Implement UUIDv7 in Amazon RDS for PostgreSQL using Trusted Language Extensions

This article explains how to implement UUIDv7 in Amazon RDS for PostgreSQL using Trusted Language Extensions (TLEs). UUIDv7 is a UUID that encodes a Unix timestamp in the first 48 bits, making it time-based and sequential, which can improve performance over the more random UUIDv4 by clustering commonly accessed data together.

Specifically, the article covers:

• An overview of the solution using TLEs and PL/Rust to create functions for generating UUIDv7s, generating UUIDv7s from a given timestamp, and extracting the timestamp from a UUIDv7
• Prerequisites for enabling TLEs and PL/Rust on an RDS PostgreSQL instance
• Installing the UUIDv7 TLE extension
• Using the UUIDv7 functions
• A deeper look at the implementation details of the UUIDv7 functions in PL/Rust
• Performance comparison between PL/pgSQL, PL/Rust, and a C implementation showing PL/Rust performs comparably to C
• Cleaning up by uninstalling the extension