Yandex Go releases userver 3.0 — a new version of its open-source framework for building high-load applications

Yandex Go has announced the release of userver 3.0, the latest iteration of its open source C++ framework designed for building high-load applications. Published on GitHub, userver 3.0 includes more than 2,500 improvements based on user feedback and requests. Available to the entire global developer community, the framework helps reduce application memory consumption and accelerate development.

One of the key updates in this release is Chaotic, a code generation tool that automates the writing of repetitive boilerplate code. Chaotic can save hours of development time per data schema, while also reducing the number of errors and, consequently, improving overall code reliability.

Launching alongside userver 3.0 is userver easy — a library designed for rapid prototyping with extended scalability support — also now available to the broader C++ community. The library allows developers to quickly assemble new microservices capable of handling high loads, with built-in fault tolerance and diagnostics. The release also includes a suite of optimizations aimed at reducing RAM and CPU consumption.

The userver framework is built and maintained by developers at Yandex Urban Services Technology Platform, which powers Yandex Go, Yandex Eats, Yandex Lavka, and other products. As an open-source project, it also receives contributions from experts at other companies and tech enthusiasts, including students from leading Russian universities such as HSE and MIPT.

Yandex regularly open-sources its core technologies. Other notable releases include YTsaurus, a big data processing platform; YDB, a distributed database management system; and YaFSDP, a library for training large language models.

About userver

Userver is an asynchronous C++ framework for building services, microservices, and utilities, open-sourced by Yandex in 2022. It is designed for high-load, fault-tolerant systems at industrial scale and is actively used by C++ developers both internally at Yandex and by major tech companies across the global market.