eXtremeDB vs KeyDB
eXtremeDB
mcobject.comKeyDB
keydb.devSide by side
| Figure | eXtremeDB | KeyDB |
|---|---|---|
| Price from | — | — |
| Free plan | — | — |
| Free trial | Yes | — |
| Open source | — | — |
| Windows | Yes | — |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| iOS | Yes | — |
| Android | Yes | — |
| API | Yes | — |
| Self-hosted | Yes | Yes |
| Plans published | 1 | 0 |
| Spec score · In-Memory Databases | 7.8 (#11) | 7.4 (#19) |
| Founded | 2001 | 2019 |
| Intended users | McObject describes eXtremeDB for HPC as intended for capital markets and other high-performance computing applications. | The maker describes KeyDB as useful from small projects to workloads serving millions of users. |
| Purpose | eXtremeDB is an in-memory database system designed for embedded devices and applications. | KeyDB is an open source, in-memory database used as a database, cache, and message broker. |
| Security | Network communications can use TLS/SSL, with support for OpenSSL and wolfSSL implementations. | KeyDB offers TLS support for client connections, replication links, and the cluster bus, and its security guidance recommends restricting access to trusted clients. |
| Support | Product support is available from McObject’s engineering team on an annual contract and includes software updates and a 50 percent discount on major upgrades. | Support is community-based and managed by the KeyDB team at Snap; the maker says paid support services are unavailable. |
Plans
In their own words
eXtremeDB
eXtremeDB is an in-memory database system designed for embedded devices and applications. It can combine in-memory and persistent storage within one database system. Interfaces include native APIs, REST, SQL, ODBC, and JDBC, with language APIs for C/C++, Java, Python, C#, Go, and Rust. For time-series data, a sequence type provides columnar storage. Distributed options include High Availability, Cluster, and Active Replication Fabric for replication across IoT tiers. Network communications can use TLS/SSL with OpenSSL or wolfSSL. Technical specifications list maximum database sizes of 4 GB on 32-bit architectures and 18.4 exabytes on 64-bit architectures. eXtremeDB supports Android, iOS, Linux, macOS, and Windows, and can be self-hosted. Evaluation downloads are listed for Linux, macOS, and Windows; custom trial packages can be requested for other platforms. McObject offers annual engineering support contracts that include software updates and a 50 percent discount on major upgrades. Commercial licensing is paid, with pricing available on request, and a 60-day trial is listed.