SSDB
A fast NoSQL database, an alternative to Redis
...Designed to store collection data. Persistent key-value, key-zset, key-map('hashmap'), key-list storage. Redis clients are supported. Client API supports including C++, PHP, Python, Cpy, Java, nodejs, Ruby, Go(see all). Persistent queue service. Replication(master-slave), load balance. GUI administration tool(phpssdbadmin). Built-in CLI nagios self-checks. Benchmarks are taken by ssdb-bench(SSDB) and redis-benchmark(Redis). SSDB is licensed under New BSD License, a very flexible license to use. Drag the static libraies files into your iOS project. ...