How deeply does Kubernetes for Developers cover universally unique identifier?

Defines the identifier and explains its scaling rationale, but stops short of generation algorithms or implementation details.

Universally unique identifier

As explained in Kubernetes for Developers

A UUID is a 128-bit identifier designed to be generated with a very low probability of collision across clients and systems.

A universally unique identifier (UUID) is a 128-bit identifier commonly displayed as hexadecimal text. Any client, including code on a user’s device, can generate one with a very low probability of collision. section 6.4.1

UUIDs help avoid the scaling limits of incrementing primary keys. Because clients can generate identifiers independently, multiple writable database instances can create records without relying on one central sequence or insert lock. section 6.4.1

Example identifier

A UUID may look like 8fe05a6e-e65d-11ea-b0da-00155d51dc33. Use this approach when independently generated identifiers matter more than sequential, sortable values. section 6.4.1

How Kubernetes for Developers covers it

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Also explained in

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The Well-Grounded Python Developer: How the pros use Python and FlaskA universally unique identifier (UUID) is a standardized 128-bit identifier conventionally represented as a hexadecimal string and intended to be globally unique.
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Data Pipelines with Apache Airflow, Second EditionA UUID is a universally unique identifier represented as a fixed-format value intended to identify an entity with extremely low collision probability.
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100 SQL Server Mistakes and How to Avoid ThemA globally unique identifier (GUID) is a 16-byte identifier designed to be unique across a broad system scope.
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ScyllaDB in ActionA UUID is a standardized 128-bit identifier format designed to provide uniqueness across systems and commonly represented as hexadecimal characters.
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Data-Oriented Programming: Reduce software complexityA UUID is a 128-bit identifier represented in a standardized textual form and designed for practical global uniqueness.
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Just Use Postgres!A UUID is a standardized 128-bit identifier designed to be globally unique without relying on a database sequence.
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Amazon Web Services in Action, Third Edition: An in-depth guide to AWSA UUID is a standardized 128-bit identifier designed to be unique across systems and generated without centralized coordination.
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PostgreSQL Mistakes and How to Avoid ThemUUID is a 128-bit identifier data type whose values are conventionally represented as 32 hexadecimal digits separated by hyphens.
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Practical Automation with PowerShell: Effective scripting from the console to the cloudA universally unique identifier (UUID), also commonly called a GUID, is a 128-bit identifier designed to distinguish entities with an extremely low probability of collision.

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Related concepts

Objectpart of · java.lang.Object is the root class of Java’s reference-type hierarchy and defines methods inherited by Java reference types.
unique identifierkind of · A unique identifier is a value or name that distinguishes an entity or record from others within a defined scope or namespace.
structkind of · A struct is a composite data type or structure that groups related fields or values into a single unit.
Weaviateused by · Weaviate is an open-source vector database and search engine for storing, indexing, and retrieving data using vector representations.

This explainer was generated by Manning's knowledge graph from the text of Kubernetes for Developers. The section links point to the parts of the book it draws on.