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From Lionel Cons <>
Subject Per-destination queue quota
Date Fri, 29 Jul 2011 05:50:38 GMT

We have to protect our brokers from misbehaving clients. The most
simple case is a consumer that does not consume the messages in its
queues (or durable subscriptions), wasting disk space, until it
affects other clients (disk/partition full).

Message expiration does help but only really works with constant
message rates and sizes.

It would be very good to have per-destinations quotas (at least using
a message count but a total message size would be useful too) and have
the broker deleting the oldest not yet consumed messages when needed.
This way, the queues with quotas would become some kind of rings,
using limited disk space.

Do you think it's something Apollo could do?



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