[rabbitmq-discuss] LIFO queue
bra at fsn.hu
Mon Apr 28 09:22:15 BST 2014
On 04/19/10 13:59, Martin Sustrik wrote:
>> Hi, I'm just learning about messaging and I need to create a LIFO
>> message queue. I looked into it with ApacheMQ and it is apparently not
>> easily possible.
>> Does AMQP/RabbitMQ support LIFO / FILO?
> No. There's no such thing in AMQP. You won't find it even in non-AMQP
> It would be extremely interesting to know a bit more about your use case
Although the message is quite old -and unanswered-, I can tell you about
I collect RADIUS accounting messages via queues for maintaining historic
data (who used what port/IP) and actual data (who are using them now) too.
Here, data with growing age becomes of less importance in the meaning of
how quickly it gets processed.
If the queue is FIFO and contains multi million records (due to
something going bad) and processing it takes a half day, it means for a
half day, I won't be able to serve actual session data, because they are
at the tail of the queue, while the processing still happens on its
head, which is possibly history now.
With a LIFO queue, if the queue grows, history gets into the background
and actual data in the foreground.
Meaning: the actual data can be served with high possibility, while
historic data will be eventually processed, which is the desired effect.
Hence, I would need a LIFO queue in RabbitMQ too. :)
More information about the rabbitmq-discuss