<s>
Apache	B-Language
ActiveMQ	I-Language
is	O
an	O
open	B-Application
source	I-Application
message	B-General_Concept
broker	I-General_Concept
written	O
in	O
Java	B-Language
together	O
with	O
a	O
full	O
Java	B-Language
Message	I-Language
Service	I-Language
(	O
JMS	O
)	O
client	O
.	O
</s>
<s>
Supported	O
clients	O
include	O
Java	B-Language
via	O
JMS	O
1.1	O
as	O
well	O
as	O
several	O
other	O
"	O
cross	O
language	O
"	O
clients	O
.	O
</s>
<s>
The	O
communication	O
is	O
managed	O
with	O
features	O
such	O
as	O
computer	B-Architecture
clustering	I-Architecture
and	O
ability	O
to	O
use	O
any	O
database	O
as	O
a	O
JMS	O
persistence	B-Application
provider	O
besides	O
virtual	B-Architecture
memory	I-Architecture
,	O
cache	B-General_Concept
,	O
and	O
journal	B-General_Concept
persistency	O
.	O
</s>
<s>
There	O
's	O
another	O
broker	O
under	O
the	O
ActiveMQ	B-Language
umbrella	O
code-named	O
Artemis	O
.	O
</s>
<s>
It	O
is	O
based	O
on	O
the	O
HornetQ	B-Application
code-base	O
which	O
was	O
donated	O
from	O
the	O
JBoss	O
community	O
to	O
the	O
Apache	B-Language
ActiveMQ	I-Language
community	O
in	O
2015	O
.	O
</s>
<s>
Artemis	O
is	O
the	O
"	O
next	O
generation	O
"	O
broker	O
from	O
ActiveMQ	B-Language
and	O
will	O
ultimately	O
become	O
the	O
next	O
major	O
version	O
of	O
ActiveMQ	B-Language
.	O
</s>
<s>
The	O
ActiveMQ	B-Language
project	O
was	O
originally	O
created	O
by	O
its	O
founders	O
from	O
LogicBlaze	O
in	O
2004	O
,	O
as	O
an	O
open	B-Application
source	I-Application
message	B-General_Concept
broker	I-General_Concept
,	O
hosted	O
by	O
CodeHaus	O
.	O
</s>
<s>
The	O
code	O
and	O
ActiveMQ	B-Language
trademark	O
were	O
donated	O
to	O
the	O
Apache	O
Software	O
Foundation	O
in	O
2007	O
,	O
where	O
the	O
founders	O
continued	O
to	O
develop	O
the	O
codebase	O
with	O
the	O
extended	O
Apache	O
community	O
.	O
</s>
<s>
ActiveMQ	B-Language
employs	O
several	O
modes	O
for	O
high	O
availability	O
,	O
including	O
both	O
file-system	O
and	O
database	O
row-level	O
locking	O
mechanisms	O
,	O
sharing	O
of	O
the	O
persistence	B-Application
store	O
via	O
a	O
shared	O
filesystem	O
,	O
or	O
true	O
replication	O
using	O
Apache	B-Language
ZooKeeper	I-Language
.	O
</s>
<s>
ActiveMQ	B-Language
supports	O
a	O
relatively	O
large	O
number	O
of	O
transport	O
protocols	O
,	O
including	O
OpenWire	B-Application
,	O
STOMP	B-Application
,	O
MQTT	B-Application
,	O
AMQP	B-Operating_System
,	O
REST	B-Protocol
,	O
and	O
WebSockets	B-Protocol
.	O
</s>
<s>
ActiveMQ	B-Language
is	O
used	O
in	O
enterprise	B-Application
service	I-Application
bus	I-Application
implementations	O
such	O
as	O
Apache	B-Language
ServiceMix	I-Language
and	O
Mule	B-Language
.	O
</s>
<s>
Other	O
projects	O
using	O
ActiveMQ	B-Language
include	O
Apache	B-Language
Camel	I-Language
and	O
Apache	B-Language
CXF	I-Language
in	O
SOA	O
infrastructure	O
projects	O
.	O
</s>
<s>
Coinciding	O
with	O
the	O
release	O
of	O
Apache	B-Language
ActiveMQ	I-Language
5.3	O
,	O
the	O
world	O
's	O
first	O
results	O
for	O
the	O
SPECjms2007	O
industry	O
standard	O
benchmark	O
were	O
announced	O
.	O
</s>
<s>
The	O
results	O
cover	O
different	O
topologies	O
to	O
analyze	O
the	O
scalability	O
of	O
Apache	B-Language
ActiveMQ	I-Language
in	O
two	O
dimensions	O
.	O
</s>
<s>
Used	O
in	O
enterprise	O
software	O
,	O
Apache	O
offers	O
limited	O
ActiveMQ	B-Language
support	O
on	O
a	O
volunteer	O
basis	O
.	O
</s>
<s>
Commercial	O
companies	O
specializing	O
in	O
ActiveMQ	B-Language
are	O
recommended	O
for	O
users	O
needing	O
more	O
extensive	O
support	O
.	O
</s>
