* High throughput, low latency, cross process, persisted key value store. * Supports very high update rates by only replicating the latest value. * Off heap data storage, with micro second latency. * Designed to be used in Java, in a pause less, garbage free manner. * Easy to adopt and open source based on the ConcurrentHashMap. * Better utilizes your existing hardware by offering vertical scalability. * UDP support for high fan out. * TCP connectivity. * Concurrent writers on one machine using one copy in memory. * Concurrent multi-master writers across machines, with a reconciliation process. * Multiple readers with TCP and UDP replication. * Resilient writes (if a process dies, the last write is not lost.) * Entirely embedded, you don’t need any additional processes.

* 100% compatible drop-in replacement for Lua 5.1, based on LuaJIT 2.1. Simply use #!/usr/bin/tarantool instead of #!/usr/bin/lua in your script. * full support for Lua modules and a rich set of own modules, including cooperative multitasking, non-blocking I/O, access to external databases, etc * MsgPack data format and MsgPack based client-server protocol * two data engines: 100% in-memory with optional persistence and a 2-level disk-based B-tree, to use with large data sets * multiple index types: HASH, TREE, RTREE, BITSET * asynchronous master-master replication * authentication and access control * the database is just a C extension to the app server and can be turned off