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From Eric Hauser <ewhau...@gmail.com>
Subject Re: How reliable is cassandra?
Date Mon, 29 Mar 2010 17:55:32 GMT
Does the information is the below link about Cassandra and replication over
WAN have any merit or is it just FUD?

http://www.roadtofailure.com/2009/10/29/hbase-vs-cassandra-nosql-battle/


On Mon, Mar 29, 2010 at 1:51 PM, Jonathan Ellis <jbellis@gmail.com> wrote:

> Cassandra is an excellent choice for systems that Can't Lose Data.
>
>  - real single-server durability (set CommitLogSync to "batch"), not
> just "hope it replicates somewhere before you lose power"
>  - best multi-DC replication anywhere
>  - immutable data files mean it's very difficult to introduce corruption
> bugs
>  - SnapshotBeforeCompaction option allows taking a snapshot of all
> your data files before replacing them with newer ones, so you can roll
> back to just before any compaction (as long as you have enough disk
> space to hold the snapshots of course)
>
> -Jonathan
>
> On Mon, Mar 29, 2010 at 12:31 PM, Matthew Stump <mrevilgnome@gmail.com>
> wrote:
> > Am I crazy to want to switch our server's primary data store from
> postgres to cassandra?  This is a system used by banks and governments to
> store crypto keys which absolutely can not be lost.
>

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