Backend & Data

"Server side" names a location, not a skill.

Node.JS is a runtime that executes JavaScript outside the browser.

Python is a general-purpose language built around readability: indentation defines blocks, types are optional and checked at runtime, and the standard…

Java large

Java is a statically typed, compiled language that runs on a virtual machine.

Go medium

Go is a compiled language designed around three properties: it compiles quickly to a single static binary, it has concurrency built into the language…

Restful API medium

A RESTful API exposes data as resources with stable addresses, and lets clients act on them using the standard meanings of HTTP methods and status codes.

SQL & Relational Databases large

A relational database stores data in tables of rows and columns, relates tables to one another through shared key values, and answers questions with SQL.

Express.js small

Express.js is a small web framework for Node.

API Design (OpenAPI / Swagger) medium

A description format for HTTP APIs: a machine-readable document listing the paths, the methods on each, the parameters, the request and response bodies…

Authentication & Authorization (OAuth2 / JWT) medium

Authentication is proving who the caller is; authorization is deciding what that caller may do.

WebSockets small

WebSockets upgrade an HTTP connection into a persistent, two-way message channel.

Microservices medium

A microservice architecture splits a system into services that are independently deployable, each owning its own data and communicating over the network.

NoSQL medium

NoSQL is a collective name for stores that gave up one or more of the relational model's properties in exchange for something else: documents instead of…

Database Design medium

Database design is choosing the tables, keys, relationships and indexes that make an application's data correct and its queries fast.

Object-Relational Mapping small

An object-relational mapper translates between the objects an application works with and the rows a relational database stores.

Caching (Redis) medium

A cache keeps a copy of data that is expensive to produce in a place that is fast to read.

Message Queues (Kafka / RabbitMQ) medium

A message broker sits between a producer and a consumer so that the producer does not have to wait for the consumer, and does not have to know who it is.

MongoDB medium

MongoDB is a document database: it stores JSON-like documents in collections, indexes fields inside them, and answers queries against those indexes.

Prisma ORM small

Prisma is an object-relational mapper for Node and TypeScript in which the schema is the source of truth.