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Add excel-export module: Apache POI 6.0.0 XSSF vs SXSSF under a fixed heap, 1,000,000 rows streamed with StreamingResponseBody, OpenCSV, sheet rolling, temp-file cleanup

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Co-Authored-By: Claude Sonnet 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_017ic4b4VQVEJWetTT1dYzyJ
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asmhatre
2026-10-29 06:18:42 +00:00
co-authored by Claude Sonnet 5.5
parent bded24d929
commit 9b1da079c6
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excel-export/output/06-sxssf-sweep.txt
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# SXSSF under the same 512 MB heap, same rows, plus 1,000,000
# openjdk version "25.0.5" 2026-10-20 LTS | 2 vCPU | 8027 MB RAM
# indicative numbers from a shared sandbox, one run per line; see README
SXSSF /export/sxssf?rows=10000 Xmx=512m http=200 curl=0 bytes=598239 10.6s | peak used heap 165 MB | max after GC 18 MB | 10 GC pauses, longest 57 ms | peak RSS 333 MB | temp dir peak 4 MB, files left 0 | OOM=no
SXSSF /export/sxssf?rows=25000 Xmx=512m http=200 curl=0 bytes=1490887 3.0s | peak used heap 211 MB | max after GC 18 MB | 11 GC pauses, longest 42 ms | peak RSS 366 MB | temp dir peak 11 MB, files left 0 | OOM=no
SXSSF /export/sxssf?rows=50000 Xmx=512m http=200 curl=0 bytes=2978433 6.5s | peak used heap 307 MB | max after GC 17 MB | 11 GC pauses, longest 82 ms | peak RSS 477 MB | temp dir peak 23 MB, files left 0 | OOM=no
SXSSF /export/sxssf?rows=100000 Xmx=512m http=200 curl=0 bytes=5954167 9.9s | peak used heap 306 MB | max after GC 22 MB | 12 GC pauses, longest 78 ms | peak RSS 484 MB | temp dir peak 46 MB, files left 0 | OOM=no
SXSSF /export/sxssf?rows=1000000 Xmx=512m http=200 curl=0 bytes=59408766 36.0s | peak used heap 321 MB | max after GC 19 MB | 29 GC pauses, longest 79 ms | peak RSS 504 MB | temp dir peak 475 MB, files left 0 | OOM=no