Fretlink tech blog

So you want to revoke macaroons

Macaroons are bearer tokens. As for every bearer token, the question of revocation is important: how can we stop a token from being accepted by services?

Build your own “data lake” for reporting purposes in a multi-services environment

Tech companies nowadays swear by data-driven decisions. It can be good for specific business KPIs, however, if taken too far it can lead to incorrect optimisations (too local), social pressure on your employees, incorrect business decisions, metrics with no meaning.

haskell

Yet another (unsafe) DB layer

"Should I use an ORM?" - the greatest thread in the history of forums, locked by a moderator after 12,239 pages of heated debate, @dril (à peu près)

configuration

Adding Fun to the Configuration Burden

Did you ever enjoy writing XML files by hand? No, OK, I thought so. Was it better with JSON? No. What about YAML where the indentation is so easy right? No, none of these are enjoyable. The reason for all these no is simple: formats are meant to be read or written by machines and not by humans.

haskell

The doomsday machine

Ah, the do-notation. Is it good, is it bad [https://mail.haskell.org/pipermail/haskell-cafe/2007-August/030178.html]; who knows? It's good for beginners, it's bad for beginners. It's considered

infrastructure

From a click-a-boo cloud architecture to Infrastructure as Code

Like many start-ups we started with a proof of concept which transformed into a production system. The team was a developer-driven one, with neither system administrators nor “devops” people.

haskell

Environment variables parsing for free (applicatives)

As cloud native™ citizens, we have been heavily inspired by the twelve factor app [https://12factor.net/]. One of its key points is application configuration through environment variables. As the

Team

Open door to our team

We are the tech team of Fretlink and we welcome you to this new space on the internet with great pleasure.

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