Apache BookKeeper

Replicated append-only ledger storage service for write-ahead logs and message journals.

Provider: default
Kind: Event store
Category: Messaging
Official docs: https://bookkeeper.apache.org/docs/reference/config

Properties · 3 set by this component

property	type	values	required	kind default	this component
journalSyncData · component property	boolean	—	no	true	inherited
journaled	boolean	—	no	true	▸ true
managed	boolean	—	no	false	▸ false
metadataStore · component property	enum	zookeeper \| etcd	no	zookeeper	inherited
replication	enum	none \| raft \| primary-replica	no	none	inherited
role	enum	journal \| sequencer	no	journal	▸ journal
snapshotIntervalEvents	integer	—	no	—	inherited
storage	enum	mmap \| rocksdb \| database	no	database	inherited
tlsEnabled · component property	boolean	—	no	false	inherited

Rules that apply · 1

Every rule whose selector covers this component's kind or its category. Whether a rule fires depends on the design: its properties, its edges and its groups.

Stateful engine pinned to a single zoneerror

stateful-engine-pinned-to-single-zone

A matching engine, coordination service or event store living in exactly one availability zone, with no failover and no replication, is lost with that zone. Everything that depends on it stops with it.

— all of these hold:
— the node sits inside exactly 1 availability-zone group
— any of these hold:
— the node's `failover` is "none"
— the node's `replicated` is false
— the node's `replication` is "none"

Use it in a design

nodes:
  - { id: "bookkeeper", component: "bookkeeper" }

Other Event store products · 4

Axon Serveraxon-serverevent-store Generic event storeevent-storeevent-store EventStoreDBeventstoredbevent-store Raft event lograft-event-logevent-store

Source

1# yaml-language-server: $schema=../../schema/component.schema.json
2# Apache BookKeeper: append-only ledgers striped across an ensemble of bookies. Entries are fsynced to
3# the journal before acknowledgement (journalSyncData is enabled by default) and cluster metadata lives
4# in ZooKeeper ("BookKeeper Concepts and Architecture", "BookKeeper Configuration").
5schemaVersion: "1"
6type: "component"
7id: "bookkeeper"
8kind: "event-store"
9provider: "default"
10docs: "https://bookkeeper.apache.org/docs/reference/config"
11defaults:
12  journaled: true
13  role: "journal"
14  managed: false
15properties:
16  journalSyncData:
17    type: "boolean"
18    default: true
19  metadataStore:
20    type: "enum"
21    values: ["zookeeper", "etcd"]
22    default: "zookeeper"
23  tlsEnabled:
24    type: "boolean"
25    default: false

The same page as markdown, for an agent: /catalogue/components/bookkeeper.md