<s>
The	O
HTTP	B-Protocol
response	O
status	B-Protocol
code	I-Protocol
303	B-Protocol
See	I-Protocol
Other	I-Protocol
is	O
a	O
way	O
to	O
redirect	O
web	O
applications	O
to	O
a	O
new	O
URI	B-Protocol
,	O
particularly	O
after	O
a	O
HTTP	B-Protocol
POST	I-Protocol
has	O
been	O
performed	O
,	O
since	O
RFC	B-Protocol
2616	I-Protocol
(	O
HTTP	B-Protocol
1.1	I-Protocol
)	O
.	O
</s>
<s>
According	O
to	O
RFC	O
7231	O
,	O
which	O
obsoletes	O
RFC	B-Protocol
2616	I-Protocol
,	O
"	O
A	O
303	O
response	O
to	O
a	O
GET	O
request	O
indicates	O
that	O
the	O
origin	O
server	O
does	O
not	O
have	O
a	O
representation	O
of	O
the	O
target	O
resource	O
that	O
can	O
be	O
transferred	O
by	O
the	O
server	O
over	O
HTTP	B-Protocol
.	I-Protocol
</s>
<s>
However	O
,	O
the	O
Location	B-Protocol
field	O
value	O
refers	O
to	O
a	O
resource	O
that	O
is	O
descriptive	O
of	O
the	O
target	O
resource	O
,	O
such	O
that	O
making	O
a	O
retrieval	O
request	O
on	O
that	O
other	O
resource	O
might	O
result	O
in	O
a	O
representation	O
that	O
is	O
useful	O
to	O
recipients	O
without	O
implying	O
that	O
it	O
represents	O
the	O
original	O
target	O
resource.	O
"	O
</s>
<s>
This	O
status	B-Protocol
code	I-Protocol
should	O
be	O
used	O
with	O
the	O
location	B-Protocol
header	O
,	O
as	O
described	O
below	O
.	O
</s>
<s>
If	O
a	O
server	O
responds	O
to	O
a	O
POST	O
or	O
other	O
non-idempotent	O
request	O
with	O
a	O
303	B-Protocol
See	I-Protocol
Other	I-Protocol
response	O
and	O
a	O
value	O
for	O
the	O
location	B-Protocol
header	O
,	O
the	O
client	O
is	O
expected	O
to	O
obtain	O
the	O
resource	O
mentioned	O
in	O
the	O
location	B-Protocol
header	O
using	O
the	O
GET	O
method	O
;	O
to	O
trigger	O
a	O
request	O
to	O
the	O
target	O
resource	O
using	O
the	O
same	O
method	O
,	O
the	O
server	O
is	O
expected	O
to	O
provide	O
a	O
307	O
Temporary	O
Redirect	O
response	O
.	O
</s>
<s>
303	B-Protocol
See	I-Protocol
Other	I-Protocol
has	O
been	O
proposed	O
as	O
one	O
way	O
of	O
responding	O
to	O
a	O
request	O
for	O
a	O
URI	B-Protocol
that	O
identifies	O
a	O
real-world	O
object	O
according	O
to	O
Semantic	O
Web	O
theory	O
(	O
the	O
other	O
being	O
the	O
use	O
of	O
hash	O
URIs	B-Protocol
)	O
.	O
</s>
<s>
Instead	O
the	O
server	O
would	O
issue	O
a	O
303	B-Protocol
See	I-Protocol
Other	I-Protocol
response	O
which	O
redirected	O
to	O
a	O
separate	O
URI	B-Protocol
providing	O
a	O
description	O
of	O
the	O
person	O
Alice	O
.	O
</s>
<s>
303	B-Protocol
See	I-Protocol
Other	I-Protocol
can	O
be	O
used	O
for	O
other	O
purposes	O
.	O
</s>
<s>
For	O
example	O
,	O
when	O
building	O
a	O
RESTful	B-Protocol
web	B-General_Concept
API	I-General_Concept
that	O
needs	O
to	O
return	O
to	O
the	O
caller	O
immediately	O
but	O
continue	O
executing	O
asynchronously	O
(	O
such	O
as	O
a	O
long-lived	O
image	O
conversion	O
)	O
,	O
the	O
web	B-General_Concept
API	I-General_Concept
can	O
provide	O
a	O
status	O
check	O
URI	B-Protocol
that	O
allows	O
the	O
original	O
client	O
who	O
requested	O
the	O
conversion	O
to	O
check	O
on	O
the	O
conversion	O
's	O
status	O
.	O
</s>
<s>
This	O
status	O
check	O
web	B-General_Concept
API	I-General_Concept
should	O
return	O
303	B-Protocol
See	I-Protocol
Other	I-Protocol
to	O
the	O
caller	O
when	O
the	O
task	O
is	O
complete	O
,	O
along	O
with	O
a	O
URI	B-Protocol
from	O
which	O
to	O
retrieve	O
the	O
result	O
in	O
the	O
Location	B-Protocol
HTTP	B-Protocol
header	I-Protocol
field	O
.	O
</s>
