (to be able to map from the old _id to the new _id)

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• [ ] #36
• [ ] #39

[taylortom]

Related to the work you've been doing @chris-steele. Please update this ticket with any relevant comments (and links to other tickets).

We can close this one once we're happy we've got the suitable issues out of the investigation.

[chris-steele]

Some CPU profiling reveals a lot of time spent in the ajv package (schema compilation) during clone ops. #36 would be of benefit here as well as #39