<s>
Sidekiq	B-Application
is	O
an	O
open	O
source	O
job	B-General_Concept
scheduler	I-General_Concept
written	O
in	O
Ruby	B-Language
.	O
</s>
<s>
Sidekiq	B-Application
by	O
default	O
does	O
n't	O
do	O
scheduling	O
,	O
it	O
only	O
executes	O
jobs	O
.	O
</s>
<s>
Sidekiq	B-Application
uses	O
Redis	B-Operating_System
as	O
an	O
in-memory	O
data	O
structure	O
store	O
and	O
is	O
written	O
in	O
Ruby	B-Language
.	O
</s>
<s>
It	O
can	O
be	O
used	O
with	O
Resque	O
,	O
another	O
Redis	B-Operating_System
based	O
job	B-General_Concept
scheduler	I-General_Concept
,	O
or	O
more	O
commonly	O
as	O
a	O
standalone	O
product	O
.	O
</s>
<s>
Sidekiq	B-Application
reads	O
jobs	O
from	O
a	O
Redis	B-Operating_System
queue	O
,	O
using	O
the	O
First	B-Operating_System
In	I-Operating_System
First	I-Operating_System
Out	I-Operating_System
(	O
FIFO	B-Operating_System
)	O
model	O
,	O
to	O
process	O
jobs	O
.	O
</s>
<s>
Sidekiq	B-Application
is	O
described	O
as	O
a	O
“	O
well-known	O
queue	O
processing	O
software	O
”	O
.	O
</s>
<s>
It	O
's	O
used	O
by	O
Ruby	B-Language
applications	O
needing	O
to	O
run	O
tasks	O
in	O
the	O
background	O
,	O
and	O
not	O
in	O
the	O
web	O
requests	O
handling	O
time	O
,	O
like	O
Mastodon	B-Application
,	O
Diaspora	O
,	O
GitLab	B-Application
and	O
Discourse	B-Protocol
.	O
</s>
<s>
Sidekiq	B-Application
is	O
also	O
used	O
to	O
submit	O
threads	O
to	O
the	O
phage	O
search	O
tool	O
.	O
</s>
