Amazon RDS: Is it possible to have more than 5 read replicas?

Automatically add replicas?
February 23, 2011 09:01:04 AM
Hi I will have a read heavy database and am looking for a way to automatically scale up by adding members to the replica set(s) if I start to get too many queries. Any advice on how to accomplish this? Writing my own scripts? Using some…

Very slow replicas, can't keep up
November 19, 2010 08:37:56 PM
We have a replica set of 4 identical machines. We distribute some read queries to two of the replicas but we leave the 3rd one untouched. None of the replicas is able to keep up. They saturate the disk (mostly reading) and sync very slow. The…

Consistency across replicas?
September 16, 2010 10:50:52 PM
OK -- I've read and believe that MongoDB durability comes about through replication rather than the traditional append-only logs, at least until version 1.8. So let's say that my most critical data is on a master and fully replicated onto three…

Shards and replicas
April 14, 2011 06:54:35 AM
Well, I am probably looking a bit dumb asking this. But anyways here it goes. The first time ever I came by the names shards and replicas was when I started looking into new search engines for my web applications and ended up here with ES. I…

Selectively index replicas
November 4, 2010 04:14:40 PM
Is it possible to have some indexes only on some replicas in a replica set? This would speed up writes on master (no indexes), while still having good read performance (with indexes).

Unable to use Java API against replicas
September 23, 2010 12:09:37 PM
I have a master and 2 replicas - any find access to the replicas results in Exception in thread "main" com.mongodb.MongoInternalException: couldn't get next element at com.mongodb.DBCursor.hasNext(DBCursor.java:400) at…

pymongo freezing replicas doesn't work
March 11, 2011 08:06:19 AM
I thought that all command on the database could be called from pymongo, but when i try to freeze a member in order to do a rolling repair i get the following error message: con.admin.command('replSetFreeze', 120) File…

mongo-csharp-driver with replicas
November 9, 2010 09:29:00 AM
Hi Robert, When do you plan to release c# driver that supports calls to replicas like what Steve Wagner is implementing? Thanks,

Amazon AMI guidance
February 1, 2011 11:11:57 AM
It is my intention to get CouchDB working in the Amazon EC2 environment. I have had a few problems. I first tried the Amazon Linux, which is CentOS 5.5. I got to a point where I didn't know where to go and google did not help. So I decided to…

Puppetmaster/Amazon EC2/DNS
February 23, 2011 03:08:44 AM
Hi, I'm using Amazon EC2 and I'm planning to use puppet to deploy automatically my instances, however, I have an issue I can't rely think through. As most people advised, I used a DNS server (bind to be precise) so that my instances can register…

recovering a failed node does not seem to recover replicas
August 19, 2010 05:10:44 PM
following the failure handling process described here: http://wiki.apache.org/cassandra/Operations i don't at the end seem to have all the data... i have half as much being reported by nodetool ring as i started with. i'm guessing the replicas …

question about replicas & dynamic response to load
March 3, 2011 12:00:23 PM
Hello, In our project our usage pattern is likely to be quite variable -- high for a a few days, then lower, etc could vary as much (or more) as 10x from peak to "non-peak". Also, much of our data is immutable -- but there is a considerable amount…

Closed: (DIRSERVER-1098) New replicas may never be synchronised
May 31, 2010 04:26:38 AM
[ https://issues.apache.org/jira/browse/DIRSERVER-1098?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Kiran Ayyagari closed DIRSERVER-1098.

Signing Amazon SDB requests
April 27, 2011 05:28:52 PM
I am looking for some advice on the recommended way of achieving the following. I need to sign Amazon Simple Database (SDB) queries with our Amazon Web Services credentials before forwarding them to upstream Amazon's SDB servers. The proxying…

Voldemort performance on Amazon EC2
September 1, 2010 07:53:58 AM
Hi, We've been testing a 4 node cluster, with the following configuration on each of the 6 stores we manage: <replication-factor>1</replication-factor> <required-reads>1</required-reads>…

Job opportunity: memcache @ Amazon
October 6, 2010 03:52:43 AM
If you're interested in large scale systems and memcache then drop me an email. My team is responsible for Amazon's personalization tech (recommender systems and behavioral data collection) for Amazon's owned and operated properties and we're…

amazon sqs route shutting down?
March 2, 2011 10:20:38 AM
I want to define a route to poll from an amazon SQS queue. val context = new DefaultCamelContext(reg) context.setHandleFault(true) context.addRoutes(new RouteBuilder{ override def configure(){…

Building a box on Amazon Web Services
March 31, 2011 07:55:58 PM
http://www.mongodb.org/display/DOCS/Building+for+Linux Sorry - but I've launched an AWS free usage tier. I went ahead and built an AMAZON-Linux 64 bit instance. I did the the checkouts following the fedora rules (yum yum yum) Then I ran the…

Created: (HDFS-1480) All replicas for a block end up in same rack
October 26, 2010 06:51:03 PM
All replicas for a block end up in same rack