# twitter-archive/distributedlog

A high performance replicated log service. (The development is moved to Apache Incubator)

Repository: https://github.com/twitter-archive/distributedlog
Canonical: https://ross.abutalabs.com/products/distributedlog
Homepage: http://distributedlog.incubator.apache.org/
Language: Java
License: Apache-2.0
License Family: permissive
Archived: true
Last push: 2020-02-25T19:15:10+00:00

## Health v2 (maintenance only)
Score: 10/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 3878, "days_push": 2381, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: archived
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2203, forks 283 (observed 2026-08-28T04:06:25.771648+00:00)

## What it is
Apache DistributedLog is a high-throughput, low-latency replicated log service offering durability, replication, and strong ordering guarantees for real-time applications. Development has moved into Apache BookKeeper, so this archived Twitter repository is no longer the active codebase.

## Use cases
- build a durable write-ahead log for a distributed database
- replicate state machine logs with strong ordering guarantees
- ingest real-time event streams at high throughput
- implement reliable pub-sub messaging with low latency writes
- store append-only logs for distributed systems
- fan-out log streams to many concurrent readers

## When to choose
- you need a strongly ordered, replicated log stream on the JVM
- you want millisecond-latency durable writes for OLTP or WAL workloads
- you are already using Apache BookKeeper or ZooKeeper infrastructure

## When to avoid
- you want active development - use Apache BookKeeper, which absorbed this project
- you need a simple message queue rather than a low-level log abstraction
- you are not on the JVM ecosystem

## Facets
- artifact type: library
- maturity: maintenance
- function: message-queue, streaming, database
- domain: microservices, big-data
- platform: jvm
- tags: replicated-log, write-ahead-log, bookkeeper, pub-sub, event-streaming, apache, messaging, real-time, linux, docker

## Member repositories
- twitter-archive/distributedlog (main) score 10

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:25.771648+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 2026-08-30T02:47:00.947815+00:00, confidence not recorded.
  - readme: https://github.com/twitter-archive/distributedlog (fetched 2026-08-28T04:06:25.771648+00:00, sha 5f3ba3cf7b80)
- Data as of 2026-08-30T08:39:29.467469+00:00.