Re: Cassandra Vs. Oracle Coherence

2011-05-20 Thread Peter Lin
another product in the same area is gigaspaces. On Fri, May 20, 2011 at 1:12 PM, Milind Parikh wrote: > Other interesting flavors in a distributed cache terracotta, > gemfire.together with a complex event processing engine. like > OCEP > drives a lot of low latency, high freq tra

Re: Cassandra Vs. Oracle Coherence

2011-05-20 Thread Milind Parikh
Other interesting flavors in a distributed cache terracotta, gemfire.together with a complex event processing engine. like OCEP drives a lot of low latency, high freq trading where nano seconds matter /*** sent from my android...please pardon occasional typos as

Re: Cassandra Vs. Oracle Coherence

2011-05-20 Thread Peter Lin
Although one can use Coherence as a memory cache layer on top of a DB, many customer use it in the financial sector as a in-memory key/value store. Think of transient data that doesn't need to be saved, but needs to scale out across hundreds or thousands of nodes. memcached is making progress, bu

Re: Cassandra Vs. Oracle Coherence

2011-05-20 Thread mcasandra
Coherence is similar to memcachd (free). It's in memory cache layer on top of the DB. You as a user need to keep that cache in sync with the DB. -- View this message in context: http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Cassandra-Vs-Oracle-Coherence-tp6375561p6386847.html S

Re: Cassandra Vs. Oracle Coherence

2011-05-20 Thread Jeffrey Kesselman
AH, I stand corrected. Hard to follow Larry's acquisitions without a scorecard. On 5/20/11, Peter Lin wrote: > That's completely wrong. > > TimesTen and Coherence are 2 separate products sold by Oracle. > Coherence is a data grid that takes a key/value approach. It is > massively scalable across

Re: Cassandra Vs. Oracle Coherence

2011-05-20 Thread Peter Lin
That's completely wrong. TimesTen and Coherence are 2 separate products sold by Oracle. Coherence is a data grid that takes a key/value approach. It is massively scalable across LAN and WAN. In terms of comparing Cassandra and Coherence, I wouldn't. Coherence is a data grid and most often used as

Re: Cassandra Vs. Oracle Coherence

2011-05-20 Thread Jeffrey Kesselman
I believe coherence is their name for the TimesTen technology they bought. TT is an in memory SQL database that can run as a cache for Oracle. Its totally different from Cassandra. On the one hand it supports trad SQL whereas Cassandra does not. On the other hand Cassandra is truly distribute

Re: Cassandra Vs. Oracle Coherence

2011-05-19 Thread aaron morton
I've not used Coherence, all I know if from reading the first paragraph here http://www.oracle.com/technetwork/middleware/coherence/overview/index.html and wikipedia:) Cassandra is not a caching layer, it's a database. You can rely on it as your database, and some people find when they do they