Simplified implementation:
- OptimizationMetrics: tracks compression per-compressor, provides ratio calculation
- optimize_record_with_metrics(): synchronous helper for rebuild loop
- CompressorStats: per-type breakdown (count, bytes)
Design: Call optimize_record_with_metrics() in rebuild.rs embedding loop:
for record in source.records() {
let optimized = optimize_record_with_metrics(record, &optimizer, &metrics)?;
embed_and_index(&optimized)?;
}
5 unit tests (all passing):
- test_optimize_record_preserves_structure
- test_optimize_record_tracks_bytes
- test_optimize_record_disabled
- test_compression_ratio_calculation
- test_metrics_aggregation
mem-core + mem-ingest build cleanly (mem-cli has pre-existing issues unrelated to M3.8)
Total M3.8 progress:
- M3.8.1: ✅ 62 tests, core compressor modules
- M3.8.2: ✅ 5 tests, ingest integration helper functions
- M3.8.3: ⏳ Metrics & monitoring (next)
- M3.8.4: ⏳ Query cleanup (remove PromptBuilder optimizer)
- M3.8.5: ⏳ Benchmarks
- M3.8.6: ⏳ Gate