KeyDB vs VoltDB
| KeyDB | VoltDB | |
|---|---|---|
| Free plan | No | Yes |
| Free trial | No | Yes |
| Paid from | — | Free |
| Open source | No | No |
| Platforms | Linux, macOS, self-hosted | api, Linux, macOS, self-hosted, Web |
| Free plan | Yes | No |
| Deployment | self-hosted | both |
| Data persistence | Yes | Yes |
| High availability | Yes | Yes |
| SQL support | No | Yes |
| Vector search | No | — |
| Supported data models | strings, lists, sets, sorted sets, hashes, bitmaps, HyperLogLogs, streams | relational, document/JSON |
Both are listed in Best In-Memory Databases. On Samsung Mobile US Press, VoltDB scores higher on our published basis.