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- Always apply LIMIT to SELECT/SHOW/DESCRIBE/EXPLAIN (was conditional) - Hard cap at 50,000 rows regardless of user settings - Fix rows_truncated detection to compare against capped_limit - Lower frontend virtualization threshold from 500 to 100 rows - Add truncation warning banner when results are capped Closes #25 Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
- Remove hardcoded 50k row cap - Add sysinfo crate for process memory monitoring - MemoryGuard checks RSS every 1000 rows during fetch - Triggers when process hits 75% of system RAM - Gracefully stops fetch and returns accumulated rows with warning - Add OutOfMemory error variant to CoreError - Update frontend to show backend warnings - Truncation banner no longer mentions arbitrary 50k number
- Collapse nested if into single condition (clippy::collapsible_if) - Use is_multiple_of(1000) instead of % 1000 == 0 (clippy::manual_is_multiple_of) - Run cargo fmt for consistent formatting
- Changed MemoryGuard to monitor available system memory, not total - Trigger threshold: 95% of available memory consumed (5% buffer) - Previous logic used 75% of total memory which could allow crashes when other processes consumed RAM - New logic prevents runaway queries when system memory is critically low - Removed per-process RSS tracking; now monitors system-wide availability Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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Summary
Replaces hardcoded 50k row limit with dynamic memory guard that monitors available system memory.
Changes
Refactored MemoryGuard (3 commits)
Key Implementation Details
ows_truncated\ flag on result with hint message
Frontend Virtualization
Testing
Risk Mitigation