This adds a `MetadataPathPrefix` func to any drive related handlers. And in case of exchange, we will create a path. These generated paths, in both scenario is what now gets passed to `MakeMetadataCollection` instead of passing the different values.
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* https://github.com/alcionai/corso/issues/4154
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* https://github.com/alcionai/corso/issues/4154
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This PR optimizes memory & cache refresh time for URL cache. The cache only makes use of a small subset of drive item properties, namely ID, deleted, file, folder, content download URL. We have found that reducing the number of query properties has a sizable impact on corso mem usage. This is especially relevant for large scale backups.
See below graph for a comparison between original delta queries & mod. Note that this is with corso instrumentations to show comparisons side by side in the same run.
- Reading this graph
- We are doing 3 orig delta queries followed right after by 3 mod. Vertical lines are delta query spans.
Originally, this investigation was done to improve mem usage for scale backups. But we also found that url cache delta query time drops by 22% with this PR. This is because we are now transferring & processing fewer bytes.
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I've needed to catch gotchas that arise from contributors adding a value in the middle of an iota list, not to mention have dealt with prior bugs that happened the same way, now too many times to feel safe about its usage.
This PR removes the use of iota from all const declarations. The intent is to not allow the use of iota within the codebase.
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* #3993
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A Stream is a continuous transmission of data.
An item is a single structure. Crossing the two
definitions generates confusion.
Primarily code movement/renaming. Though there
is also some reduction/replacement of structs
where we'd made a variety of testable Item implementations
instead of re-using the generic mock.
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Only code movement, no code changes.
Moved services to `/internal/m365/services/{onedrive,sharepoint,exchange}`
Moved collections to `/internal/m365/collection/{drive,site}`
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