I plan to write a series of posts about databases internals. In order to make it easily perceivable, I'll be writing a NoSQL DB from scratch in Ruby. No doubts that it's not the best fit for database development, but it's extremely readable and will help us a lot. This one will be about why may you want to have an index and what is a Hash index.
Today I gave a talk on Ruby User Group Berlin meetup, here is a recap of it in a readable format.
If you followed my 3 my previous posts - you already created your first Amazon Lambda function, made it able to write to DynamoDB and be accessible from the outside world, using API Gateway.
In this post, we will create a Lambda function which can write to the Amazon DynamoDB table. For this, we will create a table, modify existing function and set up IAM roles. Log in to your AWS account and let's get started!
This post is the second one in series about Amazon Web Services first steps howtos. I believe that traditional guides like AWS Certification preparation and Linux Academy don't give the information in proper order, so here I give it in the format and the way how I give it to my colleagues at Babbel.