ELB : Some common questions

Q: Is a straight through reverse proxy possible with ELB? For example, a Wordpress instance that lives at my domain.com/blog.  Is it possible with ELB similar to apaches mod_proxy passthru functionality?

A: ELB does not support this feature.  Suggestions: Create a sub-domain like blogs.crafsy.com and have a separate DNS record + ELB for it.

Q: Is there a way to force traffic to a particular backend app server when fronted with ELB? 

A: ELB supports sticky sessions for ensuring that traffic within the same session flows to the same box.  For software release purposes, you could have a subdomain like test.craftsy.com and a separate DNS record + ELB.

Q: Can you have a zone apex in Route53 point at multiple ELB's? I assume this is so. (e.g. craftsy.com -> ELB1 (production a), ELB2 (production b)

A: Yes, if you use non-simple routing policy (weighted, latency or failover). 

Oracle OpenWorld AWS Booth Sessions

•Amazon Web Services Booth:  South Exhibition Hall; booth 415

Monday  10:15 : AWS Overview   10:45 : Running Oracle Software on AWS

    11:15 : RDS Oracle Overview     1:15 : Oracle EM on AWS (Oracle OEM team)

  2:00 : RDS Best Practices      2:45 : Oracle Linux on AWS (Oracle Linux team)

  3:30  How are Oracle customers leveraging AWS ? (App Associates)

    4:30 : Siebel on AWS (Enterprise Beacon)

Tuesday  10:15 : Running Oracle Software on AWS  10:45 : RDS Best Practices  

    11:15 : Accenture  1:15 : Oracle Database Advanced Architectures on AWS     2:00 : CRM Cloud in a Box on AWS (Loyalty Methods) 3:30 : AWS Overview  

    4:30  : PeopleSoft on AWS (DLZP Group)

 

Wednesday  10:15 : RDS Oracle for the Enterprise   10:45 : DR on AWS  

  11:15 NetApp Private Storage for AWS   1:15 : Extending your Data Center to Cloud     2:00  : AWS Overview 2:45 : Oracle EM on AWS   3:30 : Smarter Agent’s Cloud   Forklift to AWS (SmartShift)     

AWS @ Oracle OpenWorld 2013 details

Learn everything you need to run Oracle on AWS and talk to solution architects to address any questions you have: http://aws.amazon.com/oracle/

EMR : Common use cases

Here are a couple of common use cases for EMR:

1. Creating sessions from weblogs : The sequence of web pages through which

a user navigated is an example of a session. Sessionization is one of the first steps in many types of log analysis and management, such as personalized website optimization, infrastructure operation optimization, and security analytics.

One study used 150 billion log entries (~24 TB) from 1 million users and produced 1.6 billion sessions. 

2. Recommendation engine : The EMR cluster reads a history of movie ratings from multiple users regarding multiple movies. Then, it builds a co-occurrence matrix that scores the similarity of each pair of movies. Combining the matrix and each user’s movie-rating history, the engine predicts a given user’s preference on unrated movies.