# KairosDB vs OpenTSDB

| Attribute | KairosDB | OpenTSDB |
|---|---|---|
| **Vioscale score** | 25.3 (56% (medium)) | 29.2 (37% (low)) |
| activity.commits_last_30d | 0 | 0 |
| adoption.dependent_repos | 32 | 175 |
| adoption.github_stars | 1,762 | 5,065 |
| adoption.package_downloads_weekly | 9 | 22 |
| deployment.options | `{"self_hosted":true}` | `{"on_prem":true,"self_hosted":true}` |
| description.long | Open-source time series database that leverages Cassandra for storage, providing REST and Graphite protocol support for data ingestion and retrieval, with built-in aggregation functions and extensible architecture via plugins. | An open-source time series database built on Hadoop and HBase that stores metric data with millisecond precision and scales to millions of writes per second. |
| features.capabilities | `{"clustering":"distributed","data_model":"metrics","deployment":"self_hosted","downsampling":"continuous_aggregates","ingest_model":"push","licence_class":"source_available","retention_ttl":"manual","query_language":"REST API, Graphite protocol","replication_ha":true,"high_cardinality":"strong","sql_compatibility":"non_sql"}` | `{"clustering":"distributed","data_model":"metrics","deployment":"self_hosted","downsampling":"continuous_aggregates","ingest_model":"push","licence_class":"permissive_oss","retention_ttl":"manual"}` |
| integrations.count | 3 | - |
| integrations.list | `[{"name":"Cassandra"},{"name":"Graphite"},{"name":"Telnet"}]` | - |
| language.primary | Java | Java |
| license.spdx | Apache-2.0 | LGPL-2.1 |
| platform.support | `{"cli":true,"web":true}` | `{"web":true}` |
| pricing | `{"type":"open_source","sourceUrl":"https://kairosdb.github.io/","retrievedAt":"2026-08-13T23:03:34.808Z"}` | `{"type":"open_source","sourceUrl":"https://opentsdb.net/","retrievedAt":"2026-08-03T21:11:51.226Z"}` |
| pricing.model | open_source | open_source |
| pricing.price_level | free | free |
| release.cadence_days | 92 | 77 |
| release.history | `[{"url":"https://github.com/kairosdb/kairosdb/releases/tag/v1.3.0","date":"2021-08-09T04:31:37Z","type":"stable","version":"v1.3.0"},{"url":"https://github.com/kairosdb/kairosdb/releases/tag/v1.2.2","date":"2018-11-10T04:04:05Z","type":"stable","version":"v1.2.2"},{"url":"https://github.com/kairosdb/kairosdb/releases/tag/v1.3.0-beta1","date":"2018-04-14T04:43:02Z","type":"prerelease","version":"v1.3.0-beta1"},{"url":"https://github.com/kairosdb/kairosdb/releases/tag/v1.2.1","date":"2018-03-31T19:07:29Z","type":"stable","version":"v1.2.1"},{"url":"https://github.com/kairosdb/kairosdb/releases/tag/v1.2.0","date":"2018-02-01T14:54:51Z","type":"stable","version":"v1.2.0"},{"url":"https://github.com/kairosdb/kairosdb/releases/tag/v1.1.3","date":"2017-01-04T00:24:16Z","type":"stable","version":"v1.1.3"},{"url":"https://github.com/kairosdb/kairosdb/releases/tag/v1.1.2","date":"2016-09-08T04:29:39Z","type":"stable","version":"v1.1.2"},{"url":"https://github.com/kairosdb/kairosdb/releases/tag/v1.1.1","date":"2015-12-08T03:09:45Z","type":"stable","version":"v1.1.1"},{"url":"https://github.com/kairosdb/kairosdb/releases/tag/v1.1.0","date":"2015-11-05T23:22:46Z","type":"stable","version":"v1.1.0"},{"url":"https://github.com/kairosdb/kairosdb/releases/tag/v1.0.0","date":"2015-06-05T05:08:49Z","type":"stable","version":"v1.0.0"},{"url":"https://github.com/kairosdb/kairosdb/releases/tag/v0.9.5beta2","date":"2015-04-03T13:25:15Z","type":"prerelease","version":"v0.9.5beta2"},{"url":"https://github.com/kairosdb/kairosdb/releases/tag/v0.9.5beta1","date":"2015-01-26T20:29:20Z","type":"prerelease","version":"v0.9.5beta1"},{"url":"https://github.com/kairosdb/kairosdb/releases/tag/v0.9.4","date":"2014-07-07T21:30:43Z","type":"stable","version":"v0.9.4"},{"url":"https://github.com/kairosdb/kairosdb/releases/tag/v0.9.3","date":"2014-06-18T16:10:41Z","type":"stable","version":"v0.9.3"},{"url":"https://github.com/kairosdb/kairosdb/releases/tag/v0.9.2","date":"2014-06-18T16:51:02Z","type":"stable","version":"v0.9.2"}]` | `[{"url":"https://github.com/OpenTSDB/opentsdb/releases/tag/v2.5.0RC1","date":"2024-12-12T20:03:34Z","type":"prerelease","version":"v2.5.0RC1"},{"url":"https://github.com/OpenTSDB/opentsdb/releases/tag/v2.4.1","date":"2021-09-02T22:28:30Z","type":"stable","version":"v2.4.1"},{"url":"https://github.com/OpenTSDB/opentsdb/releases/tag/v2.4.0","date":"2018-12-17T02:38:32Z","type":"stable","version":"v2.4.0"},{"url":"https://github.com/OpenTSDB/opentsdb/releases/tag/v2.3.2","date":"2018-12-17T01:08:47Z","type":"stable","version":"v2.3.2"},{"url":"https://github.com/OpenTSDB/opentsdb/releases/tag/v2.3.1","date":"2018-05-22T00:27:14Z","type":"stable","version":"v2.3.1"},{"url":"https://github.com/OpenTSDB/opentsdb/releases/tag/v2.4.0RC2","date":"2017-10-09T04:53:29Z","type":"prerelease","version":"v2.4.0RC2"},{"url":"https://github.com/OpenTSDB/opentsdb/releases/tag/v2.3.0","date":"2016-12-31T20:18:53Z","type":"stable","version":"v2.3.0"},{"url":"https://github.com/OpenTSDB/opentsdb/releases/tag/v2.2.2","date":"2016-12-29T18:35:21Z","type":"stable","version":"v2.2.2"},{"url":"https://github.com/OpenTSDB/opentsdb/releases/tag/v2.3.0RC2","date":"2016-10-08T19:28:41Z","type":"prerelease","version":"v2.3.0RC2"},{"url":"https://github.com/OpenTSDB/opentsdb/releases/tag/v2.2.1","date":"2016-10-08T19:07:28Z","type":"stable","version":"v2.2.1"},{"url":"https://github.com/OpenTSDB/opentsdb/releases/tag/v2.3.0RC1","date":"2016-05-02T19:00:34Z","type":"prerelease","version":"v2.3.0RC1"},{"url":"https://github.com/OpenTSDB/opentsdb/releases/tag/v2.2.0","date":"2016-02-15T01:45:12Z","type":"stable","version":"v2.2.0"},{"url":"https://github.com/OpenTSDB/opentsdb/releases/tag/v2.1.4","date":"2016-02-14T21:37:37Z","type":"stable","version":"v2.1.4"},{"url":"https://github.com/OpenTSDB/opentsdb/releases/tag/v2.2.0RC3","date":"2015-11-11T21:06:00Z","type":"prerelease","version":"v2.2.0RC3"},{"url":"https://github.com/OpenTSDB/opentsdb/releases/tag/v2.1.3","date":"2015-11-11T20:54:21Z","type":"stable","version":"v2.1.3"},{"url":"https://github.com/OpenTSDB/opentsdb/releases/tag/v2.2.0RC2","date":"2015-11-10T02:20:02Z","type":"prerelease","version":"v2.2.0RC2"},{"url":"https://github.com/OpenTSDB/opentsdb/releases/tag/v2.1.2","date":"2015-11-10T01:15:06Z","type":"stable","version":"v2.1.2"},{"url":"https://github.com/OpenTSDB/opentsdb/releases/tag/v2.2.0RC1","date":"2015-09-12T20:50:35Z","type":"prerelease","version":"v2.2.0RC1"},{"url":"https://github.com/OpenTSDB/opentsdb/releases/tag/2.1.1","date":"2015-09-12T19:49:38Z","type":"stable","version":"2.1.1"},{"url":"https://github.com/OpenTSDB/opentsdb/releases/tag/v2.1.0","date":"2015-05-07T04:46:55Z","type":"stable","version":"v2.1.0"}]` |
| reliability.status_page | yes | yes |
| security.scorecard | 3.4 | 2.5 |
| security.vulnerabilities | `{"count":1,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=maven&package_name=org.kairosdb%3Akairosdb&per_page=100","last_12m":0,"max_severity":"MODERATE"}` | `{"count":7,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=maven&package_name=net.opentsdb%3Aopentsdb&per_page=100","last_12m":0,"max_severity":"CRITICAL"}` |

