AWS: All content tagged as AWS in NoSQL databases and polyglot persistence
Pierre Bailet and Mathieu Poumeyrol of fotopedia (a French photo site) share their experience of operating a small MongoDB cluster since Sep.2009 compared to a MySQL cluster.
Some details about fotopedia:
- fotopedia is 100% on AWS
- Amazon RDS for MySQL
- 4 nodes MongoDB cluster
- 150mil. photo views
- no alter table
- background index creation
- data backup & restoration
- note: as far as I can tell MySQL is able to do the same
- replica sets
- hardware migration
- note: the same procedure can be used for MySQL
Before leaving you with the slides, here is an interesting accepted trade-off:
Quietly losing seconds of writes is preferable to:
- weekly minutes-long maintenance periods
- minutes-long unscheduled downtime and manual failover in case of hardware failures
The topic of running MongoDB on Amazon Web Services using Elastic Block Storage came up again among the 10 tips for running MongoDB from Engine Yard:
you should know that the performance of Amazon’s Elastic Block Storage (EBS) can be inconsistent.
Following up on that Mahesh P-Subramanya aptly added:
Indeed! I’d actually take it a step further and say Do not use EBS in any environment where reliability and/or performance characteristics of your disk-access are important. Or, to put it differently, asynchronous backups - OK, disk-based databases - Not So Much.
Interestingly though, some presentations earlier this year–MongoDB in the Amazon Cloud and Running MongoDB on the Cloud—left me, and others with the impression that EBS should not be dismissed so fast.
Original title and link: MongoDB and Amazon Elastic Block Storage (EBS) ( ©myNoSQL)
This is how things are rolling these days. Microsoft talks about offerring Hadoop integration with Project Isotop in 2012, Amazon is announcing immediate availability of new beefed instances (Cluster Compute Eight Extra Large (cc2.8xlarge)) and reduced prices for some of the existing instances.
Original title and link: Hadoop: Amazon Elastic MapReduce and Microsoft Project Isotop ( ©myNoSQL)