When building systems for new products, there’s a delicate balance between writing code that works…
At Clever, we lock down code access to customer data using AWS IAM roles with session policies.
In Clever’s microservice AWS architecture, each service has a unique IAM role with access to the AWS…
Everyone in the US is now back in school, and we’ve been feeling the rush of excitement here at Clever over the last few weeks. On a typical day at Clever this school year, we regularly hit more than 1,000 logins per second!
Over the last few months, we’ve been readying Clever SSO for our biggest year ever. We want students across the country logging in quickly and reliably to all of their learning applications. A couple of months ago, we described our initial stress testing…
Clever Goals is a new product that tracks students’ educational software usage. It creates progress data, a new type of data for Clever. This sensitive data needs to be protected from unauthorized access, and users should feel in control over how it’s used. How does the…
Two months ago, we experienced the worst outage in the history of Clever SSO. We wrote up a postmortem soon afterwards. We mentioned at the time that this postmortem was the beginning of our process to reevaluate everything we do to make sure we can be worthy of…
This story begins someplace familiar to many startups: our monolithic API had become unwieldy, and we wanted to transition towards a microservice architecture. And, like other young, scrappy startups, we couldn’t afford to freeze development while we re-architected the entire…
On Tuesday, Wednesday, and Thursday, March 6th-8th, 2018, Clever logins failed for all customers: 1h…
Over the past month, Clever worked with CERT to address a vulnerability in our open-source SAML2 library.
Clever maintains an open source library implementing the SAML protocol in Node.js known as saml2-js. We use this library internally in our SAML…
At Clever, one of our tenets is “Always a Student”, and in that spirit of learning we wanted to share the changes we made to fix memory allocation issues in AWS Elastic Container Service related to swappiness.
tl;dr: Try out microplane! It’s a CLI tool to make changes across many repos.
At Clever, we chose early on to deliberately define the key principles we wanted our culture…
