Book Image

Cassandra Design Patterns - Second Edition

By : Rajanarayanan Thottuvaikkatumana
Book Image

Cassandra Design Patterns - Second Edition

By: Rajanarayanan Thottuvaikkatumana

Overview of this book

If you are new to Cassandra but well-versed in RDBMS modeling and design, then it is natural to model data in the same way in Cassandra, resulting in poorly performing applications and losing the real purpose of Cassandra. If you want to learn to make the most of Cassandra, this book is for you. This book starts with strategies to integrate Cassandra with other legacy data stores and progresses to the ways in which a migration from RDBMS to Cassandra can be accomplished. The journey continues with ideas to migrate data from cache solutions to Cassandra. With this, the stage is set and the book moves on to some of the most commonly seen problems in applications when dealing with consistency, availability, and partition tolerance guarantees. Cassandra is exceptionally good at dealing with temporal data and patterns such as the time-series pattern and log pattern, which are covered next. Many NoSQL data stores fail miserably when a huge amount of data is read for analytical purposes, but Cassandra is different in this regard. Keeping analytical needs in mind, you’ll walk through different and interesting design patterns. No theoretical discussions are complete without a good set of use cases to which the knowledge gained can be applied, so the book concludes with a set of use cases you can apply the patterns you’ve learned.
Table of Contents (15 chapters)

Summary


Continuing on the migration strategies, migration from cache to Cassandra was discussed in this chapter. Cache is good as long as it serves its purpose without any data loss or any other data integrity issues. Emphasizing on the use case of the key/value type cache, various methods of cache-to-NoSQL migration were discussed. Cassandra cannot be used as a replacement for cache when it comes to speed of data access. But when it comes to data integrity, Cassandra shines all the time with its tunable consistency feature. With continual tuning and manipulation of data with clean and well-written application code, data access can be improved a lot, and it will be much better than many other data stores.

Consistency, availability, and partition tolerance are three important guarantees that any distributed computing system should offer, even though all three of these might not be possible simultaneously. Depending on the way data is ingested into Cassandra and the way it is consumed from...