perf(mailbox): bound paging window (maxSize) and memoize per-row timestamp #216

Merged

JMR-dev merged 1 commits from perf-mailbox-list into main

2026-07-03 15:11:52 +00:00

Author	SHA1	Message	Date
JMR-devandClaude Opus 4.8	5cfd1b4065	perf(mailbox): bound paging window (maxSize) and memoize per-row timestamp Two fixes from the Paging 3 perf audit of the mailbox list (#212, #213): - Bound the unified-inbox paging window (#212): the only PagingConfig left maxSize at Int.MAX_VALUE, so pages were never evicted and a deep scroll accumulated the whole inbox in memory. Set maxSize = MAILBOX_PAGE_SIZE * 5 (200), satisfying maxSize >= pageSize + 2*prefetchDistance (120). Safe with enablePlaceholders = false (the UI null-guards evicted positions). - Memoize the per-row relative timestamp (#213): MessageRow formatted it via DateUtils.getRelativeTimeSpanString un-remembered, allocating a String on every recomposition. Wrapped in remember(timestampMillis). Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>	2026-07-03 09:56:08 -05:00

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JMR-devandClaude Opus 4.8

5cfd1b4065

perf(mailbox): bound paging window (maxSize) and memoize per-row timestamp

Two fixes from the Paging 3 perf audit of the mailbox list (#212, #213):

- Bound the unified-inbox paging window (#212): the only PagingConfig left
  maxSize at Int.MAX_VALUE, so pages were never evicted and a deep scroll
  accumulated the whole inbox in memory. Set maxSize = MAILBOX_PAGE_SIZE * 5
  (200), satisfying maxSize >= pageSize + 2*prefetchDistance (120). Safe with
  enablePlaceholders = false (the UI null-guards evicted positions).

- Memoize the per-row relative timestamp (#213): MessageRow formatted it via
  DateUtils.getRelativeTimeSpanString un-remembered, allocating a String on
  every recomposition. Wrapped in remember(timestampMillis).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

2026-07-03 09:56:08 -05:00