Hash-Based IDs vs Sequential IDs

Developers should use hash-based IDs when building systems that require secure, non-guessable identifiers, such as in APIs, user sessions, or distributed databases, to mitigate risks like ID enumeration and data leakage 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-Based IDs

Nice Pick

Developers should use hash-based IDs when building systems that require secure, non-guessable identifiers, such as in APIs, user sessions, or distributed databases, to mitigate risks like ID enumeration and data leakage

Pros

• They are particularly valuable in microservices architectures or when generating public-facing resource IDs (e
• Related to: cryptographic-hashing, uuid

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-Based IDs if: You want they are particularly valuable in microservices architectures or when generating public-facing resource ids (e 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-Based IDs offers.

The Bottom Line

Hash-Based IDs wins

Developers should use hash-based IDs when building systems that require secure, non-guessable identifiers, such as in APIs, user sessions, or distributed databases, to mitigate risks like ID enumeration and data leakage