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improve comments
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@ -184,18 +184,18 @@ class MonthlyActiveUsersStore(SQLBaseStore):
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"upsert_monthly_active_user", self.upsert_monthly_active_user_txn,
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user_id
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)
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# Considered pushing cache invalidation down into txn method, but
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# did not because txn is not a LoggingTransaction. This means I could not
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# call txn.call_after(). Therefore cache is altered in background thread
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# and calls from elsewhere to user_last_seen_monthly_active and
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# get_monthly_active_count fail with ValueError in
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# synapse/util/caches/descriptors.py#check_thread
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if is_insert:
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self.user_last_seen_monthly_active.invalidate((user_id,))
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self.get_monthly_active_count.invalidate(())
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def upsert_monthly_active_user_txn(self, txn, user_id):
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"""Updates or inserts monthly active user member
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Note that, after calling this method, it will generally be necessary
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to invalidate the caches on user_last_seen_monthly_active and
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get_monthly_active_count. We can't do that here, because we are running
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in a database thread rather than the main thread, and we can't call
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txn.call_after because txn may not be a LoggingTransaction.
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Args:
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txn (cursor):
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