Heroku Changelog

Python 2.7.5 and 3.3.2 Support

2013-05-17T00:00:00Z

Heroku now supports Python 2.7.5 and 3.3.2. You can specify a version with a runtime.txt file.

Ruby 1.9.3 updated to p429 and Ruby 2.0.0 updated to p195

2013-05-16T00:00:00Z

We've finished upgrading MRI 1.9.3 from p392 to p429 and MRI 2.0.0 from p0 to p195. These patchlevel updates include a security fix for CVE-2013-2065. Here's a link to the MRI 2.0.0-p195 announce and the MRI 1.9.3-p429 announce. You'll get the updated ruby runtime for your app upon next push.

Ruby 1.9.3 and Ruby 2.0.0 patchlevel updates

2013-05-15T00:00:00Z

Some new patchlevels for Ruby 1.9.3 and Ruby 2.0.0 have been released. We will be updating our rubies tomorrow morning.

Cedar system packages updated

2013-05-10T00:00:00Z

The Cedar stack has been updated to include the latest security fixes from Ubuntu 10.04 as well as 32-bit binary compatibility packages (ia32-libs). The stack upgrade is being rolled out gradually over a period of several days.

Heroku Postgres metrics format change

2013-05-07T00:00:00Z

Metrics log format on Production Tier Heroku Postgres plans changed to a standardized format. For information on the format, view this Dev Center article

Dataclips now cancels queries longer than 10 minutes by default

2013-05-07T00:00:00Z

In order to help prevent accidental, long-running queries from adversely impacting production databases, Dataclips now sets a 10 minute statement timeout.

The Limits secton of the Dataclips article has detailed information.

Postgres database metrics now appear on application logs for Production Tier databases

2013-05-03T00:00:00Z

Production Tier (Crane and up) databases will now display various database related metrics on their application log streams.

Slow query reporting to logs has been increased to 2 seconds for Postgres 9.2

2013-05-02T00:00:00Z

For all Postgres v9.2+ databases, the threshold for slow queries to be logged to Logplex is now 2 seconds. Previously, this threshold was 50ms.

Postgres v9.1 and below databases are not affected and will still classify queries taking longer than 50ms as slow.

New dyno network configuration

2013-05-01T00:00:00Z

All dynos now have separate network interfaces. This functionality was originally developed under the “containerized-network” Heroku Labs flag. Due to a Linux kernel bug, using Raindrops to measure Ruby Rack queue lengths is not currently possible.

We’d like to thank John Leach for working with us on this dyno networking improvement. Read more about dyno isolation and security.

PostGIS 2.0 in public beta for Heroku Postgres

2013-04-30T00:00:00Z

PostGIS 2.0, adding rich geospatial support for PostgreSQL, is now available in public beta for Heroku Postgres. PostGIS 2.0 support is available on all production tier databases that have been provisioned since 04/20/2013.

Heroku Scheduler classified as "best-effort" service

2013-04-29T00:00:00Z

Heroku Scheduler is being defined as a “best effort” service, meaning that execution is expected but not guaranteed. If scheduled jobs are a critical component of your production application, it is recommended to run a custom clock process instead for more reliability, control, and visibility.

Heroku Scheduler is an add-on for running jobs on your app at scheduled time intervals.

New syslog severity for system and API logs

2013-04-26T00:00:00Z

System and API logs being sent to syslog drains will have a new severity value starting on Tuesday, April 30th.

Previously those log lines had a severity of emergency(0). After the change, they will be notice(5). This will not affect the usage of heroku logs or its current format.

Containerized networking is default for new apps and is being added to existing apps

2013-04-26T00:00:00Z

The Containerized networking labs feature is added by default for new apps. In addition, containerized networking is currently being rolled out to existing apps.

This feature is designed to be transparent to applications.

See the Containerized networking article for details.

Production check now available in Dashboard

2013-04-26T00:00:00Z

Heroku Dashboard now lets you check several common configuration options you should consider when launching a production app.

See the Production Check article and blog post for details.

Europe region available in public beta

2013-04-24T00:00:00Z

Heroku now supports running apps in Europe via the regions feature:

$ heroku create --region eu

Please make sure your toolbelt is updated to the latest version.

$ heroku update
Updating from 2.38.2... done
$ heroku version
heroku-toolbelt/2.39.0 (x86_64-darwin10.8.0) ruby/1.9.3

For more information, see our Dev Center documentation on regions and migrating to the Europe region.

Web privacy controls available in Heroku Dashboard

2013-04-22T00:00:00Z

Heroku Dashboard now allows you to opt out of third-party analytics services which are able to access personally identifiable information.

Expanded HTTP method support

2013-04-22T00:00:00Z

Heroku now has expanded HTTP method support, including the PATCH method. Heroku’s routing stack now allows any HTTP method up to 127 characters.

Please see the Supported HTTP Methods documentation or the Heroku blog post for full details.

Rubygems Upgrade for Ruby 2.0.0

2013-04-19T00:00:00Z

Rubygems on Ruby 2.0.0 has been upgraded from Rubygems 2.0.0 to Rubygems 2.0.3 to fix a bug with native extension compilation like bson_ext.

Heroku Postgres - Version 9.2 is now Default

2013-04-18T00:00:00Z

Heroku Postgres – Version 9.2 is now the default when provisioning a database. You can read more about the features available in 9.2 on the Heroku Postgres blog or more on our version policy within devcenter.

Updated Logplex error code documentation

2013-04-17T00:00:00Z

Heroku Error Codes now contains updated documentation for Logplex L10 output buffer overflow errors. The new documentation covers some common causes of L10s and some tips on investigating their causes.

Scala Doc Generation Skipped

2013-04-17T00:00:00Z

Scala SBT app builds on Heroku now skip extraneous Scala and Java doc generation to speed up build times.

Disable Java RMI Remote Classloading for CVE-2013-1537

2013-04-17T00:00:00Z

A security bug in OpenJDK allows remote code execution via RMI. JVM-based apps (e.g. Java, Scala, Clojure) will receive an update to address the security bug the next time you push to Heroku. The -Djava.rmi.server.useCodebaseOnly=true system property will automatically be set on the app. If you wish to override this setting, you can do so in JAVA_OPTS or in your application’s Procfile.

Dashboard now allows creating apps

2013-04-10T00:00:00Z

Heroku Dashboard now allows users to create new apps in the web interface.

Increased log timestamp precision

2013-04-09T00:00:00Z

Timestamps in all logs now include microsecond (6-decimal) precision. Previously logs were truncated to whole seconds. Here is an example of the new format: 2013-04-09T21:34:14.801204+00:00 heroku[router]: ...

Python v3.3.1 Support

2013-04-09T00:00:00Z

Heroku now supports Python v3.3.1. You can specify a version with a runtime.txt file.