In dumps compared, 4 gems got more than 10 versions under an hour and 2 gems got 7 versions within a minute.

Jan_2019.sql

gemcutter_development=# select name, updated_at from rubygems order by updated_at desc limit 1;
    name     |         updated_at
-------------+----------------------------
 canvas_sync | 2019-01-07 21:10:22.016253
(1 row)

gemcutter_development=# select count(*) from (select date_trunc('hour',created_at) as created_at, count(*) as num, rubygem_id from versions  group by 1, 3 order by num
 desc) as s where s.num > 10;
 count
-------
  1010
(1 row)

gemcutter_development=# select count(*) from (select date_trunc('hour',created_at) as created_at, count(*) as num, rubygem_id from versions  group by 1, 3 order by num
 desc) as s where s.num > 20;
 count
-------
   281
(1 row)


### per min
gemcutter_development=# select count(*) from (select date_trunc('minute',created_at) as created_at, count(*) as num, rubygem_id from versions  group by 1, 3 order by n
um desc) as s where s.num > 20;
 count
-------
   221
(1 row)
gemcutter_development=# select count(*) from (select date_trunc('minute',created_at) as created_at, count(*) as num, rubygem_id from versions  group by 1, 3 order by num desc) as s where s.num > 6;
 count
-------
  1894
(1 row)

June_2018.sql

rubygems=# select name, updated_at from rubygems order by updated_at desc limit 1;
     name      |         updated_at
---------------+----------------------------
 beautiful_url | 2018-06-25 21:01:25.132539
(1 row)

rubygems=# select count(*) from (select date_trunc('hour',created_at) as created_at, count(*) as num, rubygem_id from versions  group by 1, 3 order by num desc) as s w
here s.num > 10;
 count
-------
  1006
(1 row)

rubygems=# select count(*) from (select date_trunc('hour',created_at) as created_at, count(*) as num, rubygem_id from versions  group by 1, 3 order by num desc) as s w
here s.num > 20;
 count
-------
   281
(1 row)


### per min
rubygems=# select count(*) from (select date_trunc('minute',created_at) as created_at, count(*) as num, rubygem_id from versions  group by 1, 3 order by num desc) as s
 where s.num > 20;
 count
-------
   221
(1 row)
rubygems=# select count(*) from (select date_trunc('minute',created_at) as created_at, count(*) as num, rubygem_id from versions  group by 1, 3 order by num desc) as s where s.num > 6;
 count
-------
  1892
(1 row)