On Mon, Apr 5, 2010 at 6:57 PM, Bruce Snyder <bruce.sny...@gmail.com> wrote:
> On Mon, Apr 5, 2010 at 2:48 PM, Jim Lloyd <jll...@silvertailsystems.com> > wrote: > > I'm in the process of building a network of brokers in which some of the > > links are geographically distributed. These links will use the SSL > transport > > for reasons of security, but we also want to use compression to minimize > > bandwidth usage over the WAN links. I've searched the available > > documentation and so far haven't found a definitive source that tells > > whether the SSL Transport uses rfc3749 compression or not. Can anyone > here > > give me a definitive answer? If it is supported, which configuration > options > > are required? > > Not only is TLS compression is not supported in ActiveMQ, but I don't > think it's supported in Java yet. Do you know of an implementation? > No, I don't, but we do the majority of our development in C++ so even though I hadn't found an implementation in my searches so far I still had hope that one might exist. Thanks for the clarification. > > > It also appears that there is an option to use message level compression. > If > > compression is available on the SSL transport stream, I expect we would > want > > to ensure that message compression is turned off to allow the transport > > level compression to have more context. The only documentation I have > found > > for this was for ActiveMQ 3, which implies that doMessageCompression > > is trueby default. Is that still the default with ActiveMQ 5? > > Message level compression can be enabled on a ConnectionFactory or a > Connection via the useCompression property. See also the > useCompression option on the URI: > > http://activemq.apache.org/connection-configuration-uri.html Thanks. I see the default for useCompression given here is now false. We'll experiment and see if this gives us any significant improvement. > -Jim
