One of the Amazon’s leadership principle that’s understood wrong

Every Amazonian know what leadership principles are and how they are applied day in and day out. Every leadership principle’s final goal is to get better at customer experience and raise bar for customer obsession.

When I talk to potential candidates/ friends about our leadership principles, Bias for Action comes up almost every time and it’s understood in a very wrong way.

Speed matters in business. Many decisions and actions are reversible and do not need extensive study. We value calculated risk taking

Many are/ were in the impression that when there is an issue/ something happens, we just fix and forget until next issue pops up and we keep on repeating. But, that is not true. Yes speed matters but, that doesn’t mean compromise on high bar or customer experience. …


Lately, the longevity of all dog breeds has been decreasing. Why is that when a German Shepherd/ Labrador lived for over 15 years have their current longevity average is at around 10? Well, when I researched (reading articles, talking to people etc…) about dogs of earlier generation, and now, I found the following.

  1. Diet
  2. Environmental Factors
  3. Irresponsible Breeding

Diet

Diet is the main reason for decrease in longevity. Most of us feed dog food (dry dog food to be precise) because it is cheap and convenient. When I was growing up back in India in the early 90s’ there isn’t any concept of dog food as such. What we eat, we used to feed the dog except for those spices. It’s a home made diet. Our dog (it’s a mutt) lived for 21 years. And how many vet visits did we have through out his entire life? May be 3–4. We used to go for jogs/ walk around farmlands. …


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Query Plan from Redshift

Overview

Redshift is a Massive Parallel Processing Columnar database storage engine offering from AWS. Users have the ability to fine tune and customize every thing to their specific use cases.

The main focus of this article is on ETL where there will be a need to join tables on composite keys. What this means irrespective of what kind of distribution strategy is used (except ALL which we cannot use for facts), there will be data distribution. How can we trick redshift not to distribute but do a composite key join with lightening fast processing.

This article touches overview of table internals but doesn’t go in depth to internal implementations. …

Harsha Vardhan Lella

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