# Azure Cosmos DB vs RethinkDB

| Attribute | Azure Cosmos DB | RethinkDB |
|---|---|---|
| **vioscaleAI score** | 57.3 (31% (low)) | 40.7 (57% (medium)) |
| activity.commits_last_30d | - | 0 |
| adoption.dependent_repos | - | 1,283 |
| adoption.github_stars | - | 27,005 |
| adoption.package_downloads_weekly | - | 12,928 |
| content.faq | `[{"answer":"Azure Cosmos DB is a NoSQL database service on Azure that prioritizes minimal latency and the ability to handle massive scale. It includes built-in vector search capabilities for AI-driven applications and is managed fully by Microsoft with no infrastructure to operate. It is indexed under NoSQL Databases.","source":"https://azure.microsoft.com/en-us/pricing/details/azure-sql-managed-instance/single/","question":"What is Azure Cosmos DB?","confidence":0.6},{"answer":"Azure Cosmos DB offers a free tier, so you can start without paying. Pricing changes often, so verify at source before relying on it.","source":"https://azure.microsoft.com/acom/etc.clientlibs/onecloud/components/content/reimagine/atomic/carousel/v1/carousel/clientlibs/pricing-styles.ACSHASHbcdafd3e07059ae596973551430292fc.min.css","question":"Is Azure Cosmos DB free?","confidence":0.6},{"answer":"We have confirmed browser-based access to Azure Cosmos DB. That is the extent of what we could verify from public sources, so it may well offer desktop or mobile clients we have not indexed.","source":"https://azure.microsoft.com/acom/etc.clientlibs/onecloud/components/content/reimagine/atomic/carousel/v1/carousel/clientlibs/pricing-styles.ACSHASHbcdafd3e07059ae596973551430292fc.min.css","question":"What platforms does Azure Cosmos DB support?","confidence":0.6},{"answer":"We have only confirmed a cloud / SaaS deployment for Azure Cosmos DB, so it appears to be vendor-hosted. If a self-hosted option exists we have not found it documented publicly.","source":"https://azure.microsoft.com/en-us/pricing/details/azure-sql-managed-instance/single/","question":"Can Azure Cosmos DB be self-hosted?","confidence":0.6},{"answer":"We have independently confirmed GDPR for Azure Cosmos DB. Certifications we do not list are ones we have not been able to verify from public sources, which is not the same as Azure Cosmos DB not holding them. Always confirm compliance directly before you rely on it.","source":"https://azure.microsoft.com/security","question":"What security certifications does Azure Cosmos DB have?","confidence":0.7},{"answer":"Azure Cosmos DB is available worldwide. The vendor is headquartered in the United States.","source":"https://azure.microsoft.com/acom/etc.clientlibs/onecloud/components/content/reimagine/atomic/carousel/v1/carousel/clientlibs/pricing-styles.ACSHASHbcdafd3e07059ae596973551430292fc.min.css","question":"Where is Azure Cosmos DB available?","confidence":0.75}]` | `[{"answer":"An open-source NoSQL database built on a distributed architecture that eliminates polling by pushing fresh data to applications automatically. It stores flexible JSON documents and is designed to simplify building applications that display live information to users. It is indexed under NoSQL Databases.","source":"https://rethinkdb.com","question":"What is RethinkDB?","confidence":0.6},{"answer":"RethinkDB is open source, so it can be self-hosted and used at no licence cost. Pricing changes often, so verify at source before relying on it.","source":"https://rethinkdb.com","question":"Is RethinkDB free to use?","confidence":0.6},{"answer":"We have confirmed browser-based access to RethinkDB. That is the extent of what we could verify from public sources, so it may well offer desktop or mobile clients we have not indexed.","source":"https://rethinkdb.com","question":"What platforms does RethinkDB support?","confidence":0.6},{"answer":"Yes. RethinkDB can be deployed self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://rethinkdb.com","question":"Can RethinkDB be self-hosted?","confidence":0.6},{"answer":"We have confirmed 4 integrations for RethinkDB, including Elasticsearch, RabbitMQ, Rails and PubNub. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://rethinkdb.com","question":"What does RethinkDB integrate with?","confidence":0.6}]` |
| deployment.options | `{"cloud":true}` | `{"self_hosted":true}` |
| description.long | Azure Cosmos DB is a NoSQL database service on Azure that prioritizes minimal latency and the ability to handle massive scale. It includes built-in vector search capabilities for AI-driven applications and is managed fully by Microsoft with no infrastructure to operate. | A database that eliminates polling by automatically streaming query changes to connected clients, enabling developers to build responsive real-time applications with less complexity. |
| features.capabilities | `{"schema":"schemaless","hosting":"cloud","data_model":"multi_model","multi_region":true,"license_class":"proprietary","vector_search":true}` | `{"schema":"schemaless","hosting":"self","data_model":"document","replication":"primary_secondary","license_class":"permissive","change_streams":true,"secondary_indexes":"yes"}` |
