<s>
RoadRunner	B-Language
is	O
an	O
open-source	B-Application
application	I-Application
server	O
,	O
load-balancer	B-Application
,	O
and	O
process	O
manager	O
written	O
in	O
Golang	B-Application
(	O
Go	O
)	O
and	O
implemented	O
by	O
PHP	B-Application
7	O
.	O
</s>
<s>
Development	O
on	O
RoadRunner	B-Language
began	O
in	O
2017	O
by	O
Anton	O
Titov	O
.	O
</s>
<s>
RoadRunner	B-Language
was	O
initially	O
created	O
to	O
handle	O
the	O
peak	O
loads	O
of	O
a	O
large-scale	O
PHP	B-Application
application	O
developed	O
by	O
Spiral	O
Scout	O
.	O
</s>
<s>
The	O
end	O
application	O
was	O
experiencing	O
anomaly	O
peaks	O
in	O
very	O
short	O
spurts	O
of	O
time	O
which	O
did	O
not	O
allow	O
classic	O
load	B-Application
balancing	I-Application
mechanisms	O
to	O
activate	O
.	O
</s>
<s>
Roadrunner	B-Language
uses	O
multi-threading	B-Operating_System
to	O
keep	O
a	O
PHP	B-Application
application	O
in	O
memory	O
between	O
requests	O
,	O
allowing	O
it	O
to	O
eliminate	O
boot	O
loading	O
and	O
code	O
loading	O
processes	O
and	O
reduce	O
latency	O
.	O
</s>
<s>
Improved	O
RPC	B-Operating_System
communication	O
between	O
the	O
PHP	B-Application
application	O
and	O
its	O
server	O
processes	O
gives	O
Roadrunner	B-Language
the	O
ability	O
to	O
offload	O
some	O
of	O
the	O
heavy	O
communication	O
from	O
PHP	B-Application
to	O
Go	O
.	O
</s>
<s>
RoadRunner	B-Language
is	O
a	O
free	O
open-source	B-Application
software	I-Application
under	O
an	O
MIT	B-License
license	I-License
.	O
</s>
<s>
It	O
can	O
be	O
downloaded	O
and	O
installed	O
as	O
a	O
package	O
from	O
the	O
project	O
page	O
or	O
from	O
GitHub	B-Application
.	O
</s>
