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Tech riderRev. 22 Sept 2026

KairosDB

Ch 196.1of 36 Time-Series Databases
  1. 1Runs onAPI, Linux, self-hosted
  2. 2CostsNot stated by the maker
  3. 3Deploymentself hosted
  4. 4Retention policiesYes
  5. 5Horizontal scalingYes
  6. 6Ingestion methodsREST API, Telnet, Graphite plaintext, Graphite pickle, plugins
5 lines stated Written from the maker's own pages: kairosdb.github.io
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The KairosDB homepage

Overview

KairosDB is ranked #19 of 36 in time-series databases on Specifiction. It runs on API, Linux, Self-hosted.

Compared on time-series databases

Deployment
self_hostedkairosdb.github.io
Retention policies
Yeskairosdb.github.io
Horizontal scaling
Yeskairosdb.github.io
Ingestion methods
REST API, Telnet, Graphite plaintext, Graphite pickle, pluginskairosdb.github.io

Facts

Product
KairosDB is a distributed time-series database built on Cassandra.kairosdb.github.io · 5 Oct 2026
Data collection
It accepts data through Telnet, REST, Graphite, and plugins.kairosdb.github.io · 5 Oct 2026
Storage backends
The documentation describes H2 as the default in-memory datastore and Cassandra as an alternative for persistent storage.kairosdb.github.io · 5 Oct 2026
Queries
The REST API can query metric data by metric name and time range, optionally filtering by tags, and supports aggregation and downsampling.kairosdb.github.io · 5 Oct 2026
Aggregators
Built-in aggregators include min, max, sum, count, and mean.kairosdb.github.io · 5 Oct 2026
Web interface
A default install serves a browser-based query page that the documentation describes as primarily for development.kairosdb.github.io · 5 Oct 2026
Import and export
The server provides command-line tools to import and export data.kairosdb.github.io · 5 Oct 2026
Extensibility
Guice-based plugins can add data point listeners, datastores, protocol handlers, and system monitors.kairosdb.github.io · 5 Oct 2026
Java client
A separate Java client library is available to send metrics and query data points.kairosdb.github.io · 5 Oct 2026
Requirements
The installation guide says KairosDB runs with Java 1.8 or later.kairosdb.github.io · 5 Oct 2026
Notable limit
The Cassandra row width defaults to about three weeks and cannot be changed after the schema is created without risking data loss.kairosdb.github.io · 5 Oct 2026
License
The project repository identifies the license as Apache License 2.0.github.com · 5 Oct 2026
Support
The project README directs users to a KairosDB discussion group for questions and community involvement.github.com · 5 Oct 2026
Security
The KairosDB pages reviewed do not state security certifications or compliance claims.kairosdb.github.io · 5 Oct 2026

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Where it ranks on Specifiction

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Sources