Silverfin Engineering

Provisioning compute instances with Chef from Terraform

The problemWhen Terraform 0.13.4 was released, various provisioners, including the Chef provisioner, were deprecated with no replacement. They were later removed in Terraform 0.15. You’d get a warning about this such as this one: Warning: The "chef" provisioner is deprecated on example.tf line 52, in

PostgreSQL zero-downtime migration of a primary key from int to bigint (with Ruby on Rails specific notes)

“90% what?” “I said this table is at 90%.” “Of what?” “Of int values for its primary key.” “That .. doesn’t sound good.” “No, if it gets to 100% we’re down.” “That’s not good.” “No, captain obvious.” “So what do we do?” “We have to migrate it to

Get to know Youp, our Talent Acquisition Specialist

When you apply for an engineering job at Silverfin, the first person to contact you will be Youp, our Talent Acquisition Specialist. He’ll assist you throughout the whole recruiting process: smoothly organising the interviews and meetings and making sure you’re well informed of the process and what’ll

Always set explicit timeouts

Our next ticket is to implement another integration with 3rd party HTTP API. As it's in life, the documentation is imprecise, provided examples are outdated, and nobody is responding to our e-mails. It's not the first one though, so after some time we do have it ready. Either it is

Mob Debugging

Here at Silverfin, we encourage pair programming for knowledge sharing, instant code reviews, and overall better code quality. There have been occasions of mob programming as well when we got together on-site or during a retreat. Mob programming is like pair programming, but with a whole team that works on

remote work

How to work remotely when you don’t want to

Sometimes circumstances force us to work remotely. Here are a few tips and tricks that have been battle tested by our teams, that could hopefully help you in the remote adventure.