datacrypt-project/hitchhiker-tree

Health v2 · maintenance only

Flags: no_releases

Adoption not part of the score

1217 stars · 63 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

A Clojure library implementing hitchhiker trees, a functional, persistent sorted key-value data structure combining fractal trees with immutable data structures. It supports incremental persistence, lazy loading from pluggable backing stores, and snapshotting, with an included Redis-backed storage layer (Outboard).

Use cases

• store sorted key-value data larger than JVM heap in Clojure
• persist an in-memory data structure incrementally without full serialization
• create cheap immutable snapshots of a large dataset for querying
• fork a persistent data tree like a git repository
• build a scalable open-source Datomic-like storage backend
• restart an application without reloading all data from scratch

When to choose

• you're in Clojure/JVM and need a persistent, snapshottable sorted map beyond memory limits
• you want incremental persistence with lazy loading from a custom backing store
• you need functional/immutable semantics at large scale

When to avoid

• you need a production-grade, actively maintained database
• you're outside the Clojure/JVM ecosystem
• you need rich query features beyond sorted key-value lookups

Facets

library · maturity maintenance

database serialization caching databases developer-tools jvm jvm-scripting clojure persistent-data-structures sorted-map fractal-trees snapshots functional-data-structures off-heap redis-backend data-engineering

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