A common challenge when building microservices is providing a unified interface to the consumers of your system. The fact that your services are split into small composable apps shouldn’t be visible to users or result in substantial development effort.

To solve this problem, Netflix (a major adopter of microservices) created and open-sourced its Zuul proxy server. Zuul is an edge service that proxies requests to multiple backing services. It provides a unified “front door” to your system, which allows a browser, mobile app, or other user interface to consume services from multiple hosts without managing cross-origin resource sharing (CORS) and authentication for each one. You can...

Last week MailChimp announced that they are shutting down the Mandrill Heroku Add-on, giving users until April 27th to migrate to another solution. Many of our customers have sought guidance on how and where to migrate, so we have asked our email providers to create guides for migrating from the Mandrill add-on to their respective services.

Mailgun: Migrating from the Heroku Mandrill Add-on to the Mailgun Add-on

Postmark: Migrating your Mandrill Heroku Add-on to Postmark

SendGrid: Replacing the Mandrill Heroku Add-on with the SendGrid Add-on

SparkPost: Migrating from Mandrill to SparkPost on Heroku

I spend most of my time at Heroku working on our support tools and services; help.heroku.com is one such example. Heroku's help application depends on the Platform API to, amongst other things, authenticate users, authorize or deny access, and fetch user data.

So, what happens to tools and services like help.heroku.com during a platform incident? They must remain available to both agents and customers—regardless of the status of the Platform API. There is simply no substitute for communication during an outage.

To ensure this is the case, we use api-maintenance-sim, an app we recently open-sourced, to regularly simulate Platform API incidents.


Simulating downtime

During a Platform...

Today we are introducing Add-on Controls for Heroku Enterprise customers. This new feature enables team leads to whitelist specific add-ons for approved use within their organization, choosing from our marketplace of over 150 add-on services. The ability to standardize the add-on technologies being used across all the apps and developers in their organization is something many customers have asked for, especially those with fast-growing teams.

Standardizing Add-ons Using the Whitelist

To get started with Add-on Controls, the first step is for the team lead, or anyone who has admin permissions, to build the Add-ons Whitelist. There is a new section on the organization’s settings page,...

A big update to the beloved Python web framework known as Django was released recently: Django 1.9. This release contains a long list of improvements for everything from the graphical styling of the admin to the ability to run your test suite in parallel.

Our favorite improvements to the framework were, of course, all about our favorite database: Postgres. Here are some of the highlights from the official release notes (highly recommended reading).

Renamed PostgreSQL Back-end

Django's fantastic built-in Postgres database back-end received a nice name change. Previously known as django.db.backends.postgresql_psycopg2, the back-end will now be officially available as the much easier...

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