## Capabilities (Time-Series Databases)

| Capability | KairosDB | OpenTSDB |
|---|:--:|:--:|
| **Query** |  |  |
| Query language (SQL / PromQL / InfluxQL-Flux / Graphite) | REST API, Graphite protocol | - |
| SQL compatibility | Non-SQL | - |
| **Ingest** |  |  |
| Ingest model | Push | Push |
| **Model** |  |  |
| Data model | Metrics (labels/tags) | Metrics (labels/tags) |
| **Lifecycle** |  |  |
| Downsampling / rollups | Continuous aggregates | Continuous aggregates |
| Retention / TTL | Manual | Manual |
| **Storage** |  |  |
| Compression (columnar / delta / Gorilla) | - | - |
| **Performance** |  |  |
| High-cardinality handling | Strong | - |
| **Scale** |  |  |
| Clustering / horizontal scale | Distributed / sharded | Distributed / sharded |
| Replication / HA | ✓ | - |
| **Deployment** |  |  |
| Deployment | Self-hosted | Self-hosted |
| **Interop** |  |  |
| Prometheus remote-write compatible | - | - |
| **Licensing** |  |  |
| Licence class | Source-available | Permissive OSS |

*Source: Vioscale. Generated 2026-09-01T17:35:23.689Z. "-" = undocumented, not absent.*