Date/Time: 2008-11
activerecord: 0
couchdb: 0
datamapper: 0
hadoop: 0
memcache: 0
memcached: 0
memcachedb: 0
mongo: 0
mysql: 1
orm: 0
postgres: 0
redis: 0
riak: 0
sequel: 0
simpledb: 0
sql alchemy: 0
sql server: 0

Date/Time: 2009-08
activerecord: 0
couchdb: 0
datamapper: 0
hadoop: 2
memcache: 1
memcached: 0
memcachedb: 0
mongo: 0
mysql: 8
orm: 0
postgres: 0
redis: 0
riak: 0
sequel: 0
simpledb: 0
sql alchemy: 0
sql server: 1

Date/Time: 2009-11
activerecord: 0
couchdb: 0
datamapper: 0
hadoop: 7
memcache: 0
memcached: 1
memcachedb: 0
mongo: 1
mysql: 2
orm: 0
postgres: 1
redis: 0
riak: 0
sequel: 0
simpledb: 0
sql alchemy: 0
sql server: 1

Date/Time: 2010-04
activerecord: 0
couchdb: 2
datamapper: 0
hadoop: 4
memcache: 0
memcached: 2
memcachedb: 0
mongo: 5
mysql: 5
orm: 0
postgres: 1
redis: 4
riak: 0
sequel: 0
simpledb: 0
sql alchemy: 0
sql server: 0

Date/Time: 2010-05
activerecord: 0
couchdb: 1
datamapper: 0
hadoop: 2
memcache: 0
memcached: 5
memcachedb: 0
mongo: 2
mysql: 6
orm: 0
postgres: 0
redis: 2
riak: 1
sequel: 0
simpledb: 0
sql alchemy: 0
sql server: 0

Date/Time: 2010-06
activerecord: 0
couchdb: 0
datamapper: 0
hadoop: 3
memcache: 1
memcached: 0
memcachedb: 0
mongo: 3
mysql: 3
orm: 0
postgres: 2
redis: 1
riak: 0
sequel: 0
simpledb: 0
sql alchemy: 0
sql server: 2

Date/Time: 2010-07
activerecord: 0
couchdb: 0
datamapper: 0
hadoop: 0
memcache: 0
memcached: 0
memcachedb: 0
mongo: 0
mysql: 0
orm: 0
postgres: 0
redis: 0
riak: 0
sequel: 0
simpledb: 0
sql alchemy: 0
sql server: 0

Date/Time: 2010-09
activerecord: 0
couchdb: 1
datamapper: 0
hadoop: 4
memcache: 0
memcached: 2
memcachedb: 0
mongo: 10
mysql: 10
orm: 0
postgres: 2
redis: 1
riak: 0
sequel: 0
simpledb: 0
sql alchemy: 0
sql server: 3

Date/Time: 2010-10
activerecord: 0
couchdb: 0
datamapper: 0
hadoop: 5
memcache: 1
memcached: 1
memcachedb: 0
mongo: 3
mysql: 9
orm: 0
postgres: 1
redis: 2
riak: 0
sequel: 0
simpledb: 0
sql alchemy: 0
sql server: 0

Date/Time: 2010-11
activerecord: 0
couchdb: 0
datamapper: 0
hadoop: 2
memcache: 0
memcached: 0
memcachedb: 0
mongo: 2
mysql: 3
orm: 0
postgres: 3
redis: 0
riak: 0
sequel: 0
simpledb: 0
sql alchemy: 0
sql server: 1

Date/Time: 2010-12
activerecord: 0
couchdb: 0
datamapper: 0
hadoop: 7
memcache: 1
memcached: 1
memcachedb: 0
mongo: 8
mysql: 4
orm: 2
postgres: 2
redis: 3
riak: 1
sequel: 0
simpledb: 0
sql alchemy: 0
sql server: 0

Date/Time: 2011-01
activerecord: 0
couchdb: 0
datamapper: 0
hadoop: 1
memcache: 0
memcached: 0
memcachedb: 0
mongo: 1
mysql: 6
orm: 0
postgres: 0
redis: 4
riak: 0
sequel: 0
simpledb: 0
sql alchemy: 0
sql server: 1

Date/Time: 2011-02
activerecord: 0
couchdb: 0
datamapper: 0
hadoop: 8
memcache: 1
memcached: 0
memcachedb: 0
mongo: 3
mysql: 8
orm: 0
postgres: 3
redis: 0
riak: 0
sequel: 0
simpledb: 0
sql alchemy: 0
sql server: 3

Date/Time: 2011-03
activerecord: 0
couchdb: 0
datamapper: 0
hadoop: 0
memcache: 0
memcached: 1
memcachedb: 0
mongo: 1
mysql: 2
orm: 0
postgres: 1
redis: 1
riak: 0
sequel: 0
simpledb: 0
sql alchemy: 0
sql server: 0

Date/Time: 2011-04
activerecord: 0
couchdb: 1
datamapper: 0
hadoop: 7
memcache: 0
memcached: 2
memcachedb: 0
mongo: 17
mysql: 23
orm: 1
postgres: 6
redis: 9
riak: 0
sequel: 0
simpledb: 0
sql alchemy: 0
sql server: 3

Date/Time: 2011-05
activerecord: 0
couchdb: 0
datamapper: 0
hadoop: 5
memcache: 1
memcached: 2
memcachedb: 0
mongo: 15
mysql: 13
orm: 0
postgres: 4
redis: 5
riak: 0
sequel: 0
simpledb: 0
sql alchemy: 0
sql server: 3

Date/Time: 2011-06
activerecord: 0
couchdb: 2
datamapper: 0
hadoop: 5
memcache: 0
memcached: 3
memcachedb: 0
mongo: 13
mysql: 28
orm: 0
postgres: 7
redis: 9
riak: 1
sequel: 0
simpledb: 2
sql alchemy: 0
sql server: 2

Date/Time: 2011-07
activerecord: 0
couchdb: 4
datamapper: 0
hadoop: 12
memcache: 1
memcached: 4
memcachedb: 0
mongo: 14
mysql: 17
orm: 2
postgres: 6
redis: 8
riak: 3
sequel: 0
simpledb: 0
sql alchemy: 0
sql server: 0