After developing for some years REST API-s with Express and Sequelize ORM I felt that it was the time to try something new. During my research for other NodeJS Web Frameworks I came across Fastify. Among other features, selling point that caught me off was their official benchmark which shows

When getting into NodeJS, the first thing that might be a surprise is its single threaded model. Nowadays most OS support multi-core CPU architecture and threading which enables developers to perform multiple operations at the same time. But does NodeJS take advantage of multi-threading or it is really single threaded?