Introduces a materialized cache table to store blocked issue IDs,
replacing the expensive recursive CTE computation that was causing
~752ms query times on 10K databases (bd-5qim).
The cache is maintained via invalidation on dependency and status
changes, reducing GetReadyWork from O(n²) recursive traversal to
O(1) cache lookup.
Technical details:
- New blocked_issues_cache table with single issue_id column
- ON DELETE CASCADE ensures automatic cleanup
- Migration populates cache using existing recursive CTE logic
- rebuildBlockedCache() fully rebuilds cache on invalidation
- execer interface allows both *sql.DB and *sql.Tx usage
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Force single connection for all in-memory databases (including file::memory:)
- Close rows before executing statements in external_ref migration
- Prevents connection pool deadlock with MaxOpenConns(1)
- Fixes test failures in syncbranch_test.go
The schema initialization was trying to create an index on the external_ref
column before the migration that adds the column runs. This caused 'no such
column: external_ref' errors when opening very old databases (pre-0.17.5).
Solution: Move the index creation into the migration that adds the column.
Fixes#284
Amp-Thread-ID: https://ampcode.com/threads/T-2744d5a7-168f-4ef6-bcab-926db846de20
Co-authored-by: Amp <amp@ampcode.com>
- Created migrations/ subdirectory with 14 individual migration files
- Reduced migrations.go from 680 to 98 lines (orchestration only)
- Updated test imports to use migrations package
- Updated MULTI_REPO_HYDRATION.md documentation
- All tests passing
