<s>
HAProxy	B-Language
is	O
a	O
free	B-License
and	I-License
open	I-License
source	I-License
software	I-License
that	O
provides	O
a	O
high	O
availability	O
load	B-Application
balancer	I-Application
and	O
reverse	B-General_Concept
proxy	I-General_Concept
for	O
TCP	B-Protocol
and	O
HTTP-based	O
applications	O
that	O
spreads	O
requests	O
across	O
multiple	O
servers	O
.	O
</s>
<s>
It	O
is	O
written	O
in	O
C	B-Language
and	O
has	O
a	O
reputation	O
for	O
being	O
fast	O
and	O
efficient	O
(	O
in	O
terms	O
of	O
processor	O
and	O
memory	O
usage	O
)	O
.	O
</s>
<s>
HAProxy	B-Language
is	O
used	O
by	O
a	O
number	O
of	O
high-profile	O
websites	O
including	O
GoDaddy	O
,	O
GitHub	B-Application
,	O
Bitbucket	B-Protocol
,	O
Stack	B-Error_Name
Overflow	I-Error_Name
,	O
Reddit	B-Application
,	O
Slack	B-Protocol
,	O
Speedtest.net,	O
Tumblr	B-Application
,	O
Twitter	B-Application
and	O
Tuenti	O
and	O
is	O
used	O
in	O
the	O
OpsWorks	O
product	O
from	O
Amazon	B-Application
Web	I-Application
Services	I-Application
.	O
</s>
<s>
HAProxy	B-Language
was	O
written	O
in	O
2000	O
by	O
Willy	O
Tarreau	O
,	O
a	O
core	O
contributor	O
to	O
the	O
Linux	B-Operating_System
kernel	I-Operating_System
,	O
who	O
still	O
maintains	O
the	O
project	O
.	O
</s>
<s>
In	O
2013	O
,	O
the	O
company	O
HAProxy	B-Language
Technologies	O
,	O
LLC	O
was	O
created	O
.	O
</s>
<s>
The	O
company	O
provides	O
a	O
commercial	O
offering	O
,	O
HAProxy	B-Language
Enterprise	O
and	O
appliance-based	O
application-delivery	B-Protocol
controllers	I-Protocol
named	O
ALOHA	O
.	O
</s>
<s>
HAProxy	B-Language
has	O
the	O
following	O
features	O
:	O
</s>
<s>
HAProxy	B-Language
Enterprise	O
Edition	O
is	O
an	O
enterprise-class	O
version	O
of	O
HAProxy	B-Language
that	O
includes	O
enterprise	O
suite	O
of	O
add-ons	O
,	O
expert	O
support	O
,	O
and	O
professional	O
services	O
.	O
</s>
<s>
It	O
has	O
some	O
features	O
backported	O
from	O
the	O
HAProxy	B-Language
development	O
branch	O
.	O
</s>
<s>
HAProxy	B-Language
Technologies’	O
ALOHA	O
is	O
a	O
plug-and-play	B-Device
load-balancing	O
appliance	O
that	O
can	O
be	O
deployed	O
in	O
any	O
environment	O
.	O
</s>
<s>
ALOHA	O
provides	O
a	O
graphical	B-Application
interface	I-Application
and	O
a	O
templating	O
system	O
that	O
can	O
be	O
used	O
to	O
deploy	O
and	O
configure	O
the	O
appliance	O
.	O
</s>
<s>
HAProxy	B-Language
has	O
had	O
the	O
following	O
version	O
releases	O
:	O
</s>
<s>
Servers	O
equipped	O
with	O
6	O
to	O
8	O
cores	O
generally	O
achieve	O
between	O
200000	O
and	O
500000	O
requests	O
per	O
second	O
,	O
and	O
have	O
no	O
trouble	O
saturating	O
a	O
25	O
Gbit/s	O
connection	O
under	O
Linux	B-Operating_System
.	O
</s>
