<s>
CockroachDB	B-Operating_System
is	O
a	O
commercial	O
distributed	B-Language
SQL	I-Language
database	B-Application
management	I-Application
system	I-Application
developed	O
by	O
Cockroach	B-Operating_System
Labs	I-Operating_System
.	O
</s>
<s>
Cockroach	B-Operating_System
Labs	I-Operating_System
was	O
founded	O
in	O
2015	O
by	O
ex-Google	O
employees	O
Spencer	O
Kimball	O
,	O
Peter	O
Mattis	O
,	O
and	O
Ben	O
Darnell	O
.	O
</s>
<s>
Kimball	O
and	O
Mattis	O
had	O
been	O
key	O
members	O
of	O
the	B-Application
Google	I-Application
File	O
System	O
team	O
,	O
while	O
Darnell	O
was	O
a	O
key	O
member	O
of	O
the	B-Application
Google	I-Application
Reader	O
team	O
.	O
</s>
<s>
While	O
at	O
Google	B-Application
,	O
all	O
three	O
had	O
used	O
Google-owned	O
DBMS	O
’s	O
Bigtable	B-Application
and	O
its	O
successor	O
,	O
Spanner	B-Operating_System
.	O
</s>
<s>
After	O
leaving	O
Google	B-Application
,	O
they	O
wanted	O
to	O
design	O
and	O
build	O
something	O
similar	O
.	O
</s>
<s>
Spencer	O
Kimball	O
wrote	O
the	O
first	O
iteration	O
of	O
the	O
design	O
in	O
January	O
2014	O
,	O
and	O
began	O
the	O
open-source	O
project	O
on	O
GitHub	B-Application
in	O
February	O
2014	O
,	O
allowing	O
outside	O
access	O
and	O
contributions	O
.	O
</s>
<s>
Development	O
on	O
GitHub	B-Application
attracted	O
substantial	O
contributions	O
,	O
which	O
earned	O
the	O
project	O
the	O
Open	O
Source	O
Rookie	O
of	O
the	O
Year	O
award	O
by	O
Black	O
Duck	O
Software	O
.	O
</s>
<s>
In	O
June	O
2019	O
,	O
Cockroach	B-Operating_System
Labs	I-Operating_System
announced	O
that	O
CockroachDB	B-Operating_System
would	O
change	O
its	O
license	O
from	O
the	O
free	B-Application
software	I-Application
license	O
Apache	B-Application
License	I-Application
2.0	I-Application
to	O
their	O
proprietary	B-Application
license	I-Application
,	O
known	O
as	O
the	O
Business	O
Source	O
License	O
(	O
BSL	O
)	O
,	O
which	O
forbids	O
“offer[ing]	O
a	O
commercial	O
version	O
of	O
CockroachDB	B-Operating_System
as	O
a	O
service	O
without	O
buying	O
a	O
license	O
,	O
”	O
while	O
remaining	O
free	B-Application
for	O
community	O
use	O
.	O
</s>
<s>
CockroachDB	B-Operating_System
stores	O
copies	O
of	O
data	O
in	O
multiple	O
locations	O
to	O
deliver	O
speedy	O
access	O
.	O
</s>
<s>
It	O
is	O
described	O
as	O
a	O
scalable	O
,	O
consistently-replicated	B-General_Concept
,	O
transactional	B-General_Concept
datastore	I-General_Concept
.	O
</s>
<s>
CockroachDB	B-Operating_System
is	O
designed	O
to	O
run	O
in	O
the	O
cloud	O
and	O
has	O
a	O
high	O
fault	B-General_Concept
tolerance	I-General_Concept
.	O
</s>
<s>
Even	O
if	O
multiple	O
servers	O
or	O
an	O
entire	O
datacenter	B-Operating_System
went	O
offline	O
,	O
CockroachDB	B-Operating_System
would	O
not	O
stop	O
working	O
.	O
</s>