| integrations.count | - | 4 |
| integrations.list | - | `[{"name":"Elasticsearch"},{"name":"RabbitMQ"},{"name":"Rails"},{"name":"PubNub"}]` |
| language.primary | - | C++ |
| market.availability | `{"hqCountry":"US","primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | - |
| platform.support | `{"web":true}` | `{"mac":true,"web":true,"linux":true,"windows":true}` |
| pricing | `{"freeTier":true,"sourceUrl":"https://azure.microsoft.com/en-us/pricing/","retrievedAt":"2026-09-22T14:42:20.588Z"}` | `{"type":"open_source","freeTier":true,"sourceUrl":"https://rethinkdb.com","retrievedAt":"2026-10-13T22:31:08.485Z"}` |
| pricing.free_tier | yes | yes |
| pricing.model | freemium | open_source |
| pricing.price_level | low | free |
| pricing.transparent | yes | - |
| release.cadence_days | - | 25 |
| release.history | - | `[{"url":"https://github.com/rethinkdb/rethinkdb/releases/tag/v2.4.4","date":"2023-12-11T01:42:50Z","type":"stable","version":"v2.4.4"},{"url":"https://github.com/rethinkdb/rethinkdb/releases/tag/v2.4.3","date":"2023-02-05T01:14:53Z","type":"stable","version":"v2.4.3"},{"url":"https://github.com/rethinkdb/rethinkdb/releases/tag/v2.4.2","date":"2022-05-07T19:28:23Z","type":"stable","version":"v2.4.2"},{"url":"https://github.com/rethinkdb/rethinkdb/releases/tag/v2.4.1","date":"2020-08-14T19:51:04Z","type":"stable","version":"v2.4.1"},{"url":"https://github.com/rethinkdb/rethinkdb/releases/tag/v2.4.0","date":"2019-12-19T18:30:54Z","type":"stable","version":"v2.4.0"},{"url":"https://github.com/rethinkdb/rethinkdb/releases/tag/v2.3.6","date":"2017-07-23T02:20:28Z","type":"stable","version":"v2.3.6"},{"url":"https://github.com/rethinkdb/rethinkdb/releases/tag/v2.3.5","date":"2016-08-29T21:19:52Z","type":"stable","version":"v2.3.5"},{"url":"https://github.com/rethinkdb/rethinkdb/releases/tag/v2.3.4","date":"2016-06-04T05:27:48Z","type":"stable","version":"v2.3.4"},{"url":"https://github.com/rethinkdb/rethinkdb/releases/tag/v2.3.3","date":"2016-06-01T18:54:14Z","type":"stable","version":"v2.3.3"},{"url":"https://github.com/rethinkdb/rethinkdb/releases/tag/v2.3.2","date":"2016-05-06T19:00:05Z","type":"stable","version":"v2.3.2"},{"url":"https://github.com/rethinkdb/rethinkdb/releases/tag/v2.3.1","date":"2016-04-23T02:13:43Z","type":"stable","version":"v2.3.1"},{"url":"https://github.com/rethinkdb/rethinkdb/releases/tag/v2.3.0","date":"2016-04-06T15:57:30Z","type":"stable","version":"v2.3.0"},{"url":"https://github.com/rethinkdb/rethinkdb/releases/tag/v2.2.6","date":"2016-03-28T18:08:01Z","type":"stable","version":"v2.2.6"},{"url":"https://github.com/rethinkdb/rethinkdb/releases/tag/v2.2.5","date":"2016-02-24T23:33:36Z","type":"stable","version":"v2.2.5"},{"url":"https://github.com/rethinkdb/rethinkdb/releases/tag/v2.2.4","date":"2016-02-01T19:17:04Z","type":"stable","version":"v2.2.4"},{"url":"https://github.com/rethinkdb/rethinkdb/releases/tag/v2.1.6","date":"2016-02-01T19:14:47Z","type":"stable","version":"v2.1.6"},{"url":"https://github.com/rethinkdb/rethinkdb/releases/tag/v2.2.3-1","date":"2016-01-11T20:22:20Z","type":"stable","version":"v2.2.3-1"},{"url":"https://github.com/rethinkdb/rethinkdb/releases/tag/v2.2.2","date":"2015-12-21T09:02:59Z","type":"stable","version":"v2.2.2"},{"url":"https://github.com/rethinkdb/rethinkdb/releases/tag/v2.2.1","date":"2015-11-17T09:14:41Z","type":"stable","version":"v2.2.1"},{"url":"https://github.com/rethinkdb/rethinkdb/releases/tag/v2.2.0","date":"2015-11-12T15:26:33Z","type":"stable","version":"v2.2.0"}]` |
| reliability.status_page | yes | - |
| security.gdpr | yes | - |
| security.scorecard | - | 3.3 |
| security.trust_center | https://azure.microsoft.com/en-us/explore/security/ | - |
| security.vulnerabilities | - | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=rethinkdb&per_page=100","last_12m":0,"max_severity":null}` |

## Capabilities (NoSQL Databases)

| Capability | Azure Cosmos DB | RethinkDB |
|---|:--:|:--:|
| **Core** |  |  |
| Data model | Multi-model | Document |
| **Query** |  |  |
| Query language | - | - |
| **Consistency** |  |  |
| Consistency | - | - |
| **Transactions** |  |  |
| Transactions | - | - |
| **Indexing** |  |  |
| Secondary indexes | - | Yes |
| **Scale** |  |  |
| Partitioning / sharding | - | - |
| Multi-region | ✓ | - |
| **Replication** |  |  |
| Replication topology | - | Primary-secondary |
| **Deployment** |  |  |
| Hosting | Cloud only | Self-hosted only |
| **Schema** |  |  |
| Schema | Schemaless | Schemaless |
| **Features** |  |  |
| TTL / auto-expiry | - | - |
| Change streams / CDC | - | ✓ |
| Vector / search built-in | ✓ | - |
| **Licensing** |  |  |
| Licence class | Proprietary | Permissive OSS |

*Source: vioscaleAI. Generated 2026-10-16T19:06:35.263Z. "-" = undocumented, not absent.*