# Apache Cassandra vs MongoDB

**Leader by vioscaleAI score:** MongoDB

| Attribute | Apache Cassandra | MongoDB |
|---|---|---|
| **vioscaleAI score** | 51.9 (40% (low)) | 75.7 (71% (medium)) |
| activity.commits_last_30d | 100 | 100 |
| adoption.dependent_repos | 0 | 8 |
| adoption.github_stars | 10,112 | 28,614 |
| adoption.stackoverflow_questions | - | 170,000 |
| content.faq | `[{"answer":"An open-source database platform designed for storing and querying massive datasets across distributed server clusters, with built-in fault tolerance and the ability to survive entire data center outages. It is indexed under NoSQL Databases.","source":"https://cassandra.apache.org","question":"What is Apache Cassandra?","confidence":0.6},{"answer":"Apache Cassandra is open source, so it can be self-hosted and used at no licence cost. It is released under the Apache-2.0 licence. Pricing changes often, so verify at source before relying on it.","source":"https://cassandra.apache.org","question":"Is Apache Cassandra free to use?","confidence":0.6},{"answer":"Apache Cassandra supports Linux and a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://cassandra.apache.org","question":"What platforms does Apache Cassandra support?","confidence":0.6},{"answer":"Yes. Apache Cassandra can be deployed cloud / SaaS, hybrid, on-premise and self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://cassandra.apache.org","question":"Can Apache Cassandra be self-hosted?","confidence":0.6},{"answer":"We have confirmed 26 integrations for Apache Cassandra, including Amazon Keyspaces, Azure Cosmos DB, Azure Managed Instance for Apache Cassandra, DataStax Astra, Elassandra, Instaclustr, Docker and DataStax Studio, plus 18 more. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://cassandra.apache.org","question":"What does Apache Cassandra integrate with?","confidence":0.6},{"answer":"Yes. Apache Cassandra is published under the Apache-2.0 licence, a permissive licence that generally allows commercial use and modification. Licence terms can change between releases, so verify against the repository for the version you intend to use.","source":"https://github.com/apache/cassandra","question":"Is Apache Cassandra open source?","confidence":0.95}]` | `[{"answer":"MongoDB is a document database that stores data in flexible, JSON-like formats rather than rigid relational tables. It is designed for modern application development and supports various workload types including operational transactions, real-time search, vector search for AI applications, and streaming data processing. The flexible schema allows applications to evolve without downtime or schema migrations.","source":"https://www.mongodb.com/docs/manual/introduction/","question":"What is MongoDB and what type of database is it?","confidence":0.95},{"answer":"MongoDB is open source under the Server Side Public License (SSPL) v1.0, which requires that enhancements to MongoDB be shared with the community. Drivers are licensed under Apache License 2.0. MongoDB also offers a commercial license for organizations whose legal requirements are incompatible with SSPL, and a separately available MongoDB Enterprise Advanced edition.","source":"https://www.mongodb.com/community/licensing","question":"Is MongoDB open source and what license does it use?","confidence":0.95},{"answer":"MongoDB provides official client libraries for almost all modern programming languages and is compatible with popular application frameworks. Common stacks include MERN (MongoDB, Express, React, Node.js) and MEAN (MongoDB, Express, Angular, Node.js). Developers can access language-specific API documentation and driver references for their chosen technology stack.","source":"https://www.mongodb.com/docs/","question":"What programming languages and frameworks does MongoDB support?","confidence":0.92},{"answer":"MongoDB offers three deployment models: MongoDB Atlas, a fully managed cloud service available on AWS, Azure, and Google Cloud; MongoDB Enterprise Advanced for self-managed on-premises or private cloud deployments; and MongoDB Community Edition for open-source local development. Each option provides different levels of automation, support, and operational responsibility.","source":"https://www.mongodb.com","question":"What deployment options are available for MongoDB?","confidence":0.93},{"answer":"MongoDB Atlas operates on a pay-as-you-go model with a free-forever M0 tier (512 MB storage) for learning and exploration, flexible hourly clusters for development, and dedicated clusters starting around $57 per month for production workloads. Enterprise Advanced pricing is custom and available through direct sales. Costs vary based on cluster size, storage, data transfer, and optional add-on services like vector search and stream processing.","source":"https://www.mongodb.com/pricing","question":"What is MongoDB's pricing model?","confidence":0.9},{"answer":"MongoDB includes encryption at rest and in transit via TLS/SSL, multiple authentication methods (SCRAM, X.509, Kerberos, LDAP, OIDC), role-based access control, queryable encryption, client-side field-level encryption, IP access lists, and audit logging. MongoDB Atlas comes preconfigured with secure default settings and supports network peering and private endpoints across major cloud providers.","source":"https://www.mongodb.com/docs/manual/security/","question":"What enterprise security features does MongoDB provide?","confidence":0.92},{"answer":"MongoDB uses flexible JSON-like documents instead of rigid table schemas, allowing data models to change without downtime. Embedded documents and arrays reduce the need for joins, which can improve query performance for certain workloads. The lack of enforced schemas supports polymorphic data structures where different documents in the same collection can have different fields, though this flexibility requires different application design patterns than relational databases.","source":"https://www.mongodb.com/docs/manual/introduction/","question":"What are the main differences between MongoDB and traditional relational databases?","confidence":0.93},{"answer":"Yes, MongoDB is a unified platform that combines operational data, vectors, and streaming in a single system. It includes vector search for semantic queries and AI-powered applications, stream processing via Apache Kafka integration using familiar MongoDB syntax, and real-time analytics with aggregation pipelines. This consolidation of multiple workload types can be more efficient than managing separate specialized databases.","source":"https://www.mongodb.com","question":"Can MongoDB handle real-time analytics, vector search, and streaming data?","confidence":0.91}]` |
| deployment.options | `{"cloud":true,"hybrid":true,"on_prem":true,"self_hosted":true}` | `{"cloud":true,"hybrid":true,"on_prem":true,"self_hosted":true}` |
