The Importance of One Test One Assertion (OTOA) in Unit Testing

Tired of fragile tests breaking after every refactor? One Test One Assertion (OTOA) ensures each test checks a single behaviour.

Move: A Framework for Outcome-Driven Teams

How we built a React design system

Using design tokens together with the atomic design methodology and CSS custom properties to create a design system

Our RubyDay conference journey

Diving into RubyDay: behind the scenes of Treatwell’s preparation for the 2023 edition of the Italian Ruby conference.

PostgreSQL cluster migration made simple

From Kubernetes to Aurora. Is it so hard? Let’s see.

Beyond the names: Leveraging AI for gender inference and name parsing in a customer base

Can Artificial Intelligence improve customer data management? Explore how Treatwell is using NLP techniques to enhance data accuracy.

Automatically scale your Rails application with HPA

Scalability is something we need to face when the application grows over time, and the easier solution is to add more replicas. Or not?

VPN Tunnels: how we used them to migrate our platform to AWS

How can we move everything to AWS with no downtime and without any impact to the productivity?

Terabyte-scale PostgreSQL upgrade from 9.6 to 14

Time flies, and here at Treatwell we found ourselves in the highly feared condition of being forced to upgrade the PostgreSQL database.

Tech Trends to Shape Your Product Strategy in 2021

As the UK starts to emerge from its third lockdown, we look back at the tech trends that you need to shape your product strategy in 2021…