nkurihar commented on issue #1352: Delete inactive subscriptions automatically URL: https://github.com/apache/incubator-pulsar/pull/1352#issuecomment-372565125 @merlimat > I know it's not exactly the same but the effect is very similar to TTL on messages. The aim is the same: to keep the backlog size as low as possible. However I think auto-unsub achieves less storage usage than TTL since the inactive subscriptions are removed and there are no messages to retain, while "living"(not expired) messages always remain by TTL.
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