| description.long | A free distributed database system that automatically distributes data across machines and data centers, providing resilience against node and data center failures. | MongoDB is a fully managed cloud database that uses flexible document-based storage and supports complex queries, analytics, and advanced search capabilities including vector and full-text search functionality. |
| features.capabilities | `{"schema":"enforced","hosting":"both","data_model":"wide_column","consistency":"tunable","replication":"leaderless","sql_support":true,"multi_region":true,"partitioning":"automatic","transactions":"single_item","license_class":"permissive","managed_cloud":true,"query_language":"cql","full_text_search":true,"secondary_indexes":"yes","horizontal_scaling":true}` | `{"schema":"schemaless","hosting":"both","data_model":"document","ttl_expiry":true,"consistency":"tunable","replication":"primary_secondary","sql_support":true,"multi_region":true,"partitioning":"automatic","transactions":"multi_item_acid","license_class":"source_available","managed_cloud":true,"vector_search":true,"change_streams":true,"query_language":"mql","full_text_search":true,"acid_transactions":true,"secondary_indexes":"yes","horizontal_scaling":true}` |
| integrations.count | 17 | 6 |
| integrations.list | `[{"name":"Amazon Keyspaces"},{"name":"Azure Cosmos DB"},{"name":"Azure Managed Instance for Apache Cassandra"},{"name":"DataStax Astra"},{"name":"Elassandra"},{"name":"Instaclustr"},{"name":"Docker"},{"name":"DataStax Studio"},{"name":"AxonOps"},{"name":"Cassandra Lucene Index"},{"name":"Elasticsearch"},{"name":"Prometheus"},{"name":"DbVisualizer"},{"name":"Apache Ignite"},{"name":"Ansible"},{"name":"Lagom"},{"name":"EmoDB"},{"name":"FiloDB"},{"name":"CQLAI"},{"name":"DBeaver","native":false,"category":"tools"},{"name":"Apache NiFi","native":false},{"name":"JanusGraph","native":false,"category":"graph"},{"name":"Stargate","native":true,"category":"api","direction":"inbound"},{"name":"K8ssandra","native":true,"category":"kubernetes"},{"name":"Cassandra Index","native":true,"category":"search"},{"name":"Lenses","native":false}]` | `[{"name":"Vertex AI"},{"name":"BigQuery"},{"name":"Datastream"},{"name":"Google Kubernetes Engine"},{"name":"Looker"},{"name":"Apigee"},{"name":"Apache Kafka"},{"name":"Google Vertex AI","native":true,"category":"ai","direction":"bidirectional"},{"name":"Google Cloud BigQuery","native":true,"category":"analytics","direction":"bidirectional"},{"name":"Google Cloud Datastream","native":true,"category":"data_integration","direction":"inbound"},{"name":"Google Cloud Functions","native":true,"category":"compute"},{"name":"Kubernetes","native":true,"category":"orchestration"}]` |
| language.primary | Java | C++ |
| license.spdx | Apache-2.0 | SSPL-1.0 |
| market.availability | - | `{"primaryMarkets":[],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"cli":true}` | `{"cli":true,"mac":true,"web":true,"linux":true,"windows":true}` |
| pricing | `{"type":"open_source","sourceUrl":"https://cassandra.apache.org","retrievedAt":"2026-09-07T08:32:30.799Z"}` | `{"type":"hybrid","plans":[{"free":true,"name":"Free (M0)","summary":"Free forever","features":["512MB storage","32MB sort memory","100 ops/sec","shared vCPUs","replica set"],"components":[{"kind":"fixed","amount":0,"period":"month","currency":"USD"}],"description":"Fully managed free-forever tier for learning and pre-production workloads","contactSales":false,"includedLimits":{"storage":"512MB","sort_memory":"32MB","operations_per_second":"100"}},{"free":false,"name":"Flex Clusters","summary":"$8–$30/month based on usage","features":["hourly billing","monthly invoices"],"description":"Usage-based pricing for variable workloads","contactSales":false},{"free":false,"name":"Dedicated Clusters","summary":"From $56.94/month","features":["dedicated resources","auto-scaling","horizontal scaling via sharding"],"components":[{"kind":"fixed","amount":56.94,"period":"month","currency":"USD"}],"description":"High-performance dedicated infrastructure for production workloads","contactSales":false}],"addOns":[{"name":"Atlas Search and Vector Search Add-on","components":[{"kind":"fixed","amount":25,"period":"month","currency":"USD"}]},{"name":"MongoDB Search and Vector Search Add-on (Enterprise clusters)","components":[{"kind":"fixed","amount":9,"period":"month","currency":"USD"},{"kind":"fixed","amount":25,"period":"month","currency":"USD"}]},{"name":"Extended Lifecycle Support (ELS)","components":[{"kind":"fixed","amount":9,"period":"month","currency":"USD"},{"kind":"fixed","amount":25,"period":"month","currency":"USD"}]},{"name":"Atlas SQL Interface (Dedicated Cluster)"},{"name":"Atlas SQL Interface (Data Federation)","components":[{"per":{"qty":1,"unit":"TB"},"kind":"metered","amount":5,"currency":"USD"}]},{"name":"Atlas Data Federation"}],"summary":"Free tier (512MB), Flex from $8–$30/month, Dedicated from $56.94/month","currency":"USD","freeTier":true,"sourceUrl":"https://www.mongodb.com/pricing","retrievedAt":"2026-10-05T10:04:54.879Z","startingPrice":{"amount":56.94,"period":"month","currency":"USD"},"billingPeriods":["month","year"]}` |
| pricing.free_tier | yes | yes |
| pricing.model | open_source | freemium |
| pricing.price_level | free | mid |
| pricing.starting_price | - | `{"amount":56.94,"currency":"USD"}` |
| pricing.transparent | - | yes |
| release.cadence_days | - | 30 |
| reliability.sla_pct | - | 99.99 |
| reliability.status_page | - | yes |
| security.certifications | - | `[{"name":"SOC 2","status":"active"},{"name":"ISO/IEC 27001:2022","status":"active"},{"name":"ISO/IEC 27017:2015","status":"active"},{"name":"ISO/IEC 27018:2019","status":"active"},{"name":"ISO 9001:2015","status":"active"},{"name":"PCI DSS","status":"active"},{"name":"HIPAA","status":"active"},{"name":"HITRUST","status":"active"},{"name":"GDPR","status":"active"},{"name":"FedRAMP Moderate Authorized","level":"Moderate","status":"active"},{"name":"IRAP","status":"active"},{"name":"TX-RAMP","status":"active"},{"name":"TISAX","status":"active"},{"name":"CSA STAR","status":"active"}]` |
| security.disclosure_policy | - | yes |
| security.fedramp | - | yes |
| security.gdpr | - | yes |
| security.hipaa | - | yes |
| security.iso27001 | - | yes |
| security.pci | - | yes |
| security.scorecard | 4.6 | 4.8 |
| security.soc2 | - | yes |
| security.trust_center | - | https://www.mongodb.com/products/platform/trust |
| security.vulnerabilities | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=go&package_name=github.com%2Fapache%2Fcassandra&per_page=100","last_12m":0,"max_severity":null}` | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=conda&package_name=mongodb&per_page=100","last_12m":0,"max_severity":null}` |

