🍒 11649 - Improve performance of regexps in IAST and query obfuscator#11710
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manuel-alvarez-alvarez merged 1 commit intoJun 25, 2026
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SummaryFound 0 performance improvements and 0 performance regressions! Performance is the same for 9 metrics, 6 unstable metrics. See unchanged results
Request duration reports for reportsgantt
title reports - request duration [CI 0.99] : candidate=None, baseline=None
dateFormat X
axisFormat %s
section baseline
noprobe (348.695 µs) : 297, 400
. : milestone, 349,
basic (300.378 µs) : 293, 308
. : milestone, 300,
loop (8.99 ms) : 8984, 8996
. : milestone, 8990,
section candidate
noprobe (329.055 µs) : 305, 353
. : milestone, 329,
basic (296.782 µs) : 290, 303
. : milestone, 297,
loop (8.995 ms) : 8990, 9000
. : milestone, 8995,
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Migrate the IAST evidence-redaction regexps to RE2/J for linear-time matching. RE2/J has no back-references, so the SQL tokenizer is reworked to find Postgres dollar-quoted literals via a precomputed tag index (binary search) and to enumerate Oracle q'...' delimiters explicitly instead of relying on a back-reference. Configured redaction patterns that are valid under java.util.regex but unsupported by RE2/J fall back to the defaults instead of failing to compile. Replace the query obfuscator's `while (matcher.find())` + per-match `Strings.replace` loop (O(N*Q)) with a single appendReplacement / appendTail pass (O(Q)). Add JUnit 5 tests for the tokenizers and the obfuscator, a tokenizer JMH benchmark, and migrate SensitiveHandlerTest from Groovy to JUnit 5. Co-Authored-By: Claude Opus 4.8 (1M context) <[email protected]> (cherry picked from commit 92ebc2a)
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Re-applying the original approval to the backport PR.
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Backport #11649 to release/v1.63.x