Change effective on 26 March 2013
queue and wait fields have been removed from router log messages. Also, the Heroku router no longer sets X-Heroku-Dynos-In-Use, X-Heroku-Queue-Depth and X-Heroku-Queue-Wait-Time HTTP headers for incoming requests.
See the HTTP Routing article for details.
Heroku Update
Starting November 28th, 2022, free Heroku Dynos, free Heroku Postgres, and free Heroku Data for Redis® will no longer be available. If you have apps using any of these resources, you must upgrade to paid plans by this date to ensure your apps continue to run and to retain your data.
Eligible students can apply for platform credits starting October 3rd, 2022 through our new Heroku for GitHub Students program.