Hash IDs vs Sequential IDs

Developers should use Hash IDs when they need to expose database IDs in public interfaces like URLs or API responses without revealing the underlying sequential nature or scale of the data meets developers should use sequential ids when they need a straightforward, performant method for generating unique keys in databases, such as for primary keys in relational databases like mysql or postgresql, to facilitate fast indexing and retrieval. Here's our take.

Hash IDs

Nice Pick

Developers should use Hash IDs when they need to expose database IDs in public interfaces like URLs or API responses without revealing the underlying sequential nature or scale of the data

Pros

• Common use cases include e-commerce product pages, user profile links, or any scenario where hiding the actual database row count or preventing ID enumeration is important for security or privacy
• Related to: hashing-algorithms, url-design

Cons

• Specific tradeoffs depend on your use case

Sequential IDs

Developers should use sequential IDs when they need a straightforward, performant method for generating unique keys in databases, such as for primary keys in relational databases like MySQL or PostgreSQL, to facilitate fast indexing and retrieval

Pros

• They are ideal for scenarios where ordering by creation time is important, like in logs or transaction records, but should be avoided in distributed systems due to potential bottlenecks and scalability issues, where UUIDs or other distributed ID generation methods are preferred
• Related to: database-design, primary-keys

Cons

• Specific tradeoffs depend on your use case

The Verdict

Use Hash IDs if: You want common use cases include e-commerce product pages, user profile links, or any scenario where hiding the actual database row count or preventing id enumeration is important for security or privacy and can live with specific tradeoffs depend on your use case.

Use Sequential IDs if: You prioritize they are ideal for scenarios where ordering by creation time is important, like in logs or transaction records, but should be avoided in distributed systems due to potential bottlenecks and scalability issues, where uuids or other distributed id generation methods are preferred over what Hash IDs offers.

The Bottom Line

Hash IDs wins

Developers should use Hash IDs when they need to expose database IDs in public interfaces like URLs or API responses without revealing the underlying sequential nature or scale of the data