android/iOS
Frontend
Infrastructure
Data
Backend
100

A modern JVM based programming language now officially supported for Android development.

What is Kotlin?

100

This file, commonly included with NPM packages, contains metadata about the package, such as its name, version, and dependencies.

What is package.json?

100

An open-source, in-memory data structure store used as a database, cache, and message broker.

What is redis?
100

Over 4m.

How many emails do we send daily?

100

A package that contains a Ruby application or library, which can be distributed and shared across projects.

What is a ruby gem?

200

This Android version was named after a popular cookie.

What is Oreo?

200

This hook in React allows you to manage state and other side effects in functional components.

What is useEffect?

200

It distributes the requests equally between the servers from that group.

What does a load balancer do?

200

Sending a private message.

What's the most common activity users do on our platform?

200

A layer in Rails responsible for interacting with the database, allowing for easy data retrieval, manipulation, and persistence using Ruby objects.

What is ActiveRecord?

300

A tool that allows iOS developers to run and debug their apps directly on real devices or simulators, manage certificates, and automate builds as part of Apple’s development ecosystem.

What is Xcode's Continuous Integration (CI) system?

300

This feature of Next.js allows for pre-rendering pages at build time, making your site faster and more SEO-friendly.

What is Static Site Generation (SSG)?

300

A network scanning tool used to discover hosts and services on a computer network by sending packets and analyzing responses.

What is nmap?

300

The Akazienkiez on 2015-08-19.

What was the first hood that we opened?

300

They were the first non-private entities on nebenan.

What are organization profiles?

400

The build automation and dependency management tool that is commonly used for Android projects.

What is Gradle?

400

This approach, often abbreviated as BEM, is a methodology that helps you write more maintainable and understandable CSS.

What is Block Element Modifier?

400

It's a 3 steps process: 1. Sender starts the connection; 2. Receiver accnoleges the connection; 3. Sender confirms the accnolegement.

How is a TCP/IP connection is established?

400

A cloud-based data warehousing platform designed for processing and analyzing large amounts of data with high performance and scalability.

What is snowflake?

400

/passw|secret|token|_key|crypt|salt|certificate|otp|ssn|phone/

What is our filter for parameters that should not be logged?

500

A person called Katrin Apel on April 6th 2016

Who commited the initial iOS application commit?

500

This node repository was deployed a single time this year.

How often was the organizations frontend deployed in 2024?

500

A container orchestration platform that automates the deployment, scaling, and management of containerized applications, originally developed by Google.

What is Kubernetes?

500

Every run stores about 6.1 TB.

How much disk space does a production DB backup require?

500

A special hidden class in Ruby that holds methods specific to a single object, allowing for object-level method definitions.

What is the concept of an eigenklass in Ruby?