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dex: Avoid unnecessary allocations during history replay - #7136
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nscuro merged 1 commit intoAug 27, 2026
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Stops converting the timestamp of every event from Proto `Timestamp` to Java `Instant` during replay. Only convert lazily when the timestamp is requested in workflow code. Stops allocating new `RetryPolicy` objects for `RetryPolicy#ofDefault`. Gets called for every activity invocation, including during history replay. Use a constant instead. Note these are not big memory hogs, they're just unnecessary and avoidable waste. Signed-off-by: nscuro <nscuro@protonmail.com>
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Up to standards ✅🟢 Issues
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| Metric | Results |
|---|---|
| Complexity | -4 |
🟢 Coverage 100.00% diff coverage · 0.00% coverage variation
Metric Results Coverage variation ✅ 0.00% coverage variation (-1.00%) Diff coverage ✅ 100.00% diff coverage (70.00%) Coverage variation details
Coverable lines Covered lines Coverage Common ancestor commit (501627d) 44317 38684 87.29% Head commit (bb3cd5c) 44319 (+2) 38684 (+0) 87.29% (0.00%) Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch:
<coverage of head commit> - <coverage of common ancestor commit>Diff coverage details
Coverable lines Covered lines Diff coverage Pull request (#7136) 5 5 100.00% Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified:
<covered lines added or modified>/<coverable lines added or modified> * 100%
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Description
dex: Avoid unnecessary allocations during history replay.
Stops converting the timestamp of every event from Proto
Timestampto JavaInstantduring replay. Only convert lazily when the timestamp is requested in workflow code.Stops allocating new
RetryPolicyobjects forRetryPolicy#ofDefault. Gets called for every activity invocation, including during history replay. Use a constant instead.Note these are not big memory hogs, they're just unnecessary and avoidable waste.
Addressed Issue
N/A
Additional Details
N/A
Checklist
This PR fixes a defect, and I have provided tests to verify that the fix is effectiveThis PR introduces changes to the database model, and I have updated the migration changelog accordinglyThis PR introduces new or alters existing behavior, and I have updated the documentation accordinglyThis PR is a substantial change (per the ADR criteria), and I have added an ADR underdocs/adr/