Auto-increment primary key: The database automatically generates a unique increasing number as the primary key, usually implemented using an auto-increment column, suitable for most situations.
UUID: Ensure global uniqueness by using Universally Unique Identifier as the primary key.
Snowflake algorithm: A distributed ID generation algorithm open-sourced by Twitter, ensuring uniqueness and order by generating 64-bit IDs.
GUID: Globally Unique Identifier, similar to UUID, used for generating unique identifiers.
Database sequences: Objects provided by a database that can be used to generate unique incrementing numbers.
Distributed ID generator: Use a distributed ID generator to create globally unique IDs, ensuring uniqueness in distributed systems.
