Linda's evalc, a (tuple)space oddity

For a change, I will start with a good soundtrack (youtube version for those who are spotify-less) This is my third article about the distributed coordination language Linda. The final target of the work is to use this coordination mechanism to deploy and maintain applications based on the description of their topology (using, for example, TOSCA as a DSL). Last time, I introduced a lisp based language (zygomys) as an embedded programing mechanism to describe the business logic.

350000 rows, 133 cols... From a huge CSV to DynamoDB (without breaking piggy-bank).

In this post I will explain how to: Parse a CSV file and extract only certain columns Create a table in DynamoDB Insert all the data with an adaptive algorithm in order to use the provisioned capacity Reduce the capacity once the insertion is done. Exploring the problem: AWS Billing In a previous post I explained how I was using dynamodb to store a lot of data about aws billing.

To go and touch Linda's Lisp

The title is not a typo nor dyslexia. I will really talk about Lisp. In a previous post I explained my will to implement the dining of the philosophers with Linda in GO. The ultimate goal is to use a distributed and abstract language to go straight from the design to the runtime of an application. The problem I’ve faced I want to use a GO implementation for the Linda language because a go binary is a container by itself.

Linda, 31yo, with 5 starving philosophers...

The hand is the tool of tools - Aristotle. It ain’t no secret to anyone actually knowing me: I am a fan of automation. Automation and configuration management have come a long way since Mark Burgess wrote the first version of cfengine. But even if the landscape has changed, operators are still scripting (only the DSL has changed), and the area targeted by those scripts remains technical.

A foot in NoSQL and a toe in big data

The more I work with AWS, the more I understand their models. This goes far beyond the technical principles of micro service. As an example I recently had an opportunity to dig a bit into the billing process. I had an explanation given by a colleague whose understanding was more advanced than mine. In his explanation, he mentioned this blog post: New price list API. Understanding the model By reading this post and this explanation, I understand that the offers are categorized in families (eg AmazonS3) and that an offer is composed of a set of products.