eXtremeDB vs LMDB
eXtremeDB
mcobject.comLMDB
symas.comSide by side
| Figure | eXtremeDB | LMDB |
|---|---|---|
| Price from | — | — |
| Free plan | — | — |
| Free trial | Yes | — |
| Open source | — | — |
| Web | — | Yes |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| iOS | Yes | — |
| Android | Yes | — |
| API | Yes | — |
| Self-hosted | Yes | Yes |
| Plans published | 1 | 2 |
| Spec score · Embedded Databases | 8.0 (#10) | 7.5 (#22) |
| Headquarters | Federal Way, Washington, USA | Grand Junction, Colorado, USA |
| Purpose | eXtremeDB is an in-memory database system designed for embedded devices and applications. | LMDB is an ultra-fast, ultra-compact, crash-proof key-value embedded data store developed for the OpenLDAP Project. |
| 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. | Symas offers fixed-price Gold or Enterprise source-level support and porting or professional services for LMDB users. |
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.