feat(backend): API & Database Scaling Part 49 / Advanced Logic Part 39 (#294)#850
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Wilfred007 merged 5 commits intoMay 30, 2026
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- GET /api/v1/db-scaling/bgwriter-stats — pg_stat_bgwriter snapshot (checkpoint frequency, buffer write counts, I/O durations) - GET /api/v1/db-scaling/database-stats — pg_stat_database snapshot (txn throughput, cache hit ratio, deadlocks, temp file usage) - Add WebhookService with retry/backoff delivery and delivery log writes - Integration tests for both new db-scaling endpoints - OpenAPI spec updated
Gildado#294) - GET /api/v1/db-scaling/table-io-stats — pg_statio_user_tables snapshot (heap, index, TOAST block reads vs hits; heapCacheHitRatio computed) - GET /api/v1/db-scaling/index-usage-stats — pg_stat_user_indexes snapshot (idx_scan, idx_tup_read, idx_tup_fetch per index; ordered by scan count) - Both endpoints accept ?limit (default 30, max 100) with 400 validation - Integration tests: happy path, invalid-limit 400, service-throws 500
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- Remove unused imports: StellarWalletsKit, MapPin, screen, AxiosError - Remove unused eslint-disable directive in transactionHistoryApi test - Fix catch binding: catch (err) → catch in PayrollScheduleForm - Fix no-misused-promises: wrap async onSubmit in void handler - Fix prefer-const: let current → const in SchedulePreview - Remove unused xdr/nativeToScVal destructuring in useContractMetrics - Fix no-base-to-string: guard String(val) for object types - Remove unused SchedulingWizard import and handleScheduleComplete in PayrollScheduler - Fix JSX parse error: </main> → </div> in Settings - Remove dead useTheme/languageLoading code in Settings - Replace unsafe (error as any) casts with proper instanceof checks
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Summary
GET /api/v1/db-scaling/table-io-stats— per-table I/O snapshot frompg_statio_user_tablescovering heap, index, and TOAST block reads vs buffer-cache hits, with a computedheapCacheHitRatioto surface cache-cold tablesGET /api/v1/db-scaling/index-usage-stats— per-index access snapshot frompg_stat_user_indexesshowing scan count, rows read, and rows fetched; ordered by scan frequency to identify hot and unused indexes?limitquery param (default 30, max 100)Acceptance Criteria
limit, 500 vianext(err)on service failureCloses #739