What is xxHash (XXH3 64)?
XXH3 is the modern xxHash algorithm designed for very high speed and excellent distribution. XXH3 64 outputs a 64-bit (8-byte) hash value, typically rendered as a 16-character hexadecimal string. It is a non-cryptographic hash and supports optional seeding for reproducible hashing.
Key characteristics:
- Extremely fast: Optimized for performance on large inputs
- Deterministic: The same input and seed always produce the same hash
- Non-cryptographic: Not suitable for security purposes
- Good distribution: Great for hash tables and indexing
- Seeded: Optional seed to diversify hash outputs
Common uses:
- Hash tables and data structures
- File integrity checks (non-security)
- Data deduplication and chunking
- Cache keys and database indexing
- High-throughput data pipelines