cache_db project is an in-memory data structure project, implementing a distributed, in-memory key-value database with optional durability and scalability. It consists of auto-update trigger functionality between DB nodes.

Below modules are implemented: cache_master: Interface server which accepts request(credentials and criticality), and routes it towards cache_dbs cache_db: It accepts the request from cache_server and saves the data into DB. Based on criticality it updates other cache DBs via synchronous or asynchronous calls.

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %%%%%%%% Test Result %%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %%%%%%%%[cache1@localhost] : cache_master %%%%%%%%%%%%%%%%%%%%% %%%%%%%% [cache2@localhost, cache1@localhost] : cache_db %%%%% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

(cache1@localhost)1> c(cache_master). {ok,cache_master}

(cache1@localhost)2> cache_master:start_link(). nodes: [cache2@localhost,cache3@localhost] {ok,<0.47.0>}

(cache1@localhost)3> cache_master:test().
cache test started cache_server : msg {{john,111},critical} recieved at node : cache1@localhost cache_server : msg {{shyam,111},non_critical} recieved at node : cache1@localhost ok cache_server : msg {{ram,111},non_critical} recieved at node : cache1@localhost (cache1@localhost)4>
cache_server : sending msg [{{john,111},critical}] to Node : cache2@localhost cache_server : sending msg [{{shyam,111},non_critical}] to Node : cache2@localhost cache_server : sending msg [{{ram,111},non_critical}] to Node : cache2@localhost msg {{john,111},critical} recieved at node cache2@localhost msg {{shyam,111},non_critical} recieved at node cache2@localhost msg {{ram,111},non_critical} recieved at node cache2@localhost adding msg {john,111} at node cache2@localhost adding msg {shyam,111} at node cache2@localhost adding msg {ram,111} at node cache2@localhost syncing msg {john,111} via synchronous call from node cache2@localhost to nodes [cache3@localhost] syncing msg {shyam,111} via asynchronous call from node cache2@localhost to nodes [cache3@localhost] syncing msg {ram,111} via asynchronous call from node cache2@localhost to nodes [cache3@localhost] adding msg {john,111} at node cache3@localhost adding msg {shyam,111} at node cache3@localhost adding msg {ram,111} at node cache3@localhost