The value of cassandra is in its replication – as a single node solution, it’s slower and less flexible than alternatives
From: John Lammers Reply-To: "user@cassandra.apache.org" Date: Friday, January 22, 2016 at 12:57 PM To: Cassandra Mailing List Subject: Fwd: Production with Single Node Thanks for your reply Sebastian. They are specialized data storage & retrieval systems. The Cassandra database is mainly used to store meta-data for searching. Jonathan, I had seen your article. But what are some of the technical reasons why a one node Cassandra cluster is a bad idea? I need ammo to convince others. Or failing that, what can be done to make this configuration as safe & robust as possible? Thanks! --John ---------- Forwarded message ---------- From: Sebastian Estevez <sebastian.este...@datastax.com> Date: Fri, Jan 22, 2016 at 3:41 PM Subject: Fwd: Production with Single Node To: john.lamm...@karoshealth.com Hi John, Can you share a bit more about your use case? What's the purpose of these little clusters? Jon has good points but I'm cautious to dismiss your idea without hearing specifics about your plans. All the best, Sebastián Estévez Solutions Architect |954 905 8615 | sebastian.este...@datastax.com DataStax is the fastest, most scalable distributed database technology, delivering Apache Cassandra to the world’s most innovative enterprises. Datastax is built to be agile, always-on, and predictably scalable to any size. With more than 500 customers in 45 countries, DataStax is the database technology and transactional backbone of choice for the worlds most innovative companies such as Netflix, Adobe, Intuit, and eBay. ---------- Forwarded message ---------- From: Jack Krupansky <jack.krupan...@gmail.com> Date: Fri, Jan 22, 2016 at 3:30 PM Subject: Re: Production with Single Node To: user@cassandra.apache.org The risks would be about the same as with a single-node Postgres or MySQL database, except that you wouldn't have the benefit of full SQL. How much data (rows, columns), what kind of load pattern (heavy write, heavy update, heavy query), and what types of queries (primary key-only, slices, filtering, secondary indexes, etc.)? -- Jack Krupansky On Fri, Jan 22, 2016 at 3:24 PM, John Lammers <john.lamm...@karoshealth.com> wrote: After deploying a number of production systems with up to 10 Cassandra nodes each, we are looking at deploying a small, all-in-one-server system with only a single, local node (Cassandra 2.1.11). What are the risks of such a configuration? The virtual disk would be running RAID 5 and the disk controller would have a flash backed write-behind cache. What's the best way to configure Cassandra and/or respecify the hardware for an all-in-one-box solution? Thanks-in-advance! --John
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