libplugin-pay: use map for channel hints (on top of #7494) #7648
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libplugin-pay: use map for channel hints (on top of #7494)
Description
This commit fixes a "FIXME: This is slow" in the pay plugin. For nodes with many channels this is a tremendous improvement in pay performance. PR #7611 improves payment performance from 15 seconds to 13.5 seconds on one of our nodes. This commit improves payment performance from 13.5 seconds to 5.7 seconds.
Changes Made
Checklist
Ensure the following tasks are completed before submitting the PR:
TODOs
have been addressed or removed.Additional Notes
This PR builds on top of #7494
This is a replacement of #7636, because that PR conflicts with #7494