Prefetch gem updates at booting a server

app/workers/gem_update_check.rb

@@ -0,0 +1,10 @@
+class GemUpdateCheck
+  include SuckerPunch::Job
+  workers 16
+
+  def perform(gem_name)
+    SuckerPunch.logger.info "check #{gem_name} latest version"
+    pl = Plugin.new(gem_name: gem_name)
+    pl.latest_version # NOTE: latest_version will cache rubygems.org response
+  end
+end

config/initializers/prefetch_gem_updates.rb

@@ -0,0 +1,3 @@
+Plugin.installed.each do |pl|
+  GemUpdateCheck.new.async.perform(pl.gem_name)
+end