# PumpkinDB/PumpkinDB

Immutable Ordered Key-Value Database Engine

Repository: https://github.com/PumpkinDB/PumpkinDB
Canonical: https://ross.abutalabs.com/products/pumpkindb
Homepage: http://pumpkindb.org
Language: Rust
License: MPL-2.0
License Family: copyleft
Topics: event-sourcing, database, rust, forth, query, indexing, key-value, storage, concatenative
Last push: 2020-03-21T18:48:37+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 3500, "days_push": 2356, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1402, forks 61 (observed 2026-08-28T04:04:37.393244+00:00)

## What it is
PumpkinDB is an immutable ordered key-value database engine written in Rust, featuring ACID transactions, persistent storage, and an embedded Forth-inspired scripting language (PumpkinScript). It is designed for event sourcing and similar architectures where data, once written, is never overwritten or deleted.

## Use cases
- build an event sourcing system with an immutable data store
- store append-only event logs with ACID guarantees
- embed a programmable key-value database in a Rust application
- index and query immutable binary data close to storage
- prototype application-specific databases with a stack-based scripting language

## When to choose
- you need strict immutability and a temporal view of your data
- you want to build event-sourced architectures with lazy domain binding
- you prefer processing data near storage via an embedded scripting language

## When to avoid
- you need a general-purpose mutable relational or document database
- you require production-grade support and active maintenance
- you want a mature ecosystem with drivers and tooling for mainstream stacks

## Facets
- artifact type: library
- maturity: abandoned
- function: database, serialization, concurrency
- domain: databases, developer-tools
- platform: windows, rust
- tags: key-value-store, immutable-data, event-sourcing, pumpkinscript, stack-based-language, embedded-database, linux, macos

## Member repositories
- PumpkinDB/PumpkinDB (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:37.393244+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 2026-08-30T04:38:57.808849+00:00, confidence not recorded.
  - readme: https://github.com/PumpkinDB/PumpkinDB (fetched 2026-08-28T04:04:37.393244+00:00, sha e243ac742416)
  - homepage: http://pumpkindb.org (fetched 2026-08-29T11:52:55.137827+00:00, sha 6c01897b7fde)
- Data as of 2026-08-30T08:39:29.467469+00:00.