The live snapshot is replaced under its readers, not locked against them
09:03 pm AWST · b21d7d9
Vercel's 5xx spike on /dealer/[slug] at 12:35 UTC: depth-boards held an exclusive lock on live_snapshot for its whole twenty-minute run, twice a day, and every dealer render inside the window waited eight seconds and threw. The refresh now deletes and re-inserts under MVCC, the job's lock list drops live_snapshot, and the dealer page's market comparison reads tolerantly. DQ 57.