Comdb2
| Comdb2 | |
|---|---|
| Original author | Comdb2 Team |
| Developers | Comdb2 team, and other open source component developers |
| Release | 1 January 2016[1] |
| Stable release | 7.0
|
| Written in | C |
| Operating system | Linux, Solaris, AIX |
| Available in | English |
| Type | RDBMS |
| License | Apache v2, BSD License, MIT License, Sleepycat License[2] |
| Website | bloomberg |
Comdb2 is an open source, highly available clustered RDBMS developed by Bloomberg LP, built on optimistic concurrency control techniques. It provides multiple isolation levels, including Snapshot and Serializable Isolation. Read/Write transactions run on any node, with the client library transparently negotiating connections to lowest cost (latency) node which is available. Comdb2 implements queues for publisher-to-subscriber message delivery. Queues can be combined with table triggers for time-consistent log distribution.
Comdb2 supports the SQLite dialect of SQL with some modifications,[3] and embeds the Lua scripting language. Comdb2 maintains a fork of Berkeley DB to provide the key–value database backend to SQLite.
Comdb2 architecture was described in detail in this 2016 technical paper.[4]
See also
References
- ^ "Comdb2". Comdb2 Website. Retrieved 2020-11-18.
- ^ "Comdb2 Licenses". Comdb2 Licenses.
- ^ "SQL language | Comdb2 Documentation". bloomberg.github.io. Retrieved 2020-11-18.
- ^ "Comdb2 - Bloomberg's Highly Available Relational Database System" (PDF). Archived from the original (PDF) on 2016-09-28.
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