Joyce Lin

The Server Foundation team at Postman shares the origin story of the Bifrost websocket gateway

In the Marvel Cinematic Universe, Bifrost is the name of the rainbow bridge that allows instantaneous travel between the realms of gods and humanity. Similarly, and equally magically, our Bifrost websocket gateway lets Postman clients instantaneously connect to Postman services.

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Photo by Toni Reed on Unsplash

As I’ve previously shared in How Postman Engineering Does Microservices, all software architectures are a continuous work in process. Operating in the real world means occasionally re-evaluating old ways of thinking to adjust to new circumstances. That is the natural evolution of software design.

Here is the story of how Postman engineers developed the Bifrost websocket gateway by chipping away…


Simplify deployment for multiplayer Minecraft on a self-hosted Raspberry Pi server using Kubernetes

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Photo by Nina PhotoLab on Unsplash

Just like Minecraft is more fun when a friend shows you how to make torches and avoid creepers, Kubernetes is also less scary with someone to guide the way.

The Minecraft wiki has lots of pointers for setting up your own server. But it doesn’t say how to do it with Kubernetes. I recently learned how easy it is to deploy an app to a local Raspberry Pi with Kubernetes.

Let’s try it again — this time to run a free Minecraft server on Kubernetes.


See how you measure up to these nine better practices for Postman documentation

I’ve previously talked about the traits of a good collection. While not all collections grow up to be documentation, collections are the foundational building blocks for all Postman documentation viewable on the web. Here, I’m going to talk about the traits of good documentation.

Postman documentation has become widely adopted across the API community because it enables better collaboration and API adoption. Let’s learn from the thousands of publishers who document their APIs in Postman — like Microsoft, Twitter, and Dropbox — and find out what makes their documentation successful.

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What is good documentation?

Effective documentation teaches someone how to use your API. Since…


Custom reports for more control over your own data

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Photo by Bill Mackie on Unsplash

Some mysteries in life can only be answered by data. For example, if you have questions about your Twilio usage, there are a few ways to dig into the data. There are prebuilt summaries and graphs of your activity in the Twilio console, and if you’re handy with a spreadsheet, you can export the data. There are also third-party providers with out-of-the-box analytics and visualizations.

In the case that nothing answers your particular question, this tutorial shows you how to make custom reports using the Twilio REST API to access your data and drive your own insights.

Tutorial requirements

  • Python version 3


Set up a CronJob to check for satellites

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Photo by Phil Botha on Unsplash

SpaceX is launching thousands of Starlink satellites to assemble a giant interconnected constellation in space. If you look up at just the right time, you might be lucky enough to spot some. But how can you know ahead of time when a satellite is going to pass overhead?

You don’t have to count on luck to see these tiny silver ants parading across the night sky. This tutorial shows you how to set up a scheduled job to check if a satellite approaches and send an SMS alert out to notify you.

Tutorial Requirements

  • Python version 3
  • A personal phone number to…


A microservices update about domain-driven squads, CDC testing, and happily ever after

A couple years ago, Postman CTO and co-founder Ankit Sobti shared Postman’s struggle to escape from a microservices dependency hell. If you want to learn more about how and why Postman Engineering ventured into microservices, check out Ankit’s story.

This is an update — here’s how Postman Engineering does microservices today.

Who is Postman Engineering?

Postman Engineering has 100+ engineers working across eight locations around the world. The company just announced a Series C round of funding, so things are bound to evolve as with any growing startup.

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the sheer beauty of Postman Engineering

Let’s dive into how these teams are organized. …


Three options for public access to a Philips Hue light — go ahead, turn on the lights in my kitchen

In a recent Livestream with my teammate Arlemi, we unboxed some lights and messed around with the Philips Hue Lights API. We figured out how to turn on the light and change the colors using an API.

Then Arlemi queried a weather API — he wanted to update the light based on the weather forecast.

the original events inspiring this project

But the light was with me in San Francisco. And Arlemi was in London. So I was the only one who could update the device during the Livestream.

So the challenge began: how could I let Arlemi, and the…


Slow your roll by building a simple rate limiter to improve the availability of your API-based services

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Photo by Ludovic Charlet on Unsplash

Rate limiting can protect and improve the availability of your API-based services. If you’re talking to an API and receive the HTTP 429 Too Many Requests response status code, you’ve been rate limited. That means you’ve exceeded the number of requests allowed within a given period of time. Slow your roll and wait a bit, before trying again.

Why rate limit?

When you’re thinking about limiting your own API-based service, you need to balance tradeoffs between user experience, security, and performance.


Don’t gamble accessing self-hosted services on a Raspberry Pi when you’re away from home and your IP changes

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Photo by NASA on Unsplash

Most internet service providers (ISPs) give residential customers a dynamic IP address. They pull from a pool of IP addresses and allocate one to a home. Since the IP address might change in a few months or even in a few hours, it can be hard to consistently access your personal computer when you’re away from home.

Setting up a dynamic DNS (DDNS) service gives you reliable access to self-hosted services, like a personal website, a Minecraft server, or just your home computer. …


Transition from bash to zsh with custom settings, conditional emojis, and git prompt

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Photo by Serena Repice Lentini on Unsplash

For my last Mac, I had a friendly hamster face emoji in my terminal bash prompt. After I recently upgraded to a new Mac, I discovered Apple has replaced bash with zsh as the default shell, beginning with macOS Catalina.

Starting with macOS Catalina, your Mac uses zsh as the default login shell and interactive shell.

You can still switch back to bash, for now, but the trend is moving to zsh as the command-line interpreter for the login shell and interactive shell.

Here’s how you can add an Octopus emoji and other custom items to your zsh prompt to…

Joyce Lin

coding and cats in San Francisco

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