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perf: Replace internal SHA256 hashing with xxhash for 4-6x performance improvement (#676)

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* perf(internal): Use FastHash for internal hashing
docs: Add xxhash performance improvement to changelog entry
feat(hash): Add fast non-cryptographic hash function

Signed-off-by: Jason Cameron <git@jasoncameron.dev>

* test(hash): add xxhash benchmarks and collision tests

Signed-off-by: Jason Cameron <git@jasoncameron.dev>

* Update metadata

check-spelling run (pull_request) for json/hash

Signed-off-by: check-spelling-bot <check-spelling-bot@users.noreply.github.com>
on-behalf-of: @check-spelling <check-spelling-bot@check-spelling.dev>

---------

Signed-off-by: Jason Cameron <git@jasoncameron.dev>
Signed-off-by: check-spelling-bot <check-spelling-bot@users.noreply.github.com>
This commit is contained in:
Jason Cameron 2025-06-16 22:53:53 -04:00 • committed by GitHub
parent 3437e575d4
commit e2b46fc5e7
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11 changed files with 291 additions and 16 deletions
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lib/policy/celchecker.go
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@ -63,7 +63,7 @@ func NewCELChecker(cfg *config.ExpressionOrList) (*CELChecker, error) {
}
func (cc *CELChecker) Hash() string {
return internal.SHA256sum(cc.src)
return internal.FastHash(cc.src)
}
func (cc *CELChecker) Check(r *http.Request) (bool, error) {