perf: avoid heap allocation for getting connections

[ahabhgk]

Summary

avoid heap allocation for getting connections

Checklist

• Tests updated (or not required).
• Documentation updated (or not required).

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[ahabhgk]

!bench

[rspack-bot]

📝 Benchmark detail: Open

Name	Base (2024-12-04 044e8e3)	Current	Change
10000_big_production-mode_disable-minimize + exec	42.6 s ± 1.25 s	36.3 s ± 112 ms	-14.60 %
10000_development-mode + exec	1.83 s ± 47 ms	1.78 s ± 37 ms	-2.94 %
10000_development-mode_hmr + exec	647 ms ± 3.9 ms	638 ms ± 15 ms	-1.37 %
10000_production-mode + exec	2.41 s ± 41 ms	2.35 s ± 65 ms	-2.64 %
arco-pro_development-mode + exec	1.75 s ± 70 ms	1.73 s ± 89 ms	-1.41 %
arco-pro_development-mode_hmr + exec	426 ms ± 2 ms	424 ms ± 1.2 ms	-0.48 %
arco-pro_production-mode + exec	3.1 s ± 71 ms	3.15 s ± 57 ms	+1.34 %
arco-pro_production-mode_generate-package-json-webpack-plugin + exec	3.13 s ± 77 ms	3.21 s ± 130 ms	+2.39 %
threejs_development-mode_10x + exec	1.63 s ± 20 ms	1.65 s ± 34 ms	+1.12 %
threejs_development-mode_10x_hmr + exec	807 ms ± 11 ms	798 ms ± 11 ms	-1.16 %
threejs_production-mode_10x + exec	4.91 s ± 26 ms	4.9 s ± 23 ms	-0.04 %
10000_big_production-mode_disable-minimize + rss memory	13449 MiB ± 447 MiB	10316 MiB ± 57.3 MiB	-23.29 %
10000_development-mode + rss memory	784 MiB ± 25.4 MiB	774 MiB ± 16.5 MiB	-1.25 %
10000_development-mode_hmr + rss memory	1896 MiB ± 541 MiB	1980 MiB ± 489 MiB	+4.42 %
10000_production-mode + rss memory	663 MiB ± 27.2 MiB	661 MiB ± 39.4 MiB	-0.34 %
arco-pro_development-mode + rss memory	731 MiB ± 34.9 MiB	712 MiB ± 40.2 MiB	-2.61 %
arco-pro_development-mode_hmr + rss memory	926 MiB ± 68.8 MiB	885 MiB ± 107 MiB	-4.48 %
arco-pro_production-mode + rss memory	834 MiB ± 35.9 MiB	810 MiB ± 35.8 MiB	-2.92 %
arco-pro_production-mode_generate-package-json-webpack-plugin + rss memory	879 MiB ± 37.5 MiB	836 MiB ± 46.1 MiB	-4.85 %
threejs_development-mode_10x + rss memory	823 MiB ± 46.7 MiB	780 MiB ± 49.3 MiB	-5.24 %
threejs_development-mode_10x_hmr + rss memory	2147 MiB ± 152 MiB	1801 MiB ± 237 MiB	-16.13 %
threejs_production-mode_10x + rss memory	1034 MiB ± 53.5 MiB	1088 MiB ± 56 MiB	+5.27 %

[JSerFeng]

For real ?

I didn't realize clone costs that much

[chenjiahan]

@JSerFeng I think it's related to #8620 and #8602