<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Have you considered Risk? It’s a distributed erlang nosql/k/v store.<br class=""><div><blockquote type="cite" class=""><div class="">On 15. Sep 2017, at 18:43, code wiget <<a href="mailto:codewiget95@gmail.com" class="">codewiget95@gmail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><meta http-equiv="Content-Type" content="text/html charset=utf-8" class=""><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Hello everyone,<div class=""><br class=""></div><div class="">I am at the point where I have many Erlang nodes, and I am going to have to move to a distributed database. Right now, I am using a basic setup: each Erlang node has a copy of the same Redis DB, and all of those DBs are slaves(non-writable copies) of a master. A big problem with this is obvious - If the db goes down, the node goes down. If the master goes down, the slaves won’t get updated, so I would like to move to a distributed db that all of my nodes can read/write to that can not/does not go down.</div><div class=""><br class=""></div><div class="">The nodes do ~50 reads per write, and are constantly reading, so read speed and consistency is my real concern. I believe this will be the node’s main speed factor.</div><div class=""><br class=""></div><div class="">Another thing is that all of my data is key/key/value , so it would mimic the structure of ID -> name -> “Fred”, ID->age->20, so I don’t need a SQL DB.</div><div class=""><br class=""></div><div class="">A big thing also is that I don’t need disc copies, as a I have a large backup store where the values are generated from.</div><div class=""><br class=""></div><div class="">I have looked at as many options as I can -></div><div class=""><br class=""></div><div class="">Voldemort : <a href="http://project-voldemort.com/" class="">http://project-voldemort.com/</a> </div><div class="">- looks perfect, but there are 0 resources on learning how to use it outside of their docs and no Erlang driver, which is huge because I would both have to learn how to write a c driver and everything about this just to get it to work. </div><div class=""><br class=""></div><div class="">Cassandra: <a href="http://cassandra.apache.org/" class="">http://cassandra.apache.org/</a></div><div class="">- looks good too, but apparently there is a small community and apparently isn’t updated often</div><div class=""><br class=""></div><div class="">Scalaris: <a href="https://github.com/scalaris-team/scalaris/blob/master/user-dev-guide/main.pdf" class="">https://github.com/scalaris-team/scalaris/blob/master/user-dev-guide/main.pdf</a></div><div class="">- Looks very very cool, seems great, but there is 0 active community and their GitHub isn’t updated often. This is a distributed all in-memory database, written in Erlang.</div><div class=""><br class=""></div><div class=""><br class=""></div><div class="">So from my research, which consisted heavily of this blog:<a href="https://www.metabrew.com/article/anti-rdbms-a-list-of-distributed-key-value-stores" class="">https://www.metabrew.com/article/anti-rdbms-a-list-of-distributed-key-value-stores</a> , I have narrowed it down to these three.</div><div class=""><br class=""></div><div class="">BUT you are all the real experts and have built huge applications in Erlang, what do you use? What do you have experience in that performs well with Erlang nodes spread across multiple machines and possibly multiple data centers?</div><div class=""><br class=""></div><div class="">Thanks for your time.</div><div class=""><br class=""></div></div>_______________________________________________<br class="">erlang-questions mailing list<br class=""><a href="mailto:erlang-questions@erlang.org" class="">erlang-questions@erlang.org</a><br class="">http://erlang.org/mailman/listinfo/erlang-questions<br class=""></div></blockquote></div><br class=""></body></html>