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perf(mobile): parse each event's thread reference once - #9460
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parseThreadReference ran a 64-character hex regex over every e tag each time anything asked an event for its parent or root, and the channel store asks many times per event: trimming the reply overlay on every live event, and reconciling a fetched page, which rebuilt the whole cached reply set once per row. Keep the parsed reference per tag list in an Expando, and index cached replies by root once per page reconcile. Co-authored-by: studio <dc2fc481343672df31a689840c09299972e704dac592e0da6f18486646a7ee3e@buzz.block.builderlab.xyz> Signed-off-by: Tom Brow <[email protected]>
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November 13, 2026 20:31
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Kyle reviewed this PR and the Nexus review-tracker notes and approved with no comments.
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* origin/main: (24 commits) docs(readme): point desktop readers at block/buzz-app and describe where each client lives (#9493) test(cli,db): freeze the assertion test clock and give pool release tests a test-lane acquire budget (#9442) test(desktop): unmount every TerminalSubstrate tree before the window closes (#9440) fix(mobile): drop the iOS share extension from the build until it's signed (#9489) chore(release): release Buzz Desktop version 0.5.30 (#9491) perf(mobile): parse each event's thread reference once (#9460) perf(mobile): load only the directory when search opens (#9466) perf(mobile): stop rebuilding Home's channel list when a route covers it (#9459) perf(mobile): ask typing subscriptions only for the typing window (#9454) perf(mobile): skip avatar URL parsing for non-HTTP URLs (#9448) perf(mobile): download the identity archive list only when it changed (#9445) perf(mobile): don't treat a Control Center pull as a resume (#9443) fix(mobile): keep a superseded roster read out of the offline snapshot (#9452) perf(mobile): read channel bot roles from the member list (#9451) perf(mobile): read Activity once per reconnect (#9455) fix(mobile): offer role controls for agents (#9475) perf(mobile): stop rebuilding the native nav bar on every scrolled frame (#9458) perf(mobile): keep verified-name batches open as people are added (#9450) perf(mobile): read only changed custom emoji sets on reconnect (#9446) perf(mobile): keep latest-message times on a directory load (#9457) ... Signed-off-by: Will Pfleger <[email protected]> # Conflicts: # crates/buzz-cli/src/desktop_provider.rs
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…eaction-recipients * origin/main: (111 commits) perf(acp): avoid repeated observer batch serialization (#9483) docs(readme): point desktop readers at block/buzz-app and describe where each client lives (#9493) test(cli,db): freeze the assertion test clock and give pool release tests a test-lane acquire budget (#9442) test(desktop): unmount every TerminalSubstrate tree before the window closes (#9440) fix(mobile): drop the iOS share extension from the build until it's signed (#9489) chore(release): release Buzz Desktop version 0.5.30 (#9491) perf(mobile): parse each event's thread reference once (#9460) perf(mobile): load only the directory when search opens (#9466) perf(mobile): stop rebuilding Home's channel list when a route covers it (#9459) perf(mobile): ask typing subscriptions only for the typing window (#9454) perf(mobile): skip avatar URL parsing for non-HTTP URLs (#9448) perf(mobile): download the identity archive list only when it changed (#9445) perf(mobile): don't treat a Control Center pull as a resume (#9443) fix(mobile): keep a superseded roster read out of the offline snapshot (#9452) perf(mobile): read channel bot roles from the member list (#9451) perf(mobile): read Activity once per reconnect (#9455) fix(mobile): offer role controls for agents (#9475) perf(mobile): stop rebuilding the native nav bar on every scrolled frame (#9458) perf(mobile): keep verified-name batches open as people are added (#9450) perf(mobile): read only changed custom emoji sets on reconnect (#9446) ... Signed-off-by: Matthew Boston <[email protected]>
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Every time code asked an event for its parent or thread root (
threadReference,parentEventId),parseThreadReferencewalked its tags again and ran a 64-character hex regex over eachetag. The channel store asks that many times per event:_trimReplyOverlayruns on every live event merged into the window and re-parsed every overlay event, twice._reconcilePageSummariescalledcachedThreadReplyIds(root)once per row of a fetched page, and each call re-parsed every cached reply (twice per reply) to find that root's replies. A 200-row page did 200 full passes.Now:
parseThreadReferencekeeps its result per tag list in anExpando. Event tags are never changed after an event is built (nothing inlibmutates aNostrEvent's tags), so the cached value always matches._reconcilePageSummariesindexes cached replies by root once, then reads each row's count from that map.cachedThreadReplyIdskeeps its signature and result and shares the same code.Validation
Full mobile test suite and
flutter analyzepass. Existing thread-summary, reply-overlay and thread-reference tests cover the unchanged results.On the iPhone 12 mini (profile build, Builderlab), same scripted run on
mainand on this branch: open three threads from Activity, back out after each.The threads opened and showed the same replies in both runs, and the run covered a channel window load, live events arriving while a thread was open, and backing out to Home.
Regressions
None expected. Results are identical; the cache holds one small record per live tag list and is released with the event.