AWS EMR (Elastic MapReduce) – Introduction

Amazon EMR or AWS EMR is a managed cluster platform that simplifies running big data frameworks, such as Apache Hadoop and Apache Spark, on AWS to process and analyze vast amounts of data. Architecture: EMR cluster refers to a group of AWS EC2 instances built on AWS ami. Each instance in the cluster is called a node. Each node … Continue reading AWS EMR (Elastic MapReduce) – Introduction

AWS Certified Solutions Architect – Associate exam feedback

In this post I'm going to share my feedback on AWS Certified Solutions Architect Associate exam, preparation strategy and the exam tips. I passed all 3 AWS certifications in recent months and I took them in the order of CSA first, followed by Developer associate and finally Sysops Associate. You can find my feedback on … Continue reading AWS Certified Solutions Architect – Associate exam feedback

AWS Certified SysOps Administrator – Associate exam feedback

  I passed AWS Certified SysOps Administrator exam last week, thus completing the trifecta of AWS associate certifications. I took AWS Solutions Architect associate 3 months back, Developer associate 2 months back which really helped me in increasing my expertise in AWS and my confidence, which is key for this certification. As expected, Sysops is … Continue reading AWS Certified SysOps Administrator – Associate exam feedback

S3 – Versioning

Versioning is a method of keeping multiple modifications/versions of an object in the same bucket. You can use versioning to preserve, retrieve, and restore every version of every object stored in your Amazon S3 bucket. With versioning, you can easily recover from both unintended user actions, accidental deletes and application failures. How Versioning works: In … Continue reading S3 – Versioning

S3 – Encryption

Encryption on any system requires three components: (1) data to encrypt (2) a method to encrypt the data using a cryptographic algorithm(AES) (3) encryption keys to be used in conjunction with the data and the algorithm.   S3 supports encryption of data in transit and at rest. The data at transit will be encrypted using SSL. … Continue reading S3 – Encryption