perf: introduce windowed message storage API - #554
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The primary key on arrived_at alone was globally unique, so REPLACE in store_message could silently delete a message with the same timestamp in another channel. The composite key matches the semantics of MessageId and serves as the index for windowed message queries. Also link messages to their channel via a foreign key (deleting a channel deletes its messages), and remove Storage::message_channel, which is ambiguous under the composite key.
The app was not starting with: `Error: The cursor position could not be read within a normal duration.` The problem was most likely twofold: first `cargo install --path .` ignored the lockfile. Further ratatui was upgraded and now probes the terminal in `terminal.clear` which was blocked by already started event stream. This commit upgrades ratatui and corresponding dependencies, and open event reading *after* clearing the screen.
boxdot
marked this pull request as draft
June 15, 2026 08:54
boxdot
changed the title
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Messages were held in an in-memory cache (MemCache) over the storage
backend, loading a channel's whole history into memory. Replace it with
a windowed API: the app requests a bounded window around the selection
and refills it every frame, so memory usage is constant regardless of
channel size.
This significantly improves the memory usage and start up time of the app.