AWS

Introducing, DSLs to query against Amazon CloudWatch metrics

If you have done any DevOps work on Amazon Web Services (AWS) then you should be familiar with Amazon CloudWatch, a service for tracking and viewing metrics (CPU, network in/out, etc.) about the various AWS services that you consume, or better still, custom metrics that you publish about your service. On top of that, you …

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Introducing log4net.Kinesis, a log4net appender for Amazon Kinesis

Just under three weeks ago, Amazon announced the public availability of their new Kinesis service, a service which is designed to allow real-time processing of streaming big data. As an experiment I have put together a simple, actor-based customer appender for log4net which allows you to publish your log messages into a configured Kinesis stream. …

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Amazon ELB – Some caveats around health check pings

We recently found out about an interesting, undocumented behaviour of Amazon’s Elastic Load Balancing (ELB) service – that health check pings are performed by each and every instance running your ELB service at every health check interval. Intro to ELB But first, let me fill in some background information for readers who are not familiar …

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DynamoDB.SQL 1.2.1 – now supports Local Secondary Index

A couple of weeks earlier, Amazon announced support for Local Secondary Indexes (LSI) for DynamoDB. You can now perform fast, efficient queries against DynamoDB tables using attributes that are not part of the existing Hash and Range key model without resorting to the use of scans. As a result to the new feature the DynamoDB …

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DynamoDB.SQL – version 1.1.0 released

Just a quick note to say that another minor update to DynamoDB.SQL has been release, you can view the release notes here.   The latest update adds support for a TSQL style WITH keyword for specifying optional parameters for tweaking the query/scan operation. For queries, you can specify the NoConsistentRead and PageSize options to use …

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My .Net Rocks talk is available

Hi, just a quick to say that my talk with .Net Rocks is now available on their web site. In this talk I shared some insights into how F# is used in our stack to help us build the backend for our social games, specifically in the areas of: implementation of a slots engine which …

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Introduction to AWS SimpleWorkflow Extensions Part 3 – Parallelizing activities

The series so far: Hello World example Beyond Hello World   Within a workflow, not all activities have to be performed sequentially. In fact, to increase throughput and/or reduce the overall time required to finish a workflow, you might want to perform several activities in parallel provided that they don’t have any inter-dependencies and can …

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