<s>
Dancer	B-Language
is	O
an	O
open	B-Application
source	I-Application
lightweight	O
web	B-Application
application	I-Application
framework	I-Application
written	O
in	O
Perl	B-Language
and	O
inspired	O
by	O
Ruby	B-Language
's	I-Language
Sinatra	B-Application
.	O
</s>
<s>
In	O
April	O
2011	O
,	O
Dancer	B-Language
was	O
rewritten	O
from	O
scratch	O
and	O
released	O
as	O
Dancer2	B-Language
.	O
</s>
<s>
Development	O
of	O
Dancer1	O
was	O
at	O
first	O
frozen	O
,	O
but	O
was	O
later	O
continued	O
to	O
maintain	O
backward	B-General_Concept
compatibility	I-General_Concept
for	O
existing	O
apps	O
.	O
</s>
<s>
Dancer	B-Language
is	O
developed	O
through	O
GitHub	B-Application
,	O
with	O
stable	O
releases	O
available	O
via	O
CPAN	B-Language
.	O
</s>
<s>
Dancer2	B-Language
is	O
released	O
as	O
a	O
separate	O
module	O
.	O
</s>
<s>
Unlike	O
other	O
frameworks	O
such	O
as	O
Catalyst	B-Language
,	O
Dancer	B-Language
only	O
requires	O
a	O
handful	O
of	O
CPAN	B-Language
modules	O
and	O
is	O
very	O
self-contained	O
.	O
</s>
<s>
Dancer	B-Language
includes	O
a	O
standalone	O
development	O
server	O
that	O
can	O
be	O
used	O
for	O
developing	O
and	O
testing	O
applications	O
.	O
</s>
<s>
Dancer	B-Language
supports	O
the	O
PSGI	O
specification	O
,	O
and	O
can	O
thus	O
be	O
run	O
on	O
any	O
compliant	O
PSGI	O
server	O
,	O
including	O
Plack	B-Language
,	O
uWSGI	B-Application
or	O
.	O
</s>
<s>
Since	O
most	O
parts	O
of	O
Dancer	B-Language
are	O
abstracted	O
and	O
has	O
a	O
plugin	O
architecture	O
,	O
extending	O
Dancer	B-Language
is	O
fairly	O
straightforward	O
,	O
and	O
a	O
thriving	O
community	O
has	O
sprung	O
up	O
around	O
building	O
these	O
extensions	O
.	O
</s>
<s>
Dancer	B-Language
features	O
a	O
lightweight	O
object	O
system	O
,	O
exception	O
throwing	O
similar	O
to	O
Try::Tiny	O
,	O
and	O
is	O
fast	O
,	O
especially	O
in	O
CGI	O
environments	O
.	O
</s>
