- I'd like to be able to see how long bundler takes for basic
  operations such as downloading a gem from Rubygems.org and
  installing a gem.

  It will now be possible with this commit by running
  `DEBUG=true bundle install` and have output that looks like:

  Fetching rack-test 2.2.0
  Downloaded rack-test in: 50.523s
  Installing rack-test 2.2.0
  Installed rack-test in: : 0.003s

https://github.com/ruby/rubygems/commit/46386d43e1

- ### Problem

  This limit is used when Bundler fallback to getting a dependency
  list from a server `/dependencies?gem=` endpoint. Bundler uses
  this API endpoint fallback when a server doesn't expose the compact
  index API.
  This is not used for Rubygems.org, only private servers.

  This limit is then divided by the number of dependency to get
  and the result is the number of request we'll be doing.
  The bottleneck on the client is the network roundtrip. On the
  server, getting the info of 50 or 100 gems is a bit more expensive
  but this operation is heavily cached.

  This is an example of Rubygems.org implementation at the time the
  dependencies API wasn't deprecated
  https://github.com/rubygems/rubygems.org/blob/5a3a3ec02acc3a4e3aba077953a393ad20a06842/app/models/gem_dependent.rb#L15

  ### Context

  This limit used to be 100 a while ago but got changed
  to 50 in https://github.com/ruby/rubygems/commit/e745f8dc901dd419e7dc8aede3e8d49569fc7b1e
  I don't know why.

  ### Solution

  50 gems to query seems arbitrary low. By doubling this number, we
  make twice as less API requests which ultimately can shove up to two
  seconds on application relying on a large number of gems.

https://github.com/ruby/rubygems/commit/831894043c

https://github.com/rubygems/rubygems/commit/bfe15a4712

Co-authored-by: David Rodríguez <2887858+deivid-rodriguez@users.noreply.github.com>

https://github.com/rubygems/rubygems/commit/8f9d6c54a1

The previous wording was too specific, there may be situations when the
gem has actually never installed (so never deleted either).

https://github.com/rubygems/rubygems/commit/e4a0d71fbe

https://github.com/rubygems/rubygems/commit/3df86cd9c6

https://github.com/rubygems/rubygems/commit/c80998a22a

https://github.com/rubygems/rubygems/commit/74e8eff779

https://github.com/rubygems/rubygems/commit/b9a2d4d539