Book Image

AWS Certified Machine Learning Specialty: MLS-C01 Certification Guide

By : Somanath Nanda, Weslley Moura
Book Image

AWS Certified Machine Learning Specialty: MLS-C01 Certification Guide

By: Somanath Nanda, Weslley Moura

Overview of this book

The AWS Certified Machine Learning Specialty exam tests your competency to perform machine learning (ML) on AWS infrastructure. This book covers the entire exam syllabus using practical examples to help you with your real-world machine learning projects on AWS. Starting with an introduction to machine learning on AWS, you'll learn the fundamentals of machine learning and explore important AWS services for artificial intelligence (AI). You'll then see how to prepare data for machine learning and discover a wide variety of techniques for data manipulation and transformation for different types of variables. The book also shows you how to handle missing data and outliers and takes you through various machine learning tasks such as classification, regression, clustering, forecasting, anomaly detection, text mining, and image processing, along with the specific ML algorithms you need to know to pass the exam. Finally, you'll explore model evaluation, optimization, and deployment and get to grips with deploying models in a production environment and monitoring them. By the end of this book, you'll have gained knowledge of the key challenges in machine learning and the solutions that AWS has released for each of them, along with the tools, methods, and techniques commonly used in each domain of AWS ML.
Table of Contents (14 chapters)
Section 1: Introduction to Machine Learning
Section 2: Data Engineering and Exploratory Data Analysis
Section 3: Data Modeling

Managing failover in Amazon RDS

RDS instances can be single-AZ or multi-AZ. In multi-AZ, multiple instances work together, similar to an active-passive failover design.

For a single-AZ RDS instance, storage can be allocated for that instance to use. In a nutshell, a single-AZ RDS instance has one attached block store (EBS storage) available in the same availability zone. This makes the databases and the storage of the RDS instance vulnerable to availability zone failure. The storage allocated to the block storage can be SSD (gp2 or io1) or magnetic. To secure the RDS instance, it is advised to use a security group and provide access based on requirements.

Multi-AZ is always the best way to design the architecture to avoid any failure and keep the applications highly available. With multi-AZ features, a standby replica is kept in sync synchronously with the primary instance. The standby instance has its own storage in the assigned availability zone. A standby replica cannot...