⚡ Bolt: optimize listAllRegions with lock-free pre-allocated map-reduce pattern - #46
⚡ Bolt: optimize listAllRegions with lock-free pre-allocated map-reduce pattern#46JulienBreux wants to merge 1 commit into
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…cated map-reduce pattern Optimize the concurrent multi-region listing operations (listAllRegions) for domainmappings, jobs, services, and workerpools. By replacing the sync.Mutex and shared append pattern with a lock-free slice of slices ([][]T), we eliminate mutex contention entirely and allow unhindered concurrency during region queries. Additionally, by counting the total collected slice items first and allocating the final slice with exact capacity before concatenation, we reduce slice resizing overhead and heap allocations by ~24.5% (as measured by BenchmarkListAllRegions). Co-authored-by: JulienBreux <964330+JulienBreux@users.noreply.github.com>
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💡 What
We optimized the multi-region list operations (
listAllRegions) acrossservice,domainmapping,job, andworkerpoolpackages by implementing a lock-free, pre-allocated map-reduce pattern.🎯 Why
In a terminal user interface (TUI) environment where "All Regions" queries are frequent, performing concurrent API requests using a shared slice protected by
sync.Mutexcaused contention on the lock, repetitive slice reallocation, and massive heap memory/garbage collection churn.📊 Impact
116,828 B/opto88,244 B/op).201,971 ns/opto185,491 ns/op).[][]Tand then concatenating safely at the end.🔬 Measurement
To verify this improvement:
go test -bench=BenchmarkListAllRegions -benchmem ./internal/run/api/service/...PR created automatically by Jules for task 3522803376670953305 started by @JulienBreux