<s>
Puma	B-Application
is	O
an	O
HTTP	B-Application
web	I-Application
server	I-Application
derived	O
from	O
Mongrel	B-Application
and	O
written	O
by	O
Evan	O
Phoenix	O
.	O
</s>
<s>
It	O
stresses	O
speed	O
and	O
efficient	O
use	O
of	O
memory	B-General_Concept
.	O
</s>
<s>
Puma	B-Application
is	O
the	O
web	B-Application
server	I-Application
shipped	O
with	O
Mastodon	B-Application
and	O
recommended	O
by	O
the	O
Heroku	B-General_Concept
hosting	O
provider	O
as	O
a	O
replacement	O
for	O
Unicorn	B-Application
.	O
</s>
<s>
Deliveroo	O
published	O
a	O
benchmark	O
comparing	O
the	O
two	O
servers	O
and	O
concluded	O
“	O
Puma	B-Application
performs	O
better	O
than	O
Unicorn	B-Application
in	O
all	O
tests	O
that	O
were	O
either	O
heavily	O
IO-bound	O
or	O
that	O
interleaved	O
IO	O
and	O
CPU	O
work	O
”	O
,	O
but	O
that	O
Unicorn	B-Application
was	O
still	O
slightly	O
better	O
performing	O
in	O
situations	O
where	O
CPU	O
load	O
was	O
the	O
limiting	O
factor	O
.	O
</s>
