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Phase 2: Model Discovery is now complete with all 3 plans executed: - 02-01: Replicate provider - 02-02: fal.ai provider - 02-03: Model caching and unified API Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>handoff-20260429-1057
shrimbly
6 months ago
3 changed files with 159 additions and 16 deletions
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--- |
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phase: 02-model-discovery |
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plan: 03 |
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subsystem: api |
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tags: [caching, unified-api, model-discovery, providers] |
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# Dependency graph |
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requires: |
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- phase: 02-01 |
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provides: Replicate provider implementation |
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- phase: 02-02 |
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provides: fal.ai provider implementation |
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provides: |
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- In-memory model caching with TTL |
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- Unified /api/models endpoint for all providers |
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- Multi-provider helper functions (listAllModels, searchAllModels) |
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- Cache utilities (getCachedModels, setCachedModels, invalidateCache) |
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affects: [model-browser, generate-node, phase-3] |
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# Tech tracking |
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tech-stack: |
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added: [] |
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patterns: [in-memory caching with TTL, unified API aggregation, partial failure handling] |
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key-files: |
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created: |
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- src/lib/providers/cache.ts |
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- src/app/api/models/route.ts |
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modified: |
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- src/lib/providers/index.ts |
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key-decisions: |
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- "10-minute default cache TTL (configurable per call)" |
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- "Cache key format: {provider}:models or {provider}:search:{query}" |
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- "Unified API uses header-based auth (X-Replicate-Key, X-Fal-Key)" |
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- "fal.ai always included in unified response (works without key)" |
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- "Partial failures return successful providers with errors array" |
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patterns-established: |
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- "Cache utilities exported from @/lib/providers for reuse" |
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- "Unified API endpoint pattern at /api/models" |
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- "Multi-provider aggregation with Promise.allSettled" |
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issues-created: [] |
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# Metrics |
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duration: 5min |
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completed: 2026-01-09 |
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--- |
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# Phase 02-03: Model Caching and Unified API Summary |
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**In-memory caching layer and unified /api/models endpoint aggregating Replicate and fal.ai models** |
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## Performance |
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- **Duration:** 5 min |
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- **Started:** 2026-01-09 |
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- **Completed:** 2026-01-09 |
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- **Tasks:** 3 |
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- **Files created:** 2 |
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- **Files modified:** 1 |
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## Accomplishments |
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- Created in-memory cache utility with 10-minute TTL for model lists |
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- Built unified /api/models endpoint aggregating all configured providers |
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- Added cache utilities export from provider index |
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- Implemented listAllModels and searchAllModels helper functions |
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- Partial failure handling - returns models from successful providers with errors array |
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## Task Commits |
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Each task was committed atomically: |
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1. **Task 1: Create model caching utility** - `83ef0b4` (feat) |
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2. **Task 2: Create unified models API endpoint** - `421620c` (feat) |
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3. **Task 3: Add provider module exports** - `91a5449` (feat) |
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## Files Created/Modified |
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- `src/lib/providers/cache.ts` - In-memory cache with get/set/invalidate and TTL support |
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- `src/app/api/models/route.ts` - Unified API aggregating Replicate and fal.ai models |
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- `src/lib/providers/index.ts` - Added cache exports and multi-provider helper functions |
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## API Reference |
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### GET /api/models |
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**Query Parameters:** |
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- `provider`: Optional, filter to "replicate" or "fal" |
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- `search`: Optional, search query |
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- `refresh`: Optional, set to "true" to bypass cache |
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**Headers:** |
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- `X-Replicate-Key`: Replicate API key |
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- `X-Fal-Key`: fal.ai API key (optional) |
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**Response:** |
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```json |
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{ |
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"success": true, |
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"models": [...], |
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"cached": false, |
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"providers": { |
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"replicate": { "success": true, "count": 50, "cached": false }, |
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"fal": { "success": true, "count": 100, "cached": true } |
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}, |
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"errors": [] |
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} |
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``` |
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## Decisions Made |
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- Cache uses simple in-memory Map (no LRU, no persistence) |
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- Default TTL is 10 minutes - balance between freshness and API quota |
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- Cache key includes search query for separate caching of search results |
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- fal.ai always included in unified results (works without API key) |
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- Unified API returns sorted models (by provider, then name) |
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## Deviations from Plan |
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None - plan executed exactly as written. |
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## Issues Encountered |
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None. |
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## Phase 2 Complete |
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This plan completes Phase 2: Model Discovery. All three plans are now done: |
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1. **02-01**: Replicate provider with model fetching |
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2. **02-02**: fal.ai provider with model fetching |
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3. **02-03**: Model caching and unified API |
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The model discovery infrastructure is ready for Phase 3: Generate Node Refactor. |
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--- |
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*Phase: 02-model-discovery* |
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*Completed: 2026-01-09* |
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