The database technology landscape has been changing rapidly over the last few years. The server-based relational databases, which were so successful in solving the data-storage problem for traditional client/server and web-based applications, are no
Berkeley DB (DB)是一个高性能的,嵌入数据库编程库,和C语言,C++,Java,Perl,Python,PHP,Tcl以及其他很多语言都有绑定。Berkeley DB可以保存任意类型的键/值对,而且可以为一个键保存多个数据。Berkeley DB可以支持数千的并发线程同时操作数据库,支持最大256TB的数据,为一个很好用的KV系统
”Memcachedb is a distributed key-value storage system designed for persistent.” A complete memcached, but *NOT* a cache solution Memcached is good enough for cache. *NO* expiration For memcache protocol compatible, still reserved, but we do nothing.