These are expensive, read-only web requests. Unfortunately,
middleware adds writes, and we currently run with view-level
transactions enabled by default. Holding those long transactions
open has caused extra load on the database and been our largest
sources of django.db.utils:OperationError exceptions.
This has been particularly noticeable as we start deploying the
new Courseware MFE, which uses the BlocksInCourseView more
frequently.
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