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From Kevin Burton <bur...@spinn3r.com>
Subject Re: compressed activemq messages
Date Sat, 14 Mar 2015 04:01:42 GMT
Huh.  I just ran a test and it looks like it didn’t actually save much
memory in practice.

Kevin

On Fri, Mar 13, 2015 at 2:40 PM, Kevin Burton <burton@spinn3r.com> wrote:

> Awesome!  Thanks fro the explanation.  I’ll run some memory benchmarks and
> see what type of memory efficiency this yields.
>
> Kevin
>
> On Fri, Mar 13, 2015 at 2:25 PM, Tim Bain <tbain@alumni.duke.edu> wrote:
>
>> The first time the message crosses a network link with
>> useCompression=true,
>> the body of the message will be compressed.  It will stay compressed until
>> it is read (by a consumer, by browsing the queue on the broker, by an
>> embedded Camel route that examines the body, etc.), after which it will
>> stay uncompressed until it crosses another network link where
>> useCompression=true.
>>
>> So if your producers send messages to the broker across a connection where
>> useCompression=true and you don't do anything with the message on the
>> broker, its body will be compressed for the entire time it's in the
>> broker's memory.  Headers, however, are always uncompressed.
>>
>> Tim
>>
>> On Fri, Mar 13, 2015 at 3:11 PM, Kevin Burton <burton@spinn3r.com> wrote:
>>
>> > I’m confused about activemq message compression:
>> >
>> > http://activemq.apache.org/connection-configuration-uri.html
>> >
>> > useCompression
>> > > Enables the use of compression of the message bodies
>> >
>> > Is this just wire protocol compression or is this compression of the
>> > objects in memory?
>> >
>> > It would be interesting to have the messages (and headers) compressed in
>> > memory to minimize JVM heap usage within the broker.
>> >
>> > Kevin
>> >
>> >
>> > --
>> >
>> > Founder/CEO Spinn3r.com
>> > Location: *San Francisco, CA*
>> > blog: http://burtonator.wordpress.com
>> > … or check out my Google+ profile
>> > <https://plus.google.com/102718274791889610666/posts>
>> > <http://spinn3r.com>
>> >
>>
>
>
>
> --
>
> Founder/CEO Spinn3r.com
> Location: *San Francisco, CA*
> blog: http://burtonator.wordpress.com
> … or check out my Google+ profile
> <https://plus.google.com/102718274791889610666/posts>
> <http://spinn3r.com>
>
>


-- 

Founder/CEO Spinn3r.com
Location: *San Francisco, CA*
blog: http://burtonator.wordpress.com
… or check out my Google+ profile
<https://plus.google.com/102718274791889610666/posts>
<http://spinn3r.com>

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