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Chariot Day 2021: A Recap

Chariot Day is a longstanding company tradition where Charioteers give presentations on topics about which they are passionate. The topics may be, but don’t necessarily have to be, related to software development. I am a new Chariot member, and I was eagerly looking forward to my first Chariot Day. This year’s presentations were all over the map: From astrophotography to woodworking, from on-board automobile computer modules to sailing, and from writing a new face for a Garmin watch to the…

Rightsizing Data for Athena

Amazon Athena is a service that lets you run SQL queries against structured data files stored in S3. It takes a “divide and conquer” approach, spinning up parallel query execution engines that each examine only a portion of your data. The performance of these queries, however, depends on how you consolidate and partition your data. In this post I compare query times for a moderately large dataset, looking for the “sweet spot” between number of files and individual file size.

15 Minutes With: Keith Gregory on Building a Data Pipeline for Better Business Operations

Clickstream data – the behavior data collected from a user’s path through a website or app – is often used for business intelligence reports. It helps many companies answer questions like, ‘which of my products are people adding to their cart?’ or ‘What does our online purchase funnel look like?’ But our AWS Practice Lead, Keith Gregory, argues that this data can also be used to make business operations smoother, or introduce entirely new procedures. In this interview, Keith breaks…

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