云上部署PostgreSQL入门：简化数据库服务

PostgreSQL

Cloud

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xvii

Acknowledgments

From Baji Shaik: I have many people to thank, as without them, this book

would not have been possible. Thanks to Apress Media for believing in

this book and providing us this opportunity. Thanks to Sanchita Mandal

for referring us to this book. Thanks to Avinash Vallarapu for being a

wonderful co-author. Thanks to Nikhil Karkal and Divya Modi for working

with us and giving us extended time in busy schedules. Thanks to my

Guru, Dinesh Kumar. Thanks to Jobin Augustine for reviewing the book.

And thanks to my loving parents—Lalu Saheb Shaik and Nasar Bee—

because of them, I am who I am today.

From Avinash Vallarapu: A special thanks to Apress Media for believing

in me and giving me the great opportunity to write this book. Nikhil Karkal

and Divya Modi from Apress have been very helpful in making the process

very seamless for the authors. I want to thank Baji for collaborating with

me and introducing me as an author. I want to thank my wife Samhitha

Garudadri for all her support during the days of writing this book.

Thanks to my dad, Srinivas Vallarapu, and mom, Padmavathi, for all the

encouragement. The technical discussions I had with my wife and my

brother Rajesh Vallarapu helped me a lot while writing this book. Many

thanks to my guru, Jobin Augustine, who also reviewed this book.

DBaaS can simplify the deployment of your development and testing

environments during the software development and testing phases.

Maintaining a production environment with a failover mechanism and

load balancing adds overhead to any organization. DBaaS can help you

meet these requirements through self-service portals that manage load

balancing and failover.

DBaaS helps deliver production and non-production database services

with an architecture that is designed for elasticity and resource pooling.

DBaaS also enables businesses to effectively use their resources for

everyday DBA work. By consuming DBaaS, you can easily avoid the costs

and possible delays in setting up and maintaining an infrastructure. This

enables applications to be deployed to the database with no CapEx for

hardware and software, and only OpEx for the database service. Most of the

tools and automations are embedded as services by several cloud vendors.

The elasticity of DaaS services helps you avoid investing in capacity

and resources in advance. DBaaS enables you upgrade resources and

capacity as needed in the future through on-demand and self-provisioning

portals. Monitoring solutions are nearly free for managing the logical

infrastructure maintained as a service. DBaaS also avoids costs associated

with maintaining the infrastructure and training in-house expertise.

Having more visibility to the performance and diagnostic data helps you

upgrade or downsize the service and thus have rightsized resources.

Metrics collected through various solutions by the vendors are helpful in

forecasting the business. DBaaS also brings improved availability through

several monitoring solutions and high availability solutions implemented

by the vendors.

Who Should Use DBaaS?

DBaaS has no limitation on the type of business and the size or volume

of the business it can serve well. There are a number of companies using

DBaaS that manage several thousands of transactions per second and have

Chapter 1 IntroduCtIon todatabases IntheCloud

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