## Capabilities (NoSQL Databases)

| Capability | Apache Cassandra | MongoDB |
|---|:--:|:--:|
| **Core** |  |  |
| Data model | Wide-column | Document |
| **Query** |  |  |
| Query language | CQL | MQL / document API |
| **Consistency** |  |  |
| Consistency | Tunable | Tunable |
| **Transactions** |  |  |
| Transactions | Single-item | Multi-item ACID |
| **Indexing** |  |  |
| Secondary indexes | Yes | Yes |
| **Scale** |  |  |
| Partitioning / sharding | Automatic | Automatic |
| Multi-region | ✓ | ✓ |
| **Replication** |  |  |
| Replication topology | Leaderless | Primary-secondary |
| **Deployment** |  |  |
| Hosting | Cloud + self-hosted | Cloud + self-hosted |
| **Schema** |  |  |
| Schema | Enforced | Schemaless |
| **Features** |  |  |
| TTL / auto-expiry | - | ✓ |
| Change streams / CDC | - | ✓ |
| Vector / search built-in | - | ✓ |
| **Licensing** |  |  |
| Licence class | Permissive OSS | Source-available (SSPL/BSL) |

*Source: vioscaleAI. Generated 2026-10-16T19:00:06.688Z. "-" = undocumented, not absent.*