Obfuscate filenames better, double rate limits

app/controllers/concerns/obfuscate_filename.rb

@@ -13,6 +13,10 @@ module ObfuscateFilename
     file = params.dig(*path)
     return if file.nil?
 
-    file.original_filename = 'media' + File.extname(file.original_filename)
+    file.original_filename = secure_token + File.extname(file.original_filename)
+  end
+
+  def secure_token(length = 16)
+    SecureRandom.hex(length / 2)
   end
 end

config/initializers/rack-attack.rb

 class Rack::Attack
   # Rate limits for the API
-  throttle('api', limit: 150, period: 5.minutes) do |req|
+  throttle('api', limit: 300, period: 5.minutes) do |req|
     req.ip if req.path.match(/\A\/api\/v/)
   end
 
@@ -11,7 +11,7 @@ class Rack::Attack
     headers = {
       'X-RateLimit-Limit'     => match_data[:limit].to_s,
       'X-RateLimit-Remaining' => '0',
-      'X-RateLimit-Reset'     => (now + (match_data[:period] - now.to_i % match_data[:period])).iso8601(6)
+      'X-RateLimit-Reset'     => (now + (match_data[:period] - now.to_i % match_data[:period])).iso8601(6),
     }
 
     [429, headers, [{ error: 'Throttled' }.to_json]]

docs/Using-the-API/Push-notifications.md

 Push notifications
 ==================
 
-**Note: This push notification design turned out to not be fully operational on the side of Firebase. A different approach is in consideration**
+See <https://github.com/Gargron/tusky-api> for an example of how to create push notifications for a mobile app. It involves using the Mastodon streaming API on behalf of the app's users, as a sort of proxy.