<s>
MMCache	B-Protocol
,	O
also	O
known	O
as	O
Turck	O
MMCache	B-Protocol
,	O
is	O
a	O
PHP	B-Language
accelerator	I-Language
,	O
or	O
an	O
extension	O
to	O
PHP	B-Application
meant	O
to	O
improve	O
performance	O
.	O
</s>
<s>
It	O
is	O
structured	O
as	O
a	O
simple	O
proxy	B-Application
server	I-Application
between	O
the	O
web	B-Application
server	I-Application
and	O
the	O
web	B-Application
browser	I-Application
.	O
</s>
<s>
Its	O
most	O
important	O
feature	O
is	O
using	O
memcached	B-Application
for	O
caching	O
the	O
data	O
in	O
memory	O
.	O
</s>
<s>
MMCache	B-Protocol
is	O
free	B-Application
software	I-Application
released	O
under	O
the	O
GNU	B-License
GPL	I-License
2.0	O
.	O
</s>
<s>
A	O
newer	O
version	O
of	O
MMCache	B-Protocol
,	O
MMCache-LB	O
,	O
has	O
an	O
option	O
to	O
connect	O
more	O
web	B-Application
servers	I-Application
behind	O
the	O
proxy	O
,	O
with	O
load	B-Application
balancing	I-Application
between	O
them	O
.	O
</s>
<s>
Development	O
work	O
on	O
MMCache	B-Protocol
was	O
discontinued	O
in	O
2009	O
,	O
and	O
the	O
code	O
was	O
forked	O
into	O
the	O
eAccelerator	B-Language
application	O
.	O
</s>
