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Tag Archives: Amazon AWS

Building Distributed Workflow Applications on Amazon with Camel

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Pipeline with SNS-SQS A workflow consist of independent tasks performed in particular sequence determined by dynamic conditions. Very often a workflow represents a business process, for example the order processing steps in a ecommerce store. Amazon Web Services offer various tools for building distributed and scalable workflow applications. One approach for building such an application is to use topics and ...

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Amazon Elastic Map Reduce to compute recommendations with Apache Mahout

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Apache Mahout is a “scalable machine learning library” which, among others, contains implementations of various single-node and distributed recommendation algorithms. In my last blog post I described how to implement an on-line recommender system processing data on a single node. What if the data is too large to fit into memory (>100M preference data points)? Then we have no choice, ...

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Amazon Free Usage Tier: Installing Tomcat 7 on an EC2 Linux instance

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Amazon Web Services offers a free usage tier for 12 months that allows developers to run anything they want in the cloud. The free tier comprises of 14 services of which the EC2 service is of most immediate interest to web developers. EC2 is a service that provides resizeable virtual computing by stopping and starting virtual instances of Windows and/or ...

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AWS EBS in 4 Steps

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When you fire up an AWS AMI, you are given a small partition of disk space that survives reboots. For example, the base Ubuntu AMI I tend to favor comes with an 8GB primary partition; however, 8GB is often not enough, especially if you’re running a database or something that requires a lot of disk space. If you poke around ...

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Why we double down on AWS and the cloud

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Blippex.org published a blog post yesterday why they moved away from AWS. In the blogpost and HN discussion we recognized a couple of important points were missing in favor of AWS or cloud services in general. Full Disclosure: We know the guys from Blippex very well as they are also from Vienna. Blippex’s blog post didn’t mention that the team ...

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Set up Continuous Deployment to Amazon OpsWorks

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This is a republished guest blog post by Edgars Lazdins. He is director at Novo IT – a Web Development Agency from Latvia. You can find his original article here. Deploying code to Amazon OpsWorks using Codeship Here, at Novo IT, we love using Amazon OpsWorks for deploying our internal projects. With OpsWorks, we can easily segregate our development environments ...

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Working with Amazon Simple Queue Service using java

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Amazon Simple Queue Service or SQS is a highly scalable hosted messaging queue provided by Amazon Webservice stack. Amazon SQS can be used to completely decouple operations of different components within the system which otherwise exchange data to  perform independent tasks. Amazon SQS also helps us in saving the data which would be lost in case the application is down ...

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Archiving data to AWS Glacier

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For archiving your data at AWS you can use AWS Glacier. This service offers cheaper storage than the S3 service but the downside is that your data won’t be accessible right away as it is with S3. It may take a few hours to restore the data but if you are using this service for real archiving purposes this shouldn’t ...

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Monitoring S3 uploads for a real time data

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If you are working on Big Data and its bleeding edge technologies like Hadoop etc., the primary thing you need is a “dataset” to work on. So, this data can be reviews, blogs, news, social media data (Twitter, Facebook etc), domain specific data, research data, forums, groups, feeds, fire hose data etc. Generally, companies reach the data vendors to fetch ...

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