Re: multi datacenter cluster, without fibre speeds

2011-11-14 Thread M Vieira
Thanks for your feedback Kolar. Well to be honest I was thinking of using that connection in production, not for a backup node. My Cassandra deployment works just like an expensive file caching and replication - I mean, all I use it for is to replicate some 5million files of 2M each across few

Re: multi datacenter cluster, without fibre speeds

2011-11-14 Thread Radim Kolar
Well to be honest I was thinking of using that connection in production, not for a backup node. For productions. there are several problems. Added network latency which is inconsistent and vary greatly during day, sometimes you will face network lags which will break cluster for a while

Re: multi datacenter cluster, without fibre speeds

2011-11-14 Thread M Vieira
Broadband here is fairly stable, to be honest don't remember last time I had problems such as larger than expected latency or downtime - ISP Bethere /UK My application can cope fine with up to 10 min lag (data freshness), however taking your input into consideration I agree with you, so don't

multi datacenter cluster, without fibre speeds

2011-11-11 Thread M Vieira
Has anyone experimented running cassandra clusters in geographicly separated locations connected thru ordinary broadband? By ordinary broadband I mean 30Mbps or 50Mbps Thanks Marco

Re: multi datacenter cluster, without fibre speeds

2011-11-11 Thread Radim Kolar
Dne 11.11.2011 19:14, M Vieira napsal(a): Has anyone experimented running cassandra clusters in geographicly separated locations connected thru ordinary broadband? By ordinary broadband I mean 30Mbps or 50Mbps for backup purposes, like place 1 replica on remote location over WAN?? yes. it