📌 If you need modern security, skip both and use SHA-256 or BLAKE3 .
You need a unique identifier for a file where speed is secondary to a widely recognized format. xxhash vs md5
xxHash is a non-cryptographic hash algorithm created by Yann Collet (the mind behind Zstandard compression). It was built with one goal in mind: to be as fast as RAM limits allow. Available in 32, 64, and 128-bit (XXH3) versions. 📌 If you need modern security, skip both
If you are scanning thousands of files to see which ones have changed, xxHash is the clear winner. It was built with one goal in mind:
import xxhash import hashlib
Use MD5 only if you don't care about attackers (checksums for downloads). Use xxHash only if you control the environment (internal databases).
if you need fast checksums, hash tables, or data deduplication.