Identity/AttachedServices/Architecture: Difference between revisions

The workload will be pretty write-heavy. Accounts with just a single device (i.e. just backup, not sync) are pretty common, and these will be almost entirely writes. Some datatypes are more "hot" than others (e.g. open-tabs are updated with every click, while bookmarks only change when the user specifically creates or modifies one), so we might want to mark the collections with hints that tell the server how to best manage the records.