# Apache Cassandra vs ScyllaDB

**Leader by Vioscale score:** ScyllaDB

| Attribute | Apache Cassandra | ScyllaDB |
|---|---|---|
| **Vioscale score** | 44.8 (40% (low)) | 55.1 (51% (medium)) |
| activity.commits_last_30d | 100 | 100 |
| adoption.dependent_repos | 0 | - |
| adoption.github_stars | 10,081 | 15,723 |
| deployment.options | `{"cloud":true,"hybrid":true,"on_prem":true,"self_hosted":true}` | `{"cloud":true,"self_hosted":true}` |
| description.long | An open-source, distributed NoSQL database that automatically scales across commodity hardware and cloud infrastructure, providing high availability and fault tolerance with no single points of failure and multi-datacenter replication support. | A NoSQL database engineered for applications requiring extreme performance at scale, delivering single-digit millisecond latency with millions of operations per second, commonly used for AI workloads, feature stores, and vector search. |
| features.capabilities | `{"schema":"enforced","hosting":"both","data_model":"wide_column","consistency":"tunable","replication":"leaderless","multi_region":true,"partitioning":"automatic","transactions":"single_item","license_class":"permissive","query_language":"cql","secondary_indexes":"yes"}` | `{"schema":"enforced","hosting":"both","data_model":"wide_column","consistency":"tunable","replication":"primary_secondary","multi_region":true,"partitioning":"automatic","vector_search":true,"query_language":"cql","secondary_indexes":"yes"}` |
| integrations.count | 19 | 4 |
| 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":"DynamoDB (Alternator API compatibility)"},{"name":"Kubernetes (ScyllaDB Operator)"},{"name":"AWS"},{"name":"GCP"}]` |
| language.primary | Java | C++ |
| license.spdx | Apache-2.0 | - |
| market.availability | - | `{"hqCountry":"IL","primaryMarkets":["US","EU"],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"cli":true,"mac":true,"linux":true,"windows":true}` | `{"web":true}` |
| pricing | `{"type":"open_source","freeTier":true,"sourceUrl":"https://cassandra.apache.org","retrievedAt":"2026-08-14T11:07:28.314Z"}` | `{"type":"subscription","plans":[{"free":false,"name":"Standard","summary":"Industry-leading performance, 2 Hour P1 support","features":["Fully managed on AWS & GCP","High-throughput low-latency","Vector Search","Auto-scaling storage & compute","SOC2, ISO certifications","99.9% uptime SLA","2 Hour P1 Support response"],"description":"Industry-leading performance for data-intensive apps","contactSales":false},{"free":false,"name":"Professional","summary":"Enterprise-grade scalability, 1 Hour P1 support, 24x7","features":["All Standard features","1 Hour P1 Support response","24x7 support","Bring Your Own Account","Multi-region active-active HA/DR","Advanced metrics and logging","Dedicated Slack channel"],"description":"Enterprise-grade scalability & support","contactSales":false},{"free":false,"name":"Premium","summary":"Premium support with 15 minute P1 response, custom deployment","features":["All Professional features","15 minutes P1 Support response","24x7 support","Bring Your Own Encryption Key","Advanced networking (Private Link)","Advanced network compression","Flexible region switching","Dedicated Technical Account Manager"],"description":"Custom security, networking & deployment","contactSales":true}],"summary":"Subscription-based cloud tiers (Standard, Professional, Premium) with usage calculator. Exact pricing not disclosed on public pages.","freeTier":false,"sourceUrl":"https://www.scylladb.com","retrievedAt":"2026-08-05T13:26:38.962Z"}` |
| pricing.free_tier | yes | no |
| pricing.model | open_source | commercial |
| pricing.price_level | free | unknown |
| pricing.transparent | - | no |
| reliability.sla_pct | - | 99.9 |
| security.disclosure_policy | - | yes |
| security.gdpr | - | yes |
| security.iso27001 | - | yes |
| security.pci | - | yes |
| security.scorecard | 4.8 | - |
| security.soc2 | - | yes |
| 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}` | - |

## Capabilities (NoSQL Databases)

| Capability | Apache Cassandra | ScyllaDB |
|---|:--:|:--:|
| **Core** |  |  |
| Data model | Wide-column | Wide-column |
| **Query** |  |  |
| Query language | CQL | CQL |
| **Consistency** |  |  |
| Consistency | Tunable | Tunable |
| **Transactions** |  |  |
| Transactions | Single-item | - |
| **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 | Enforced |
| **Features** |  |  |
| TTL / auto-expiry | - | - |
| Change streams / CDC | - | - |
| Vector / search built-in | - | ✓ |
| **Licensing** |  |  |
| Licence class | Permissive OSS | - |

*Source: Vioscale. Generated 2026-09-01T16:54:40.654Z. "-" = undocumented, not absent.*