AWS imposes limits on the number of Elastic LoadBalancers. Before asking for a limit increase, it is worthwhile to check if your load balancers are actually used and have healthy instances. Using excellent boto framework for Python, I built a simple script to find all ELBs where there is an instance in OutOfService state or … Continue reading Finding Unused Elastic Load Balancers
Tag: aws
Where AWS Elastic BeanStalk Could be Better
Amazon describes their AWS Elastic BeanStalk service as follows: AWS Elastic Beanstalk is an easy-to-use service for deploying and scaling web applications and services developed with Java, .NET, PHP, Node.js, Python, Ruby, Go, and Docker on familiar servers such as Apache, Nginx, Passenger, and IIS. You can simply upload your code and Elastic Beanstalk automatically … Continue reading Where AWS Elastic BeanStalk Could be Better
Trying to Replace Cassandra with DynamoDB ? Not so fast
In November last year I pointed out how tempted I was to replace Cassandra with DynamoDB. Since then I have done some research and things are not as straightforward as they may seem at first. I'd like to revisit my post and clarify a few things. On elasticity of Cassandra I said the following: Scaling … Continue reading Trying to Replace Cassandra with DynamoDB ? Not so fast
Why I am Tempted to Replace Cassandra With DynamoDB
I have written about Cassandra in the past. I have been using Cassandra actively for the past three years, and I am one of the big advocates of technology out there. However, as I have pointed in this blog and on my Twitter page - if you plan on scaling Cassandra out, be prepared to … Continue reading Why I am Tempted to Replace Cassandra With DynamoDB
Infrastructure in the cloud vs on-premise
I made a comment on twitter saying that if you are still operating an on-premise data center in the second decade of the 21st century you are wasting a ton of money. I was talking specifically about AWS vs on-premise. I got some pushback on that assertion in the form of private messages. Here is the … Continue reading Infrastructure in the cloud vs on-premise
Cassandra: a key puzzle piece in a design for failure
When building out a data center in the cloud (AWS in particular) Cassandra can play a crucial role in the design for failure. SQL and NoSQL databases have drastically different redundancy profiles: A NoSQL database (and I hate the term NoSQL with the passion of a billion white hot suns) trades off data consistency for … Continue reading Cassandra: a key puzzle piece in a design for failure
The Dulin Report 
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