Amazon ECS : My first AWS container - Part 2

In the previous post we created a container image for our code and pushed the image onto ECR. In this post, we will setup an ECS application

Amazon ECS : My first AWS container - Part 1

I had done a post sometime back on Container basics and AWS. Here I will explore ECS - another Container offering from AWS

Dynamo Db - locks continued

In the last post I used optimistic locking with the Version attribute provided by DynamoDBMapper. Here I am going to look at the pessimistic locking method

Dynamo Db - locks

When I studies Databases in college, we learnt the concept of locks

A database lock is used to “lock” some data in a database so that only one 
database user/session may update that particular data. So, database locks 
exist to prevent two or more database users from updating the same exact 
piece of data at the same exact time.

The idea was to achieve transactional isolation. Or two operations operating on the same record did not have any side effects on the other.

Dynamo Db - Good To Remember stuff

Post is a collection of interesting pointers on the working of Dynamo Db. I wanted to have them in a single place as a ready reference