Summary On January 26th, 2018, Medium had a rolling outage from 4:51PM until 5:32PM. Impact A majority of requests to medium.com failed (including visits from a web browser, interactions from our native apps, and API requests). Timeline 4:51PM: Server errors began 5:31PM: A bad cache instance was identified and restarted 5:32PM: The last…

Part five of a five part guide to assessing professional growth at Medium — As we continue to learn, we are now on our third iteration of this process. Please see here for the latest update. We recently undertook a project to define professional development for members of Medium’s engineering team. As part of that, I wrote this document to answer some questions that…

Part four of a five part guide to assessing professional growth at Medium — As we continue to learn, we are now on our third iteration of this process. Please see here for the latest update. We recently undertook a project to define professional development for members of Medium’s engineering team. As part of that, I wrote this document to describe the appeals process…

Part three of a five part guide to assessing professional growth at Medium — As we continue to learn, we are now on our third iteration of this process. Please see here for the latest update. We recently undertook a project to define professional development for members of Medium’s engineering team. As part of that, I wrote this document to explain how milestones are…

Part two of a five part guide to assessing professional growth at Medium — As we continue to learn, we are now on our third iteration of this process. Please see here for the latest update. We recently undertook a project to define professional development for members of Medium’s engineering team. As part of that, I wrote this document to describe the rationale for…

Part one of a five part guide to assessing professional growth at Medium — As we continue to learn, we are now on our third iteration of this process. Please see here for the latest update. We recently undertook a project to define professional development for members of Medium’s engineering team. As part of that, I wrote this document to describe the main features…

Helping engineers build a career at Medium — As we continue to learn, we are now on our third iteration of this process. Please see here for the latest update. Until recently, the process around progression and promotion as a Medium engineer was relatively opaque. We did have the concept of levels, and senior leadership were reasonably well…

Crash on app launch for users running iOS 11 — On September 19, 2017, version 3.3 of the Medium iOS app was released to the App Store. Apple released the official version of iOS 11 earlier that same day. Through a combination of factors, the app started crashing on launch for users running iOS 11. Timeline September 19, 3:22pm: Version 3.3…

Summary On July 11th, 2017, Medium.com was not serving requests from 4:10 pm to 4:14 pm due to a deployment issue caused by a miscommunication. Impact No one could access https://medium.com for 4mn. Root cause At Medium, all services are deployed following a continuous integration and continuous deployment model. What this means is that…