Hi

I just wanted to point out to Jakub's new book (which is free) that
talks about both ActiveMQ and Kafka and how they are different
http://www.jakubkorab.net/2017/06/new-book-understanding-message-brokers.html


On Mon, Jun 5, 2017 at 1:45 PM, Christopher Shannon
<christopher.l.shan...@gmail.com> wrote:
> You can't compare Kafka to a JMS type message broker.  Kafka is completely
> different.
>
> Kafka is a system that scales horizontally and is essentially a big
> write-ahead log and breaks up the topics into partitions across many
> servers so they can be scanned concurrently.   This allows insane message
> rates but the trade off is that the feature set is much less...there are no
> features like message acknowledgement (messages are not deleted, they are
> aged off and a client can seek to any point in the log), message
> expiration, scheduled messages, transactions (although transaction support
> is currently being worked on) etc which offloads a lot of work that a
> typical message broker has to do.   Kafka clusters can scale to thousands
> of nodes and handle millions of messages per second.
>
> Any standalone broker like ActiveMQ, Artemis, etc is going to be measured
> at a rate of thousands per second.
>
> On Sat, Jun 3, 2017 at 3:13 PM, Clebert Suconic <clebert.suco...@gmail.com>
> wrote:
>
>> For the use case you're after. (No hard syncs). Mmap is a good candidate.
>> Probably better.
>>
>>
>> Libaio was engineered the case where you hard sync with callbacks from the
>> Linux os
>> On Sat, Jun 3, 2017 at 12:46 PM wangqinghuan <1095193...@qq.com> wrote:
>>
>> > hi clebertsuconic:
>> > i read the blog
>> > https://activemq.apache.org/artemis/docs/2.1.0/persistence.html
>> > By default Apache ActiveMQ Artemis will try and use an AIO journal.But it
>> > seems like that Mmap is also a good implemention.which one gives more
>> > performance?
>> >
>> >
>> >
>> > --
>> > View this message in context:
>> > http://activemq.2283324.n4.nabble.com/why-AvtiveMq-is-slowly-than-Kafka-
>> tp4726911p4726992.html
>> > Sent from the ActiveMQ - User mailing list archive at Nabble.com.
>> >
>> --
>> Clebert Suconic
>>



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Claus Ibsen
-----------------
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