<s>
In	O
computing	O
,	O
Oracle	B-Application
Coherence	I-Application
(	O
originally	O
Tangosol	O
Coherence	O
)	O
is	O
a	O
Java-based	O
distributed	B-Operating_System
cache	I-Operating_System
and	O
in-memory	B-General_Concept
data	B-General_Concept
grid	I-General_Concept
.	O
</s>
<s>
It	O
is	O
claimed	O
to	O
be	O
"	O
intended	O
for	O
systems	O
that	O
require	O
high	O
availability	O
,	O
high	O
scalability	B-Architecture
and	O
low	O
latency	O
,	O
particularly	O
in	O
cases	O
when	O
traditional	O
relational	B-Application
database	I-Application
management	I-Application
systems	I-Application
provide	O
insufficient	O
throughput	O
,	O
or	O
insufficient	O
performance.	O
"	O
</s>
<s>
Oracle	B-Application
Corporation	I-Application
acquired	O
Tangosol	O
Inc.	O
,	O
the	O
original	O
owner	O
of	O
the	O
product	O
,	O
in	O
April	O
2007	O
,	O
at	O
which	O
point	O
it	O
had	O
more	O
than	O
100	O
direct	O
customers	O
.	O
</s>
<s>
Tangosol	O
Coherence	O
was	O
also	O
embedded	O
in	O
a	O
number	O
of	O
other	O
companies	O
 '	O
software	O
products	O
,	O
some	O
of	O
which	O
belonged	O
to	O
Oracle	B-Application
Corporation	I-Application
's	O
competitors	O
.	O
</s>
<s>
Coherence	O
provides	O
a	O
variety	O
of	O
mechanisms	O
to	O
integrate	O
with	O
other	O
services	O
using	O
TopLink	B-Library
,	O
Java	B-Language
Persistence	I-Language
API	I-Language
,	O
Oracle	B-Application
Golden	I-Application
Gate	I-Application
and	O
other	O
platforms	O
using	O
APIs	B-Application
provided	O
by	O
Coherence	O
.	O
</s>
<s>
Coherence	O
can	O
be	O
used	O
to	O
manage	O
HTTP	B-Protocol
sessions	B-Protocol
via	O
Coherence*Web	O
,	O
in	O
which	O
application	O
services	O
such	O
as	O
Oracle	B-Language
WebLogic	I-Language
Server	I-Language
,	O
IBM	B-Language
WebSphere	I-Language
,	O
Apache	B-Language
Tomcat	I-Language
and	O
others	O
are	O
claimed	O
to	O
get	O
the	O
same	O
performance	O
,	O
fault	O
tolerance	O
,	O
and	O
scalability	B-Architecture
as	O
data	O
.	O
</s>
<s>
In	O
the	O
summer	O
of	O
2020	O
,	O
Coherence	O
Community	O
Edition	O
was	O
released	O
as	O
open	B-License
source	I-License
on	O
GitHub	B-Application
.	O
</s>
<s>
Some	O
Coherence	O
usage	O
patterns	O
are	O
also	O
open	B-License
source	I-License
and	O
are	O
listed	O
and	O
supported	O
through	O
the	O
Oracle	B-Application
Coherence	I-Application
incubator	O
.	O
</s>
<s>
These	O
patterns	O
implement	O
features	O
such	O
as	O
messaging	O
,	O
work	O
distribution	O
and	O
data	B-Architecture
replication	I-Architecture
across	O
wide	O
area	O
networks	O
with	O
Coherence	O
.	O
</s>
