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Dev tools · September 24, 2025

Mosaic – A Kotlin framework for cleaner back end code

Backend APIs often grow into large orchestration classes full of duplicated calls and manual concurrency. I’ve been working on Mosaic, a Kotlin framework that composes responses out of small, request-scoped “tiles.” Each tile runs once per request, dependencies resolve automatically, and independent tiles execute in parallel without boilerplate. It’s still early (v0.2.0), but working today for caching, concurrency, and testability. Curious to hear feedback on the approach. GitHub: https://github.com/Nick-Abbott/Mosaic Maven Central: org.buildmosaic:mosaic-core:0.2.0

Mosaic – A Kotlin framework for cleaner back end code launched on September 24, 2025 with 25 votes, #538 of 8,160 launches that month and more than 90% of that year's launches. The site was still online in September 2026, 1 year on.

Visit github.com ↗Alternativestop 7% of September 2025

In plain words

Mosaic is a Kotlin framework for building backend APIs that breaks complex orchestration logic into small, reusable "tiles." Each tile executes once per request with automatic dependency resolution, and independent tiles run in parallel without manual concurrency code. The framework is designed to reduce duplication and boilerplate while improving caching, concurrency handling, and testability. Currently at version 0.2.0, it is available on Maven Central for developers building Kotlin backends.

written from the facts on this page · September 2026

From the sources

A Kotlin framework for writing cleaner backend APIs through intelligent data composition - Nick-Abbott/Mosaic

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