NoSQL Distilled A Brief Guide to the Emerging World of Polyglot Persistence

The book is widely praised as an excellent, concise introduction to the world of NoSQL databases. Reviewers highlight its ability to provide a high-level overview of core concepts such as aggregate data models, distribution strategies, consistency, and the CAP theorem. Many appreciate its focus on the underlying principles and historical context of NoSQL, explaining why these databases exist and what problems they aim to solve. The writing style is frequently described as clear, conversational, and easy to understand, making complex topics accessible for beginners. Despite its age, many readers find the fundamental theories and discussions on the various NoSQL types - key-value, document, column-family, and graph databases - to remain highly relevant and valuable.

While effective as an introduction, a common criticism is the book's lack of depth and real-world examples. Experienced NoSQL users often find it too basic, as it intentionally avoids getting into the nitty-gritty details of specific implementations or advanced use cases. Some reviewers wished for more practical case studies or guidance on choosing a particular database for a project, noting that the examples provided are often too short or abstract. Furthermore, certain sections of the book, particularly those discussing MapReduce or older relational database limitations, are considered dated due to advancements in technology and the evolution of cloud and microservices architectures. Some readers also found it challenging to fully grasp the concepts of column-family databases without additional external resources.

Overall, NoSQL Distilled serves its purpose as a foundational text exceptionally well. It is highly recommended for developers, engineers, or anyone new to the NoSQL landscape who needs a broad, conceptual understanding without getting bogged down in specifics. The book excels at helping readers understand the different types of NoSQL databases, their strengths, weaknesses, and when to consider using them. It equips readers with the vocabulary and framework to ask informed questions and make initial technology choices, acting as a crucial starting point before diving into more specialized literature or specific database technologies. However, those already experienced with NoSQL or seeking in-depth implementation guides should look elsewhere.