# reactor/lite-rx-api-hands-on

Lite Rx API Hands-On with Reactor Core 3

Repository: https://github.com/reactor/lite-rx-api-hands-on
Canonical: https://ross.abutalabs.com/products/lite-rx-api-hands-on
Language: Java
License: Apache-2.0
License Family: permissive
Last push: 2025-09-26T18:12:15+00:00

## Health v2 (maintenance only)
Score: 52/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 44, release rhythm 35, longevity 100
- inputs: {"age_days": 3866, "days_push": 341, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1069, forks 960 (observed 2026-08-28T04:03:27.824815+00:00)

## What it is
A hands-on tutorial repository for learning the lite reactive Rx API of Reactor Core 3.x (Flux and Mono) in Java. Learners fix TODOs across eleven parts to make StepVerifier-based unit tests pass, with a solution branch for comparison.

## Use cases
- learn reactive programming with Reactor Core
- practice using Flux and Mono
- hands-on exercises for reactive streams in Java
- learn how to test reactive code with StepVerifier
- self-paced workshop on Project Reactor

## When to choose
- you want an interactive, test-driven way to learn Reactor Core 3
- you prefer learning by fixing failing unit tests
- you are a Java developer new to reactive programming

## When to avoid
- you need production reactive code or a library to depend on
- you want a comprehensive reference or documentation rather than exercises
- you work outside the JVM/Java ecosystem

## Facets
- artifact type: learning-resource
- maturity: active
- function: testing, developer-tools
- domain: tutorials, developer-tools, programming-languages
- platform: jvm, cli
- tags: reactive-programming, reactor-core, hands-on, workshop, kata, unit-testing

## Member repositories
- reactor/lite-rx-api-hands-on (main) score 52

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:27.824815+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T06:54:36.313073+00:00, confidence not recorded.
  - readme: https://github.com/reactor/lite-rx-api-hands-on (fetched 2026-08-28T04:03:27.824815+00:00, sha 8ec67fb40bdb)
- Data as of 2026-08-30T08:39:29.467469+00:00.