# peter-lawrey/Java-Chronicle

Java Indexed Record Chronicle

Repository: https://github.com/peter-lawrey/Java-Chronicle
Canonical: https://ross.abutalabs.com/products/java-chronicle
Language: Java
License Family: other
Last push: 2020-10-12T19:32:37+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 5352, "days_push": 2151, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1218, forks 189 (observed 2026-08-28T04:04:01.648521+00:00)

## What it is
An ultra-low-latency, high-throughput persisted messaging and event-driven in-memory database library for Java, supporting durable distributed collections and inter-process communication with sub-microsecond latency. This original repository is deprecated in favor of OpenHFT Chronicle-Queue 3.x.

## Use cases
- persist millions of messages per second with nanosecond latency
- share data between Java processes faster than sockets
- build durable event logs that survive process restarts
- store collections larger than physical memory off-heap
- replay canned data for testing services

## When to choose
- studying the origins of the Chronicle family of libraries
- maintaining legacy code that depends on the original Chronicle API

## When to avoid
- starting a new project - use OpenHFT/Chronicle-Queue instead
- you need maintained releases or security fixes
- you need a license - this repo has none

## Facets
- artifact type: library
- maturity: abandoned
- function: message-queue, serialization, caching, database
- domain: databases, performance, microservices
- platform: jvm, windows
- tags: low-latency, off-heap, persisted-messaging, ipc, superseded, messaging, linux, macos

## Member repositories
- peter-lawrey/Java-Chronicle (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:01.648521+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 2026-08-30T06:17:05.066871+00:00, confidence not recorded.
  - readme: https://github.com/peter-lawrey/Java-Chronicle (fetched 2026-08-28T04:04:01.648521+00:00, sha de794b433510)
- Data as of 2026-08-30T08:39:29.467469+00:00.