# lovoo/goka

Goka is a compact yet powerful distributed stream processing library for Apache Kafka written in Go.

Repository: https://github.com/lovoo/goka
Canonical: https://ross.abutalabs.com/products/goka
Language: Go
License: BSD-3-Clause
License Family: permissive
Topics: goka, stream, processing, kafka, golang, microservices
Last push: 2026-08-25T08:20:41+00:00

## Health v2 (maintenance only)
Score: 90/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 99, release rhythm 72, longevity 100
- inputs: {"age_days": 3445, "days_push": 8, "days_rel": 27, "gap_med": 132.0, "n_releases_24m": 5}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2538, forks 184 (observed 2026-08-28T04:06:59.228178+00:00)

## What it is
Goka is a compact yet powerful distributed stream processing library for Apache Kafka written in Go. It extends Kafka consumer groups by binding persistent state tables to them, enabling scalable and fault-tolerant microservices with at-least-once delivery semantics.

## Use cases
- process kafka streams in go
- build stateful kafka microservices
- scale stream processing across instances
- persist processing state in kafka
- monitor kafka stream processors via web ui
- handle kafka messages with callback functions
- build fault-tolerant event-driven services

## When to choose
- you need distributed stream processing on kafka in go
- you want state tables persisted in kafka with automatic rebalancing
- you need fault tolerance and at-least-once semantics out of the box
- you want built-in monitoring and introspection of processor state

## When to avoid
- you use a message broker other than kafka
- you need exactly-once processing semantics
- you work outside the go ecosystem
- you need complex sql-based stream transformations

## Facets
- artifact type: library
- maturity: active
- function: streaming, message-queue, microservices, middleware, monitoring
- domain: microservices, backend
- platform: go, windows, cross-platform
- tags: kafka, stream-processing, consumer-groups, stateful-processing, event-driven, at-least-once, sarama, messaging, data-engineering, linux, macos

## Member repositories
- lovoo/goka (main) score 90

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:59.228178+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 2026-08-30T02:25:11.540204+00:00, confidence not recorded.
  - readme: https://github.com/lovoo/goka (fetched 2026-08-28T04:06:59.228178+00:00, sha 4add33f47679)
- Data as of 2026-08-30T08:39:29.467469+00:00.