<s>
Redux	B-Language
is	O
an	O
open-source	B-Application
JavaScript	B-Language
library	I-Language
for	O
managing	O
and	O
centralizing	O
application	B-Application
state	I-Application
.	O
</s>
<s>
It	O
is	O
most	O
commonly	O
used	O
with	O
libraries	O
such	O
as	O
React	B-Application
or	O
Angular	B-Language
for	O
building	O
user	B-Application
interfaces	I-Application
.	O
</s>
<s>
Similar	O
to	O
(	O
and	O
inspired	O
by	O
)	O
Facebook	O
's	O
Flux	O
architecture	O
,	O
it	O
was	O
created	O
by	O
Dan	B-Language
Abramov	I-Language
and	O
Andrew	O
Clark	O
.	O
</s>
<s>
Redux	B-Language
is	O
a	O
small	O
library	O
with	O
a	O
simple	O
,	O
limited	O
API	B-Application
designed	O
to	O
be	O
a	O
predictable	O
container	O
for	O
application	B-Application
state	I-Application
.	O
</s>
<s>
It	O
operates	O
in	O
a	O
similar	O
fashion	O
to	O
a	O
reducing	O
function	O
,	O
a	O
functional	B-Language
programming	I-Language
concept	O
.	O
</s>
<s>
Redux	B-Language
was	O
created	O
by	O
Dan	B-Language
Abramov	I-Language
and	O
Andrew	O
Clark	O
in	O
2015	O
.	O
</s>
<s>
Abramov	O
began	O
writing	O
the	O
first	O
Redux	B-Language
implementation	O
while	O
preparing	O
for	O
a	O
conference	O
talk	O
at	O
React	B-Application
Europe	O
on	O
hot	O
reloading	O
.	O
</s>
<s>
"	O
I	O
was	O
thinking	O
about	O
Flux	O
as	O
a	O
reduce	O
operation	O
over	O
time	O
...	O
your	O
stores	O
,	O
they	O
accumulate	O
state	B-Application
in	O
response	O
to	O
these	O
actions	O
.	O
</s>
<s>
Among	O
other	O
things	O
,	O
he	O
credits	O
Clark	O
with	O
making	O
the	O
Redux	B-Language
ecosystem	O
of	O
tools	O
possible	O
,	O
helping	O
to	O
come	O
up	O
with	O
a	O
coherent	O
API	B-Application
,	O
implementing	O
extension	O
points	O
such	O
as	O
middleware	B-General_Concept
and	O
store	O
enhancers	O
.	O
</s>
<s>
By	O
mid	O
2016	O
,	O
Abramov	O
had	O
joined	O
the	O
React	B-Application
team	O
and	O
passed	O
the	O
primary	O
maintainership	O
on	O
to	O
Mark	O
Erikson	O
and	O
Tim	O
Dorr	O
.	O
</s>
<s>
In	O
February	O
2019	O
,	O
useReducer	O
was	O
introduced	O
as	O
a	O
React	B-Application
hook	O
in	O
the	O
16.8	O
release	O
.	O
</s>
<s>
It	O
provides	O
an	O
API	B-Application
that	O
is	O
consistent	O
with	O
Redux	B-Language
,	O
enabling	O
developers	O
to	O
create	O
Redux-like	O
stores	O
that	O
are	O
local	O
to	O
component	O
states	O
.	O
</s>
