Cloud

AWS Certified Database Specialty (DBS-C01)

Here is my feedback after preparing and passing the AWS Database Specialty certification. There are tips about the exam but also some thoughts that came to my mind during the preparation when I had to mind-shift from a multi-purpose database(…)

Rapid PostgreSQL cloning using AWS EBS snapshots

When you go for AWS EC2 instances to host your PostgreSQL deployments and you want to rapidly clone PostgreSQL instances for development or testing purposes you can make use of AWS EBS(…)

Using AWS Storage Gateway as a backup target for PostgreSQL

In the last post we had a quick look at AWS Kinesis data streams and how you can push data to AWS S3 using(…)

Oracle disables your multitenant option when you run on EC2

I have installed Oracle 19.6 on an EC2 for our Multitenant Workshop training. And of course, during the workshop we create a lot of PDBs. If you don't have paid for the Enterprise Edition plus the(…)

Sending PostgreSQL data to AWS S3 by using AWS Kinesis data streams

Before we really start with this post: This is just an experiment and you should not implement it like this in real life. The goal of this post is just to show what is possible and I am not saying(…)

AWS Automation – Stop a RDS instance

Introduction I created a RDS SQL Server instance on AWS. I use it for test purpose and to minimize the costs I needed to ensure that my instance is stopped automatically at the end of the working day and also(…)

DynamoDB: adding a Local covering index to reduce the cost

By Franck Pachot . This is a continuation on the previous post on DynamoDB: adding a Global Covering Index to reduce the cost. I have a DynamoDB partitioned on “MyKeyPart”,”MyKeySort” and I have many queries(…)

DynamoDB: adding a Global covering index to reduce the cost

By Franck Pachot . People often think of indexes as a way to optimize row filtering (“get item” faster and cheaper). But indexes are also about columns (“attribute projection”) like some kind of vertical partitioning. In relational (“SQL”) databases(…)

Restore S3 Object with AWSPOWERSHELL

AWS S3 offers different Storage Classes, allowing to optimize cost among others. For instance, some classes are used for archiving purposes: S3 Glacier and S3 Glacier Deep Archive. It means the(…)

Oracle 20c SQL Macros: a scalar example to join agility and performance

By Franck Pachot . Let’s say you have a PEOPLE table with FIRST_NAME and LAST_NAME and you want, in many places of your application, to display the full name. Usually my name will be displayed as ‘Franck Pachot’ and(…)