Double the Performance of Your App When Using GUIDUUID Primary Keys in ...

A walkthrough of performance considerations when using GUID/UUIDs for database Primary Keys , including code optimizations and benchmarks.

Double the Performance of Your App When Using GUID/UUID Primary Keys in SQL When designing a database, choosing the right primary key is crucial for the efficiency and scalability of your application. One popular choice among developers is the use of GUIDs (Globally Unique Identifiers) or UUIDs (Universally Unique Identifiers) as primary keys .
How We Doubled the Performance of Our App When Using GUIDUUID Primary ...

A walkthrough of performance considerations when using GUID/UUIDs for database Primary Keys , including code optimizations and benchmarks.
The switch to using GUID/UUID primary keys had a significant impact on our app's performance—so much so that we saw a performance boost of nearly 2x. Here's how we did it and why it worked.

Optimizing GUIDUUID Primary Keys for Performance
Discover how to optimize your database performance using GUID/UUID primary keys . This in-depth guide explores best practices, case studies..
One of the first schema decisions you face when designing a database table is: Should I use an INT or a UUID as the primary key ? Most developers default to an auto-incrementing integer. It's simple, compact, and familiar. But UUIDs (a.k.a. GUIDs ) are increasingly popular — and many of the old performance objections don't hold up with modern hardware. Let's break this down like ...

UUID as a Primary Key in Databases
NoSQL databases: When using databases optimized for horizontal scaling, such as MongoDB or Cassandra, UUIDs are often preferred. Security-sensitive applications: When security concerns require that primary keys be obfuscated or non-predictable. When to Avoid UUID as a Primary Key While UUIDs have their advantages, they are not always the best ...
Should you use UUIDs as database primary keys ? The performance trade-offs, why v7 changed the answer, and when to stick with auto-increment.

How UUIDs Affect Indexing, Performance, and Query Speed With Real ...
You've probably used UUIDs as primary keys in your database tables. They're unique, safe, and easy to generate. But here's the truth — they can slow things down in ways most developers don't realize until their app scales.






This guide covers indexing strategies, fragmentation issues, database-specific considerations and practical optimization techniques. Quick recommendation: For database primary keys , prefer GUID / UUID v7 (time-ordered) over GUID / UUID v4 (random) to minimize index fragmentation and improve insert performance in B-tree indexes.