Warm rebuilds of virtual repos (member caches valid, virtual TTL expired)
previously re-parsed all member index.yaml files on every rebuild. With 19
Helm members totalling 14 MB, YAML parsing was 60% of merge time (~6.3s of
~9.6s). Parsing each member's YAML also produces msgpack and stores it in S3
alongside the raw index. Subsequent rebuilds load the compact msgpack and skip
YAML parsing entirely.
Before: warm rebuild ~9.6s (CSafeLoader baseline)
After: warm rebuild ~5.9s (38% faster, merge=4.7s down from ~9.6s)
unkinben
1e0f4dc840