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Heroku Blog

Making Time to Save You Time: How We Sped Up Time-Related Syscalls on Dynos

I work on Heroku’s Runtime Infrastructure team, which focuses on most of the underlying compute and containerization here at Heroku. Over the years, we’ve tuned our infrastructure in a number of ways to improve performance of customer dynos and harden security.

We recently received a support ticket from a customer inquiring about poor performance in two system calls (more commonly referred to as syscalls) their application was making frequently: clock_gettime(3) and gettimeofday(2).

In this …

Container and Runtime Performance Improvements

Today we’re sharing three performance enhancements that we have recently rolled out to apps running in Private Spaces:

  • Dynos upgraded to the latest generation infrastructure for 10-15% perf improvement
  • More consistent performance for Small Private and Shield Space dynos
  • Optimized clock source selection

Heroku is a fully managed platform-as-a-service (PaaS) and we work tirelessly to continuously improve and enhance the experience of running apps on our platform. Unlike lower-level infrastructure-as-a-service systems, improvements are applied automatically …

Streaming Data Connectors Beta: Capture Postgres Changes in Apache Kafka on Heroku

Today we are announcing a beta release of our new streaming data connector between Heroku Postgres and Apache Kafka on Heroku. Heroku runs millions of Postgres services and tens of thousands of Apache Kafka services, and we increasingly see developers choosing to start with Apache Kafka as the foundation of their data architecture. But for those who are Postgres-first, it is challenging to adopt without a full app rewrite. Developers want a seamless integration …

How We Added Client Rate Throttling to the Platform API Gem

When API requests are made one-after-the-other they’ll quickly hit rate limits and when that happens:

If you provide an API client that doesn’t include rate limiting, you don’t really have an API client. You’ve got an exception generator with a remote timer.

— Richard Schneeman Stay Inside (@schneems) June 12, 2019

That tweet spawned a discussion that generated a quest to add rate throttling logic to the platform-api gem that Heroku maintains for talking to …

Black Lives Matter: Our Thoughts, Actions, and Resources

It is never easy to know how to react, communicate, or at times, even feel, during something as heartbreaking and real as the struggles that our fellow humans face through no fault of their own. As Herokai, we stand in solidarity with the Black Lives Matter movement and want to share some of our thoughts on the struggle, as well as some actions and resources that we find helpful.

We will be keeping this post …

Building a GraphQL API in JavaScript

Over the last few years, GraphQL has emerged as a very popular API specification that focuses on making data fetching easier for clients, whether the clients are a front-end or a third-party.

In a traditional REST-based API approach, the client makes a request, and the server dictates the response:

$ curl https://api.heroku.space/users/1 { "id": 1, "name": "Luke", "email": "luke@heroku.space", "addresses": [ { "street": "1234 Rodeo Drive", "city": "Los Angeles", "country": "USA" } ] }

But, …

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